Text preview for : en_4j2_1f.pdf part of Daewoo Nubira/Lacetti Also known as: Chevrolet Nubira / Lacetti, Chevrolet Optra Optra5, Suzuki Forenza Reno Covers the 1.4L, 1.6L and 1.8L engine. Year 2004



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SECTION : 1F

ENGINE CONTROLS
CAUTION : Disconnect the negative battery cable before removing or installing any electrical unit o r w hen a tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless otherwise noted.

TABLE OF CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 1F6 Engine Data Display Tables . . . . . . . . . . . . . . . . . 1F6 Engine Data Display Table Definitions . . . . . . . . 1F7 Fastener Tightening Specifications . . . . . . . . . 1F10 Fuel System Specifications . . . . . . . . . . . . . . . . . 1F11 Temperature Vs Resistance . . . . . . . . . . . . . . . . 1F11 SCHEMATIC AND ROUTING DIAGRAMS . . . . 1F12 ECM Wiring Diagram (1.4L/1.6L DOHC 1 OF 6) . . . . . . . . . . . . . . 1F12 ECM Wiring Diagram (1.4L/1.6L DOHC 2 OF 6) . . . . . . . . . . . . . . 1F13 ECM Wiring Diagram (1.4L/1.6L DOHC 3 OF 6) . . . . . . . . . . . . . . 1F14 ECM Wiring Diagram (1.4L/1.6L DOHC 4 OF 6) . . . . . . . . . . . . . . 1F15 ECM Wiring Diagram (1.4L/1.6L DOHC 5 OF 6) . . . . . . . . . . . . . . 1F16 ECM Wiring Diagram (1.4L/1.6L DOHC 6 OF 6) . . . . . . . . . . . . . . 1F17 ECM Wiring Diagram (1.8L DOHC 1 OF 6) . 1F18 ECM Wiring Diagram (1.8L DOHC 2 OF 6) . 1F19 ECM Wiring Diagram (1.8L DOHC 3 OF 6) . 1F20 ECM Wiring Diagram (1.8L DOHC 4 OF 6) . 1F21 ECM Wiring Diagram (1.8L DOHC 5 OF 6) . 1F22 ECM Wiring Diagram (1.8L DOHC 6 OF 6) . 1F23 Connector End View . . . . . . . . . . . . . . . . . . . . . . 1F24 COMPONENT LOCATOR . . . . . . . . . . . . . . . . . . . 1F28 Component Locator (1.4L/1.6L DOHC) . . . . . . 1F28 Component Locator (1.8L DOHC) . . . . . . . . . . . 1F29 DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F30 SYSTEM DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . 1F30 Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F30 Idle Learn Procedure . . . . . . . . . . . . . . . . . . . . . . 1F30 TEC (Tooth Error Correction) Learn Procedure 1F31 ONBoard Diagnostic (EOBD) System Check (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . 1F32 ONBoard Diagnostic (EOBD) System Check (1.8L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F34 Multiple ECM Informationn Sensor Dtcs Set . . 1F36 Engine Cranks But Will Not Run (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . 1F40 Engine Cranks But Will Not Run (1.8L DOHC) 1F47 No Malfunction Indicator Lamp ( 1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . 1F54 No Malfunction Indicator Lamp (1.8L DOHC) . 1F56 Malfunction Indicator Lamp On Steady (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F58 Malfunction Indicator Lamp On Steady (1.8L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F60 Fuel System Diagnosis . . . . . . . . . . . . . . . . . . . . 1F62 Fuel Pump Relay Circuit Check (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . 1F65 Fuel Pump Relay Circuit Check (1.8L DOHC) . 1F68 Main Relay Circuit Check (1.4L/1.6L DOHC) . 1F71 Main Relay Circuit Check (1.8L DOHC) . . . . . . 1F73 Manifold Absolute Pressure Check (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . 1F75 Manifold Absolute Pressure Check (1.8L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F77 Idle Air Control System Check (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . 1F79 Idle Air Control System Check (1.8L DOHC) . . 1F82 Ignition System Check (1.4L/1.6L DOHC) . . . . 1F85 Ignition System Check (1.8L DOHC) . . . . . . . . 1F88 Engine Cooling Fan Circuit Check Dual Fan (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . 1F93 Engine Cooling Fan Circuit Check Dual Fan (1.8L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F100 Data Link Connector Diagnosis (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . 1F106 Data Link Connector Diagnosis (1.8L DOHC) 1F108 Fuel Injector Balance Test . . . . . . . . . . . . . . . . 1F110

1F 2IENGINE CONTROLS
TROUBLE CODE DIAGNOSIS (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . 1F111 Clearing Trouble Codes . . . . . . . . . . . . . . . . . . . . 1F111 Diagnostic Trouble Codes (1.4L/1.6L DOHC) . 1F111 DTC P0107 Manifold Absolute Pressure Sensor Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F114 DTC P0108 Manifold Absolute Pressure Sensor High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 1F117 DTC P0112 Intake Air Temperature Sensor Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F120 DTC P0113 Intake Air Temperature Sensor High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F122 DTC P0117 Engine Coolant Temperature Sensor Low Voltage . . . . . . . . . . . . . . . . . . . . 1F125 DTC P0118 Engine Coolant Temperature Sensor High Voltage . . . . . . . . . . . . . . . . . . . . 1F128 DTC P0122 Throttle Position Sensor Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F131 DTC P0123 Throttle Position Sensor High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F134 DTC P0131 Front Heated Oxygen Sensor Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F137 DTC P0132 Front Heated Oxygen Sensor High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F140 DTC P0133 Front Heated Oxygen Sensor No Activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F142 DTC P0135 Front Heated Oxygen Sensor Heater Circuit Not Functioning . . . . . . . . . . . . . . . . . . 1F145 DTC P0137 Rear Heated Oxygen Sensor Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F148 DTC P0138 Rear Heated Oxygen Sensor High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F151 DTC P0140 Rear Heated Oxygen Sensor No Activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F153 DTC P0141 Rear Heated Oxygen Sensor Heater Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F156 DTC P0171 Fuel Trim System Too Lean . . . . 1F158 DTC P0172 Fuel Trim System Too Rich . . . . . 1F162 DTC P0222 Main Throttle Idle Actuator (MTIA) Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F165 DTC P0223 Main Throttle Idle Actuator (MTIA) High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 1F168 DTC P0261 Injector 1 Low Voltage . . . . . . . . . 1F171 DTC P0262 Injector 1 High Voltage . . . . . . . . 1F173 DTC P0264 Injector 2 Low Voltage . . . . . . . . . 1F175 DTC P0265 Injector 2 High Voltage . . . . . . . . 1F177 DTC P0267 Injector 3 Low Voltage . . . . . . . . . 1F179 DTC P0268 Injector 3 High Voltage . . . . . . . . 1F181 DTC P0270 Injector 4 Low Voltage . . . . . . . . . 1F183 DTC P0271 Injector 4 High Voltage . . . . . . . . 1F185 DTC P0300 Multiple Cylinder Misfire(Catalyst Damage) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F188 DTC P0300 Multiple Cylinder Misfire(Increase Emission) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F192 DTC P0327 Knock Sensor Circuit Fault (1.4L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F195 DTC P0327 Knock Sensor Circuit Fault (1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F198 DTC P0335 Magnetic Crankshaft Position Sensor Electrical Error . . . . . . . . . . . . . . . . . . 1F201 DTC P0336 58X Crankshaft Position Sensor No Plausible Signal . . . . . . . . . . . . . . . . . . . . 1F204 DTC P0337 58X Crankshaft Position Sensor No Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F207 DTC P0341 Camshaft Position Sensor Rationality . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F210 DTC P0342 Camshaft Position Sensor Signal 1F212 DTC P0351 Ignition Signal Coil A Fault . . . . . 1F214 DTC P0352 Ignition Signal Coil B Fault . . . . . 1F216 DTC P0400 Exhaust Gas Recirculation Out Of Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F218 DTC P0404 Exhaust Gas Recirculation Opened . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F221 DTC P0405 EGR Pintle Position Sensor Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F224 DTC P0406 EGR Pintle Position Sensor High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F227 DTC P0420 Catalyst Low Efficiency . . . . . . . . 1F230 DTC P0444 EVAP Purge Control Circuit No Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F232 DTC P0445 EVAP Purge Control Circuit Fault 1F235 DTC P0462 Fuel Level Sensor Low Voltage (1.6L DOHC Only) . . . . . . . . . . . . . . . . . . . . . 1F238 DTC P0463 Fuel Level Sensor High Voltage (1.6L DOHC Only) . . . . . . . . . . . . . . . . . . . . . 1F241 DTC P0480 Low Speed Cooling Fan Relay Circuit Fault (1.4L DOHC) . . . . . . . . . . . . . . . 1F245 DTC P0480 Low Speed Cooling Fan Relay Circuit Fault (1.6L DOHC) . . . . . . . . . . . . . . . 1F248 DTC P0481 High Speed Cooling Fan Relay Circuit Fault (1.4L DOHC) . . . . . . . . . . . . . . . 1F251 DTC P0481 High Speed Cooling Fan Relay Circuit Fault (1.6L DOHC) . . . . . . . . . . . . . . . 1F254 DTC P0501 Vehicle Speed No Signal (M/T Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F257 DTC P0510 Throttle Position Switch Circuit Fault (1.4L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F260 DTC P0510 Throttle Position Switch Circuit Fault (1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . 1F262 DTC P0532 A/C Pressure Sensor Low Voltage1F264 DTC P0533 A/C Pressure Sensor High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F267
DAEWOO V121 BL4

ENGINE CONTROLS 1F 3
DTC P0562 System Voltage(Engine Side) Too Low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F270 DTC P0563 System Voltage(Engine Side) Too High . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F272 DTC P0601 Engine Control Module Checksum Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F274 DTC P0604 Engine Control Module Internal/External RAM Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F275 DTC P0605 Engine Control Module INMVY Write Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F276 DTC P0656 Fuel Level Gauge Circuit Fault . . 1F277 DTC P1181 Variable Intake Manifold Solenoid Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F279 DTC P1182 Variable Intake Manifold Solenoid High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 1F281 DTC P1230 Fuel Pump Relay Low Voltage (1.4L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F283 DTC P1230 Fuel Pump Relay Low Voltage (1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F286 DTC P1231 Fuel Pump Relay High Voltage (1.4L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F289 DTC P1231 Fuel Pump Relay High Voltage (1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F292 DTC P1320 Crankshaft Segment Period Segment Adaptation At Limit . . . . . . . . . . . . 1F295 DTC P1321 Crankshaft Segment Period Tooth Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F297 DTC P1382 Rough Road Data Invalid (NON ABS) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F299 DTC P1382 Rough Road Data Invalid (ABS) 1F302 DTC P1385 Rough Road Sensor Circuit Fault (NON ABS) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F305 DTC P1402 Exhaust Gas Recirculation Blocked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F308 DTC P1403 Exhaust Gas Recirculation Valve Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F310 DTC P1404 Exhaust Gas Recirculation Closed1F313 DTC P1511 Idle Charge Actuator Circuit Fault 1F316 DTC P1512 Idle Charge Actuator Mechanical Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F319 DTC P1513 Idle Charge Actuator Functional Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F321 DTC P1537 A/C Compressor Relay High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F324 DTC P1538 A/C Compressor Relay Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F326 DTC P1610 Main Relay High Voltage (1.4L DOCH) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F328 DTC P1610 Main Relay High Voltage (1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F330 DTC P1611 Main Relay Low Voltage (1.4L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F332
DAEWOO V121 BL4

DTC P1611 Main Relay Low Voltage (1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F334 DTC P1628 Immobilizer No Successful Communication . . . . . . . . . . . . . . . . . . . . . . . . 1F336 DTC P1629 Immobilizer Wrong Computation 1F338 DTC P1660 Malfunction Indicator Lamp (MIL) High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 1F340 DTC P1661 Malfunction Indicator Lamp (MIL) Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F342 TROUBLE CODE DIAGNOSIS (1.8L DOHC) . 1F344 Clearing Trouble Codes . . . . . . . . . . . . . . . . . . . 1F344 Diagnostic Trouble Codes (1.8L DOHC) . . . . 1F344 DTC P0106 Manifold Absolute Pressure Rationality . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F347 DTC P0107 Manifold Absolut Pressure Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F349 DTC P0108 Manifold Absolut Pressure High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F352 DTC P0112 Intake Air Temperature Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F355 DTC P0113 Intake Air Temperature High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F358 DTC P0117 Engine Coolant Temperature Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F361 DTC P0118 Engine Coolant Temperature High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F363 DTC P0122 Throttle Position Sensor Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F366 DTC P0123 Throttle Position Sensor High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F369 DTC P0131 Front Heated Oxygen Sensor (HO2S1) Low Voltage . . . . . . . . . . . . . . . . . . 1F372 DTC P0132 Front Heated Oxygen Sensor (HO2S1) High Voltage . . . . . . . . . . . . . . . . . . 1F375 DTC P0133 Front Heated Oxygen Sensor (HO2S1) Slow Response . . . . . . . . . . . . . . . 1F378 DTC P0134 Front Heated Oxygen Sensor (HO2S1) No Activity or Open . . . . . . . . . . . . 1F382 DTC P0135 Front Heated Oxygen Sensor (HO2S1) Heater Circuit Not Functioning . . . 1F385 DTC P0137 Rear Heated Oxygen Sensor (HO2S2) Low Voltage . . . . . . . . . . . . . . . . . . 1F388 DTC P0138 Rear Heated Oxygen Sensor (HO2S2) High Voltage . . . . . . . . . . . . . . . . . . 1F391 DTC P0140 Rear Heated Oxygen Sensor (HO2S2) No Activity or Open . . . . . . . . . . . . 1F394 DTC P0141 Rear Heated Oxygen Sensor (HO2S2) Heater Circuit Not Functioning . . . 1F397 DTC P0171 Fuel Trim System Too Lean . . . . 1F400 DTC P0172 Fuel Trim System Too Rich . . . . . 1F404 DTC P0201 Injector 1 Circuit Fault . . . . . . . . . 1F408 DTC P0202 Injector 2 Circuit Fault . . . . . . . . . 1F411

1F 4IENGINE CONTROLS
DTC P0203 Injector 3 Circuit Fault . . . . . . . . . 1F414 DTC P0204 Injector 4 Circuit Fault . . . . . . . . . 1F417 DTC P0300 Multiple Cylinder Misfire Detected 1F421 DTC P0301 Cylinder 1 Misfire . . . . . . . . . . . . . 1F426 DTC P0302 Cylinder 2 Misfire . . . . . . . . . . . . . 1F431 DTC P0303 Cylinder 3 Misfire . . . . . . . . . . . . . 1F436 DTC P0304 Cylinder 4 Misfire . . . . . . . . . . . . . 1F441 DTC P0317 Rough Road Sensor Source Not Detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F445 DTC P0325 Knock Sensor Internal Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F447 DTC P0327 Knock Sensor Circuit Fault . . . . . 1F449 DTC P0336 58X Crank Position Extra/Missing Pulses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F452 DTC P0337 58X Crank Position Sensor No Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F455 DTC P0341 Camshaft Position Sensor Rationality . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F458 DTC P0342 Camshaft Position Sensor No Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F461 DTC P0351 Ignition Control Circuit A Fault (Cylinder 1 and 4) . . . . . . . . . . . . . . . . . . . . . . 1F464 DTC P0352 Ignition Control Circuit B Fault (Cylinder 2 and 3) . . . . . . . . . . . . . . . . . . . . . . 1F466 DTC P0401 Exhaust Gas Recirculation Insufficient Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F468 DTC P0402 Exhaust Gas Recirculation Excessive Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F470 DTC P0404 Exhaust Gas Recirculation Open Valve Position Error . . . . . . . . . . . . . . . . . . . . 1F474 DTC P0405 Exhaust Gas Recirculation Pintle Position Low Voltage . . . . . . . . . . . . . . . . . . . 1F478 DTC P0406 Exhaust Gas Recirculation Pintle Position High Voltage . . . . . . . . . . . . . . . . . . . 1F481 DTC P0420 Catalyst Oxygen Sensor Low Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F484 DTC P0443 Evaporative Emission System Purge Solenoid Control Circuit . . . . . . . . . . . . . . . . . 1F486 DTC P0461 Fuel Level Struck . . . . . . . . . . . . . 1F489 DTC P0462 Fuel Level Low Voltage . . . . . . . . 1F492 DTC P0463 Fuel Level High Voltage . . . . . . . 1F495 DTC P0502 Vehicle Speed Sensor No Signal (Engine Side) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F498 DTC P0506 Idle Speed RPM Lower Than Desired Idle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F501 DTC P0507 Idle Speed RPM Higher Than Desired Idle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F504 DTC P0532 A/C Pressure Sensor Low Voltage1F507 DTC P0533 A/C Pressure Sensor High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F510 DTC P0562 System Voltage Too Low (Engine Side) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F513 DTC P0563 System Voltage Too High (Engine Side) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F515 DTC P0601 ECM Checksum Fault (Engine Side) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F517 DTC P0602 ECM Reprogrom Error . . . . . . . . 1F518 DTC P0607 Lower Power Counter Error . . . . 1F519 DTC P0700 Transaxle Control Module Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F520 DTC P1106 Manifold Abosolute Pressure Intermittent High Voltage . . . . . . . . . . . . . . . . 1F522 DTC P1107 Manifold Abosolute Pressure Intermittent Low Voltage . . . . . . . . . . . . . . . . 1F524 DTC P1111 Intake Air Temperature Intermittent High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 1F526 DTC P1112 Intake Air Temperature Intermittent Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F529 DTC P1114 Engine Coolant Temperature Intermittent Low Voltage . . . . . . . . . . . . . . . . 1F531 DTC P1115 Engine Coolant Temperature Intermittent High Voltage . . . . . . . . . . . . . . . . 1F533 DTC P1121 Throttle Position Sensor Intermittent High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 1F535 DTC P1122 Throttle Position Sensor Intermittent Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F537 DTC P1133 Front Heated Oxyzen Sensor (HO2S1) Too Few Transitions . . . . . . . . . . . 1F539 DTC P1134 Front Heated Oxyzen Sensor (HO2S1) Transitions Ratio . . . . . . . . . . . . . . 1F543 DTC P1167 Front Heated Oxyzen Sensor (HO2S1) Rich in Decel Fuel Cutoff (DFCO) 1F546 DTC P1171 Fuel Trim System Lean During Power Enrichment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F548 DTC P1336 58X Crank Position Tooth Error Not Learned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F550 DTC P1391 G Sensor Rough Road Rationality 1F552 DTC P1392 G Sensor Rough Low Voltage . . 1F555 DTC P1393 G Sensor Rough High Voltage . . 1F558 DTC P1396 ABS WSS Signal Variation . . . . . 1F561 DTC P1397 ABS WSS No Signal . . . . . . . . . . 1F563 DTC P1404 Exhaust Gas Recirculation Closed Valve Pintle Error . . . . . . . . . . . . . . . . . . . . . . 1F565 DTC P1601 SPI Communications Between ECM and TCM . . . . . . . . . . . . . . . . . . . . . . . . 1F568 DTC P1607 Lower Power Counter Reset . . . 1F569 DTC P1626 Immobilizer No Response . . . . . . 1F570 DTC P1631 Immobilizer Invalid Response . . 1F571 DTC P1650 SPI Communications Between Error with SIDM Chip . . . . . . . . . . . . . . . . . . . . . . . . 1F572 DTC P1655 SPI Communications Between Error with PSVI Chip . . . . . . . . . . . . . . . . . . . . . . . . 1F573
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ENGINE CONTROLS 1F 5
SYMPTOM DIAGNOSIS . . . . . . . . . . . . . . . . . . . 1F574 Important Preliminary Checks . . . . . . . . . . . . . 1F574 Intermittents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F574 Hard Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F576 Surges or Chuggles . . . . . . . . . . . . . . . . . . . . . . 1F579 Lack of Power, Sluggishness, or Sponginess 1F581 Hesitation, Sag, Stumble . . . . . . . . . . . . . . . . . 1F583 Cuts Out, Misses . . . . . . . . . . . . . . . . . . . . . . . . 1F584 Poor Fuel Economy . . . . . . . . . . . . . . . . . . . . . . 1F587 Rough, Unstable, or Incorrect Idle, Stalling . . 1F588 Excessive Exhaust Emissions or Odors . . . . . 1F591 Dieseling, RunOn . . . . . . . . . . . . . . . . . . . . . . . 1F592 Backfire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F593 MAINTENANCE AND REPAIR . . . . . . . . . . . . . 1F594 ONVEHICLE SERVICE . . . . . . . . . . . . . . . . . . . 1F594 Fuel System Pressure Relief . . . . . . . . . . . . . . 1F594 Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F594 Fuel Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F596 Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F597 Fuel Rail and Injectors (1.4L/1.6L DOHC) . . . 1F598 Fuel Rail and Injectors (1.8L DOHC) . . . . . . . 1F600 Engine Coolant Temperature Sensor (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . 1F602 Engine Coolant Temperature Sensor (1.8L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F602 Throttle Position Sensor (1.8L DOHC) . . . . . . 1F603 Throttle Body (1.4L/1.6L DOHC) . . . . . . . . . . . 1F603 Throttle Body (1.8L DOHC) . . . . . . . . . . . . . . . 1F604 Front Heated Oxygen Sensor (HO2S 1) (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . 1F606 Front Heated Oxygen Sensor (HO2S 1) (1.8L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F607 Rear Heated Oxygen Sensor (HO2S 2) . . . . . 1F607 Intake Air Temperature Sensor (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . 1F608 Intake Air Temperature Sensor (1.8L DOHC) 1F609 Idle Air Control Valve (1.8L DOHC) . . . . . . . . . 1F609 Manifold Absolute Pressure Sensor (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . 1F610 Manifold Absolute Pressure Sensor (1.8L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F611 Exhaust Gas Recirculation Valve (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . 1F611 Exhaust Gas Recirculation Valve (1.8L DOHC)1F612 Knock Sensor (1.4L/1.6L DOHC) . . . . . . . . . . 1F612 Knock Sensor (1.8L DOHC) . . . . . . . . . . . . . . . 1F613 Evaporative Emission Canister . . . . . . . . . . . . 1F614
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Evaporative Emission Canister Purge Solenoid Valve 1 F615 Crankshaft Position (CKP) Sensor (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . 1F615 Crankshaft Position (CKP) Sensor (1.8L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F616 Camshaft Position Sensor (1.4L/1.6L DOHC) 1F618 Camshaft Position Sensor (1.8L DOHC) . . . . 1F619 Engine Control Module (1.4L/1.6L DOHC) . . . 1F620 Engine Control Module (1.8L DOHC) . . . . . . . 1F621 Electronic Ignition System Ignition Coil (1.4L/1.6L DOHC) . . . . . . . . . . . . . . . . . . . . . . 1F621 Electronic Ignition System Ignition Coil (1.8L DOHC) . . . . . . . . . . . . . . . . . . . . . . . . . . 1F622 GENERAL DESCRIPTION AND SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F623 Ignition System Operation . . . . . . . . . . . . . . . . 1F623 Electronic Ignition System Ignition Coil . . . . . . 1F623 Crankshaft Position Sensor . . . . . . . . . . . . . . . 1F623 Camshaft Position Sensor . . . . . . . . . . . . . . . . 1F623 Idle Air System Operation . . . . . . . . . . . . . . . . . 1F623 Fuel Control System Operation . . . . . . . . . . . . 1F623 Evaporative Emission Control System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F624 Evaporative Emission Canister . . . . . . . . . . . . 1F625 Positive Crankcase Ventilation System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F625 Engine Coolant Temperature Sensor . . . . . . . 1F625 Throttle Position Sensor . . . . . . . . . . . . . . . . . . 1F625 Catalyst Monitor Oxygen Sensors . . . . . . . . . . 1F625 Exhaust Gas Recirculation Valve . . . . . . . . . . . 1F626 Intake Air Temperature Sensor . . . . . . . . . . . . 1F626 Idle Air Control Valve . . . . . . . . . . . . . . . . . . . . . 1F626 Manifold Absolute Pressure Sensor . . . . . . . . 1F626 Engine Control Module . . . . . . . . . . . . . . . . . . . 1F627 Fuel Injector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F627 Knock Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F627 Rough Road Sensor . . . . . . . . . . . . . . . . . . . . . 1F627 StrategyBased Diagnostics . . . . . . . . . . . . . . 1F628 EOBD Serviceability Issues . . . . . . . . . . . . . . . 1F628 Serial Data Communications . . . . . . . . . . . . . . 1F629 OnBoard Diagnostic (EOBD) . . . . . . . . . . . . . 1F629 Comprehensive Component Monitor Diagnostic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F630 Common EOBD Terms . . . . . . . . . . . . . . . . . . . 1F630 Reading Diagnostic Trouble Codes . . . . . . . . . 1F632 Primary SystemBased Diagnostics . . . . . . . . 1F633

1F 6IENGINE CONTROLS

SPECIFICATIONS
ENGINE DATA DISPLAY TABLES
Engine Data Display Parameter Desired Idle Speed Engine RPM MAP Throttle Position Volt Startup IAT Intake Air Temperature Coolant Temperature (Startup) Engine Coolant Temperature IAC Motor Position O2 Sensor (B1S1) O2 Sensor (B1S2) Fuel System Status Rich/Lean (B1S1) Lean to Rich Average Rich to Lean Average Engine Load Value Short Term Fuel Trim Long Term Fuel Trim Linear EGR Feedback EGR Duty Cycle EGR EWMA Result Spark Advance MIL Odometer MIL On Time Base Injection PWM Barometric Pressure Ignition Voltage Air/Fuel Ratio Calculated Air Flow Total Misfire (Current) Misfire History Cyl. 1 Misfire History Cyl. 2 Misfire History Cyl. 3 Misfire History Cyl. 4 Vehicle Speed A/C Pressure Scaling RPM RPM kPa V C C C C mV mV Closed Loop/Open Loop Rich/Lean mS mS % % % V % Km Min mS kPa V Ratio G/S Km/H V Value ECM idle command (varies with temperature) 50 RPM from desired RPM in drive (A/T) 50 RPM from desired RPM in neutral (M/T) 29 55 (varies with manifold and barometric pressure) 0v varies 10 90 C varies 85 105 C 1 50 11000 mV (varies continuously) 11000 mV (varies continuously) "Closed Loop" (may enter "Open Loop" at extended idle) varies 10 211 ms or 0 ms 10 211 ms or 0 ms 0 100 % (varies) 30 30% 30 30% varies 0% <=0 varies 0 Km 0 Min 1.0 5.0 ms varies with altitude 13.5 14.8 V 14.6 (Closed Loop Enable) varies 0 0 0 0 0 0 Km/H varies
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ENGINE CONTROLS 1F 7
Parameter A/C Request A/C Clutch Fuel Pump Command Closed Loop Throttle At Idle O2 Ready (B1S1) Knock Present Fan Low Fan High TCC Engaged (Only AT) Park/Neutral (Only AT) Fuel Level Input Fuel Level Output Fuel Trim Cell GSensor Engine Runtime Scaling Yes/No On/Off On/Off Yes/No Yes/No Yes/No Yes/No On/Off On/Off Yes/No P/N and R/N/D V % V HH:MM:SS Value No Off On Yes No Yes No On/Off On/Off Yes P/N varies varies 18 1.1 3.7 V (NonABS Only) Hours:Minutes:Seconds

* Condition: Warmed up, idle, park or neutral, A/C off

ENGINE DATA DISPLAY TABLE DEFINITIONS
ECM Data Description The following information will assist in diagnosing emission or driveability problems. A first technician can view the displays while the vehicle is being driven by second technician. Refer to Powertrain OnBoard Diagnostic (EOBD) System Check for addition information. A/C Clutch The A/C Relay represents the commanded state of the A/C clutch control relay. The A/C clutch should be engaged when the scan tool displays ON. A/C Pressure The A/C High Side displays the pressure value of the A/C refrigerant pressure sensor. The A/C High Side helps to diagnose the diagnostic trouble code (DTC) P0533. A/C Request The A/C Request represents whether the air conditioning is being requested from the HVAC selector. The input is received by the instrument panel cluster and then sent serial data to the ECM and finally to the scan tool over KWP 2000 serial data. Air Fuel Ratio The Air Fuel Ration indicates the air to fuel ratio based on the Front Heated Oxygen Sensor (HO2S1) inputs. The ECM uses the fuel trims to adjust fueling in order to attempt to maintain an air fuel ratio of 14.7:1.
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BARO The Barometric Pressure (BARO) sensor measures the change in the intake manifold pressure which results from altitude changes. This value is updated at ignition ON and also at Wide Open Throttle (WOT). Base Injection PWM Indicates the base Pulse Width Modulation (PWM) or ON time of the indicated cylinder injector in milliseconds. When the engine load is increased, the injector pulse width will increase. Calculated Air Flow The calculated air flow is a calculation based on manifold absolute pressure. The calculation is used in several diagnostics to determine when to run the diagnostics. Desired Idle Speed The ECM commands the idle speed. The ECM compensates for various engine loads in order to maintain the desired idle speed. The actual engine speed should remain close to the desired idle under the various engine loads with the engine idling. Engine Coolant Temperature The Engine Coolant Temperature (ECT) sensor sends engine temperature information to the ECM. The ECM supplies 5 volts to the engine coolant temperature sensor circuit. The sensor is a thermistor which changes internal resistance as temperature changes. When the sensor is cold (internal resistance high), the ECM monitors a high voltage which it interprets as a cold engine. As the sensor warms (internal resistance decreases), the voltage signal will decrease and the ECM will interpret the lower voltage as a warm engine.

1F 8IENGINE CONTROLS
EGR Desired Position The desired exhaust gas recirculation (EGR) position is the commanded EGR position. The ECM calculates the desired EGR position. The higher the percentage, the longer the ECM is commanding the EGR valve ON. Engine Load Indicates engine load based on manifold absolute pressure. The higher the percentage, the more load the engine is under. Engine Run Time The engine run time is a measure of how long the engine has been running. When the engine stops running, the timer resets to zero. Engine Speed Engine Speed is computed by the ECM from the fuel control reference input. It should remain close to desired idle under the various engine loads with the engine idling. Fan The Fan Control (FC) Relay is commanded by the ECM. The FC Relay displays the command as ON or OFF. Fuel Level Sensor The Fuel Level Sensor monitors the fuel level in the tank. The Fuel Level Sensor monitors the rate of change of the air pressure in the EVAP system. Several of the Enhanced EVAP System diagnostics are dependent upon the correct fuel level. Fuel System Status The Closed Loop is displayed indicating that the ECM is controlling the fuel delivery according to the Front Heated Oxygen Sensor (HO2S1) voltage as close to an air/fuel ratio of 14.7 to 1 as possible. IAC Position The scan tool displays the ECM command for the Idle Air Control (IAC) pintle position in counts. The higher the number of counts, the greater the commanded idle speed reads. The Idle Air Control responds to changes in the engine load in order to maintain the desired idle rpm. Ignition 1 (Voltage) The ignition volts represent the system voltage measured by the ECM at the ignition feed circuit. Intake Air Temperature The ECM converts the resistance of the Intake Air Temperature (IAT) sensor to degrees in the same manner as the engine coolant temperature (ECT) sensor. In take air temperature is used by the ECM to adjust fuel delivery and spark timing according to incoming air density. Knock Present The KS Noise Channel indicates when the ECM detects the KS signal. The ECM should display NO at idle. Long Term FT The Long Term Fuel Trim (FT) is derived from the short term fuel trim value. The Long Term FT is used for the long term correction of the fuel delivery. A value of 128 counts (0%) indicates that the fuel delivery requires no compensation in order to maintain a 14.7:1 air to fuel ratio. A value below 128 counts means that the fuel system is too rich and the fuel delivery is being reduced. The ECM is decreasing the injector pulse width. A value above 128 counts indicates that a lean condition exists for which the ECM is compensating. MAP The Manifold Absolute Pressure (MAP) sensor measures the change in the intake manifold pressure which results from engine load and speed changes. As the intake manifold pressure increases, the air density in the intake also increases and the additional fuel is required. Misfire History #14 Indicates the number of misfires that have occurred after 195 current misfires have been counted. The current misfire counter will add its misfires to the history misfire counter after 195 total misfires have taken place. If 1 cylinder is misfiring, the misfiring current counter will have 195 misfires counted before adding to its history counter. If 2 cylinders are misfiring, the misfiring current counter will add to their history counters after 97 misfires. The counter increments only after a misfire diagnostic trouble code (DTC) has been set. Front Heated Oxygen Sensor The preconverter Front Heated Oxygen Sensor (HO2S1) reading represents the exhaust oxygen sensor output voltage. This voltage will fluctuate constantly between 100 mv (lean exhaust) and 900 mv (rich exhaust) when the system is operating in a Closed Loop. Rear Heated Oxygen Sensor The postconverter Rear Heated Oxygen Sensor (HO2S2) represents the exhaust oxygen output voltage past the catalytic converter. This voltage remains inactive, or the voltage will appear lazy within a range of 100 mv (lean exhaust) and 900 mv (rich exhaust) when operating in a Closed Loop. Short Term FT The Short Term FT represents a short term correction to fuel delivery by the ECM in response to the amount of time the oxygen sensor voltage spends above or below the 450 mv threshold. If the oxygen sensor has mainly been below 450 mv, indicating a lean air/fuel mixture, short term fuel trim will increase to tell the ECM to add fuel. If the oxygen sensor voltage stays mainly above the threshold, the ECM will reduce fuel delivery to compensate for the indicated rich condition.
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ENGINE CONTROLS 1F 9
Spark Advance This is a display of the spark advance Ignition Coil (IC) calculation which the ECM is programming in the ignition system. It computes the desired spark advance using data such as engine temperature, rpm, engine load, vehicle speed and operating mode. TCC Engaged When the brake pedal is applied, the Torque Converter Clutch (TCC) brake switch sends a signal to the ECM to disengage the TCC and disable the cruise control. Total Misfire Current Counter Indicates the total number of misfires that have been deVehicle Speed The vehicle speed sensor signal is converted into mph or km/h for display. The vehicle speed output from the ECM is 4000 pulses per mile. The scan tool uses the KWP 2000 serial data from the ECM to obtain vehicle speed, while the Instrument Panel Cluster (IPC), cruise control module and the chime alarm module use the 4000 ppm output. tected in all the cylinders after 100 engine cycles. One cycle equals one complete 4 stroke cycle. The total misfire only increments during the steady state cruise conditions. TP Sensor The ECM uses the TP Sensor in order to determine the amount of the throttle demanded by the vehicle's operator. The TP Sensor reads between 0.360.96 volts at idle to above 4 volts at WOT.

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1F 10IENGINE CONTROLS

FASTENER TIGHTENING SPECIFICATIONS
Application Camshaft Position Sensor Bolts (1.4L/1.6L DOHC) Camshaft Position Sensor Bolts (1.8 DOHC) Crankshaft Position Sensor Retaining Bolt (1.4L/1.6L DOHC) Crankshaft Position Sensor Retaining Bolt (1.8 DOHC) Electronic Ignition System Ignition Coil Retaining Bolts Exhaust Gas Recirculation Valve Retaining Bolts Engine Control Module Bolts Engine Coolant Temperature Sensor Bolt (1.4L/1.6L DOHC) Engine Coolant Temperature Sensor Bolt (1.8 DOHC) Evaporative Emission Canister Flange Bolt Evaporative Emission Canister Purge Solenoid Bracket Bolt Fuel Filter Mounting Bracket Assembly Bolt Fuel Tank Retaining Bolts Fuel Rail Retaining Bolts Idle Air Control Valve Retaining Bolts (1.8 DOHC) Intake Air Temperature Sensor Knock Sensor Bolt Manifold Absolute Pressure Sensor Bolts (1.4L/1.6L DOHC) Manifold Absolute Pressure Sensor Bolts (1.8 DOHC) Oxygen Sensor Bolt Throttle Body Retaining Nuts (1.4L/1.6L DOHC) Throttle Body Retaining Nuts (1.8 DOHC) Throttle Position Sensor Retaining Bolts (1.8 DOHC) NSm 7 8 6.5 8 10 30 12 17.5 20 4 5 4 20 25 3 22 20 8 4 42 15 10 2 LbFt 22 13 15 15 18 16 15 31 11 LbIn 62 71 58 71 89 106 35 44 35 27 71 35 89 18

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ENGINE CONTROLS 1F 11

FUEL SYSTEM SPECIFICATIONS
Gasoline All engines are designed to use unleaded fuel only. Unleaded fuel must be used for proper emission control system operation. Its use will also minimize spark plug fouling and extend engine oil life. Using leaded fuel can damage the emission warranty coverage. The fuel should meet specification ASTM D4814 for the U.S. or CGSB 3.5 M93 for Canada. All engines are designed to use unleaded fuel with a minimum U(R+M)/2e (pump) octane number of 87, where R=research octane number, and M=motor octane number. Ethanol You may use fuel containing ethanol (ethyl alcohol) or grain alcohol providing that there is no more than 10 percent ethyl alcohol by volume. Methanol Do not use fuels containing methanol. Methanol can corrode metal parts and cause damage to plastic and rubber parts in the fuel system. Methyl TertiaryButyl Ether (MTBE) You may use fuel containing Methyl TertiaryButyl Ether (MTBE) providing there is no more than 15 percent MTBE by volume.

TEMPERATURE VS RESISTANCE
C F ECT Sensor OHMS Temperature vs Resistance Values (Approximate) 100 90 80 70 60 50 45 40 35 30 25 20 15 10 5 0 5 10 15 20 30 40 212 194 176 158 140 122 113 104 95 86 77 68 59 50 41 32 23 14 5 4 22 40 177 241 332 467 667 973 1188 1459 1802 2238 2796 3520 4450 5670 7280 9420 12300 16180 21450 28680 52700 100700 187 246 327 441 603 837 991 1180 1412 1700 2055 2500 3055 3760 4651 5800 7273 9200 9200 15080 25600 45300 IAT Sensor

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1F 12IENGINE CONTROLS

SCHEMATIC AND ROUTING DIAGRAMS
ECM WIRING DIAGRAM (1.4L/1.6L DOHC 1 OF 6)

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ENGINE CONTROLS 1F 13

ECM WIRING DIAGRAM (1.4L/1.6L DOHC 2 OF 6)

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1F 14IENGINE CONTROLS

ECM WIRING DIAGRAM (1.4L/1.6L DOHC 3 OF 6)

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ENGINE CONTROLS 1F 15

ECM WIRING DIAGRAM (1.4L/1.6L DOHC 4 OF 6)

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1F 16IENGINE CONTROLS

ECM WIRING DIAGRAM (1.4L/1.6L DOHC 5 OF 6)

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ENGINE CONTROLS 1F 17

ECM WIRING DIAGRAM (1.4L/1.6L DOHC 6 OF 6)

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1F 18IENGINE CONTROLS

ECM WIRING DIAGRAM (1.8L DOHC 1 OF 6)

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ENGINE CONTROLS 1F 19

ECM WIRING DIAGRAM (1.8L DOHC 2 OF 6)

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1F 20IENGINE CONTROLS

ECM WIRING DIAGRAM (1.8L DOHC 3 OF 6)

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ENGINE CONTROLS 1F 21

ECM WIRING DIAGRAM (1.8L DOHC 4 OF 6)

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1F 22IENGINE CONTROLS

ECM WIRING DIAGRAM (1.8L DOHC 5 OF 6)

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ENGINE CONTROLS 1F 23

ECM WIRING DIAGRAM (1.8L DOHC 6 OF 6)

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1F 24IENGINE CONTROLS

CONNECTOR END VIEW

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

Engine Control Module (ECM) MR140
T3D11F40

Engine Control Module (ECM) MR140
T3D11F41

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ENGINE CONTROLS 1F 25

1 4

2 5

3 6

Electric Exhaust Gas Recirculation(EEGR) Valve Connector
T3D11F46

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1F 26IENGINE CONTROLS

1

2

3

4

Front Heated Oxygen Sensor (HO2S1) Connector
T3B11F15

1

2

EVAP Canister Purge Solenoid Connector
T3D11F47

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ENGINE CONTROLS 1F 27

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1F 28IENGINE CONTROLS

COMPONENT LOCATOR
COMPONENT LOCATOR (1.4L/1.6L DOHC)

Components on ECM Harness 11. 12. 13. 14. 15. Engine Control Module (ECM) Data Link Connector (DLC) Malfunction Indicator Lamp (MIL) ECM/ABS Harness Ground Fuse Panel (2)

30. Cooling Fan Relays (Low) Information Sensors 31. Manifold Absolute Pressure (MAP) Sensor 32. Front Heated Oxygen Sensor (HO2S1) 33. Variable Geometry Induction System (VGIS) Solenoid 34. Engine Coolant Temperature (ECT) Sensor 35. Intake Air Temperature (IAT) Sensor 36. Vehicle Speed Sensor (VSS) 38. Crankshaft Position (CKP) Sensor 39. Knock Sensor 40. Rear Heated Oxygen Sensor (HO2S2) 41. Camshaft Position (CMP) Sensor Not PCM/ECM Connected 42. Evaporative Emission Canister (under vehicle, behind right rear wheel) 43. Engine Oil Pressure Switch 44. Air Cleaner

ECM Controlled Devices Exhaust Gas Recirculation (EGR) Valve Fuel Injector (4) Main Throttle Idle Actuator (MTIA) Fuel Pump Relay Cooling Fan Relays (High) Cooling Fan Control Relay (A/C Only) Electronic Ignition System Ignition Coil Evaporative Emission (EVAP) Control Purge Solenoid 28. Main Relay 29. A/C Compressor Relay 20. 21. 22. 23. 24. 25. 26. 27.

DAEWOO V121 BL4

ENGINE CONTROLS 1F 29

COMPONENT LOCATOR (1.8L DOHC)

Components on ECM Harness 11. 12. 13. 14. 15. Engine Control Module (ECM) Data Link Connector (DLC) Malfunction Indicator Lamp (MIL) ECM/ABS Harness Ground Fuse Panel (2)

30. Cooling Fan Relays (Low) Information Sensors 31. 32. 33. 34. 35. 36. 38. 39. 40. 41. Manifold Absolute Pressure (MAP) Sensor Front Heated Oxygen Sensor (HO2S1) Throttle Position (TP) Sensor Engine Coolant Temperature (ECT) Sensor Intake Air Temperature (IAT) Sensor Vehicle Speed Sensor (VSS) Crankshaft Position (CKP) Sensor Knock Sensor Rear Heated Oxygen Sensor (HO2S2) Camshaft Position (CMP) Sensor

ECM Controlled Devices 20. 21. 22. 23. 24. 25. 26. 27. Exhaust Gas Recirculation (EGR) Valve Fuel Injector (4) Idle Air Control (IAC) Valve Fuel Pump Relay Cooling Fan Relays (High) Cooling Fan Control Relay (A/C Only) Electronic Ignition System Ignition Coil Evaporative Emission (EVAP) Control Purge Solenoid 28. Main Relay 29. A/C Compressor Relay

Not PCM/ECM Connected 42. Evaporative Emission Canister (under vehicle, behind right rear wheel) 43. Engine Oil Pressure Switch 44. Air Cleaner

DAEWOO V121 BL4

1F 30IENGINE CONTROLS

DIAGNOSIS
SYSTEM DIAGNOSIS DIAGNOSTIC AIDS
If an intermittent problem is evident, follow the guidelines below. Preliminary Checks Before using this section you should have already performed the "OnBoard Diagnostic System Check." Perform a thorough visual inspection. This inspection can often lead to correcting a problem without further checks and can save valuable time. Inspect for the following conditions: S S Engine control module (ECM) grounds for being clean, tight, and in their proper location. Vacuum hoses for splits, kinks, collapsing and proper connections as shown on the Vehicle Emission Control Information label. Inspect thoroughly for any type of leak or restriction. Air leaks at the throttle body mounting area and the intake manifold sealing surfaces. Ignition wires for cracks, hardness, proper routing, and carbon tracking. Wiring for proper connections. Wiring for pinches or cuts. S Poor terminaltowire connection. This requires removing the terminal from the connector body.

Road Test If a visual inspection does not find the cause of the problem, the vehicle can be driven with a voltmeter or a scan tool connected to a suspected circuit. An abnormal voltage or scan tool reading will indicate that the problem is in that circuit. If there are no wiring or connector problems found and a DTC was stored for a circuit having a sensor, except for DTC P0171 and DTC P0172, replace the sensor. Fuel System Some intermittent driveability problems can be attributed to poor fuel quality. If a vehicle is occasionally running rough, stalling, or otherwise performing badly, ask the customer about the following fuel buying habits: S S Do they always buy from the same source? If so, fuel quality problems can usually be discounted. Do they buy their fuel from whichever fuel station that is advertising the lowest price? If so, check the fuel tank for signs of debris, water, or other contamination.

S S S S

IDLE LEARN PROCEDURE
Whenever the battery cables, the engine control module (ECM), or the ECM fuse is disconnected or replaced, the following idle learn procedure must be performed: 1. 2. 3. 4. 5. Turn the ignition ON for 5 seconds. Turn the ignition OFF for 5 seconds. Turn the ignition ON for 5 seconds. Start the engine in park/neutral. Allow the engine to run until the engine coolant is above 185 F (85C ). 6. Turn the A/C ON for 10 seconds, if equipped. 7. Turn the A/C OFF for 10 seconds, if equipped. 8. If the vehicle is equipped with an automatic transaxle, apply the parking brake. While pressing the brake pedal, place the transaxle in D (drive). 9. Turn the A/C ON for 10 seconds, if equipped. 10. Turn the A/C OFF for 10 seconds, if equipped. 11. Turn the ignition OFF. The idle learn procedure is complete.

Diagnostic Trouble Code Tables Do not use the Diagnostic Trouble Code (DTC) tables to try to correct an intermittent fault. The fault must be present to locate the problem. Incorrect use of the DTC tables may result in the unnecessary replacement of parts. Faulty Electrical Connections or Wiring Most intermittent problems are caused by faulty electrical connections or wiring. Perform a careful inspection of suspect circuits for the following: S S S Poor mating of the connector halves. Terminals not fully seated in the connector body. Improperly formed or damaged terminals. All connector terminals in a problem circuit should be carefully inspected, reformed, or replaced to insure contact tension.

DAEWOO V121 BL4

ENGINE CONTROLS 1F 31

TEC (TOOTH ERROR CORRECTION) LEARN PROCEDURE
When an ECM is reflashed, initialized or replaced, and driveplate of fly wheel has been replaced, follow these procedures to relearn the crankshaft position (CKP) system variation : CAUTION : To avoid personal injury when performing the TEC learn procedure, always set the vehicle parking brake and block the drive wheels. Release the throttle immediately when the engine starts to decelerate. Once the learning procedure is completed, engine control will be learned to the operator, and the engine will respond to throttle position.

1. 2. 3. 4. 5. 6. 7. 8. 9.

Stay the gear parking or neutral. Install the scan tool and select "TEC (Toth Error Correction) LEARN" menu. Start the engine with A/C off. Keep the engine coolant temperature above 65C (149 F) Put the acceleration pedal above 4000 RPM until the fuel cutoff occurs. Wait 1015 seconds. Fulfill this procedure again if the scan tool does not display "OK" message. Turn the ignition switch OFF. Turn the ignition swtich ON and then clear the DTC code.

DAEWOO V121 BL4

1F 32IENGINE CONTROLS

ONBOARD DIAGNOSTIC (EOBD) SYSTEM CHECK (1.4L/1.6L DOHC)
Circuit Description The OnBoard Diagnostic (EOBD) system check is the starting point for any driveability complaint diagnosis. Before using this procedure, perform a careful visual/physical check of the engine control module (ECM) and the engine grounds for cleanliness and tightness. The EOBD system check is an organized approach to identifying a problem created by an electronic engine control system malfunction. Diagnostic Aids An intermittent may be caused by a poor connection, rubbedthrough wire insulation or a wire broken inside the insulation. Check for poor connections or a damaged harness. Inspect the ECM harness and connections for improper mating, broken locks, improperly formed or damaged terminals, poor terminaltowire connection, and damaged harness. Test Description Numbers below refer to the step number on the Diagnostic Chart: 1. The Malfunction Indicator Lamp (MIL) should be ON steady with the ignition ON and the engine OFF. If not, go to "Diagnostic Aids". 2. Checks the Class 2 data circuit and ensures that the ECM is able to transmit serial data. 3. This test ensures that the ECM is capable of controlling the MIL and the MIL driver circuit is not shorted to ground. 4. If the engine will not start, refer to "Engine Cranks But Will Not Run" in this section. 7. A scan tool parameter which is not within the typical range may help to isolate the area which is causing the problem. 10. This vehicle is equipped with a ECM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). The replacement ECM must be programmed. Refer to the latest Techline procedure for ECM reprogramming.

DAEWOO V121 BL4

ENGINE CONTROLS 1F 33 OnBoard Diagnostic (EOBD) System Check (1.4L/1.6L DOHC)
Step 1 Action 1. Turn the ignition switch to ON. 2. Observe the Malfunction Indicator Lamp (MIL). Is the MIL illuminate? 1. Turn the ignition switch to LOCK. 2. Install the scan tool to the Data link Connector (DLC). 3. Turn the ignition switch to ON. 4. Attempt to display the Engine Control Module (ECM) engine data with the scan tool. Does the scan tool display the ECM engine data? 1. Using the scan tool output test function, select the MIL lamp control and command the MIL off. 2. Observe the MIL. Does the MIL turn OFF? Attempt to start the engine. Does the engine start and continue to run? Value(s) Yes Go to Step 2 No Go to "No Malfunction Indicator Lamp" Go to Step 8

2



Go to Step 3

3



Go to Step 4

Go to "Malfunction Indicator Lamp on Steady" Go to "Engine Cranks But Will Not Run" Go to Step 7 Go to applicable DTC table

4



Go to Step 5

5 6

Select DISPLAY DTC with the scan tool. Are any Diagnostic Trouble Codes (DTCs) stored? Check the display for DTCs P0107, P0108, P0113, P0118, P0122, P0123, P0712, P1392. Are two or more of the following DTCs stored?



Go to Step 6 Go to "Multiple ECM Information Sensor DTCs Set" Go to "ECM Output Diagnosis" Go to Step 9

7

Compare the ECM data values displayed on the scan tool to the typical engine scan data values. Are the displayed values normal or close to the typical values? Turn the ignition switch to LOCK. Disconnect the ECM connector. Turn the ignition switch to ON. Check the serial data circuit for an open, short to ground, or short to voltage. Also check the DLC ignition feed circuit for an open or short to ground, and check the DLC ground circuits for an open. Is a problem found? Repair the open, short to ground, or short to voltage in the serial data circuit or the DLC ignition feed circuit. Is the repair complete? 1. Attempt to reprogram the ECM. 2. Attempt to display the ECM data with the scan tool. Does the scan tool display ECM engine data? Replace the ECM. Is the replacement complete? 1. 2. 3. 4.



Go to indicated component system check Go to Step 10

8



9



System OK



10



Go to Step 2

Go to Step 11

11



System OK



DAEWOO V121 BL4

1F 34IENGINE CONTROLS

ONBOARD DIAGNOSTIC (EOBD) SYSTEM CHECK (1.8L DOHC)
Circuit Description The OnBoard Diagnostic (EOBD) system check is the starting point for any driveability complaint diagnosis. Before using this procedure, perform a careful visual/physical check of the engine control module (ECM) and the engine grounds for cleanliness and tightness. The EOBD system check is an organized approach to identifying a problem created by an electronic engine control system malfunction. Diagnostic Aids An intermittent may be caused by a poor connection, rubbedthrough wire insulation or a wire broken inside the insulation. Check for poor connections or a damaged harness. Inspect the ECM harness and connections for improper mating, broken locks, improperly formed or damaged terminals, poor terminaltowire connection, and damaged harness. Test Description Numbers below refer to the step number on the Diagnostic Chart: 1. The Malfunction Indicator Lamp (MIL) should be ON steady with the ignition ON and the engine OFF. If not, go to"Diagnostic Aids". 2. Checks the Class 2 data circuit and ensures that the ECM is able to transmit serial data. 3. This test ensures that the ECM is capable of controlling the MIL and the MIL driver circuit is not shorted to ground. 4. If the engine will not start, refer to "Engine Cranks But Will Not Run" in this section. 7. A scan tool parameter which is not within the typical range may help to isolate the area which is causing the problem. 10. This vehicle is equipped with a ECM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). The replacement ECM must be programmed. Refer to the latest Techline procedure for ECM reprogramming.

DAEWOO V121 BL4

ENGINE CONTROLS 1F 35 OnBoard Diagnostic (EOBD) System Check (1.8L DOHC)
Step 1 Action 1. Turn the ignition switch to ON. 2. Observe the Malfunction Indicator Lamp (MIL). Is the MIL illuminate? 1. Turn the ignition switch to LOCK. 2. Install the scan tool to the Data link Connector (DLC). 3. Turn the ignition switch to ON. 4. Attempt to display the Engine Control Module (ECM) engine data with the scan tool. Does the scan tool display the ECM engine data? 1. Using the scan tool output test function, select the MIL lamp control and command the MIL off. 2. Observe the MIL. Does the MIL turn OFF? Attempt to start the engine. Does the engine start and continue to run? Value(s) Yes Go to Step 2 No Go to "No Malfunction Indicator Lamp" Go to Step 8

2



Go to Step 3

3



Go to Step 4

Go to "Malfunction Indicator Lamp on Steady" Go to "Engine Cranks But Will Not Run" Go to Step 7 Go to applicable DTC table

4



Go to Step 5

5 6

Select DISPLAY DTC with the scan tool. Are any Diagnostic Trouble Codes (DTCs) stored? Check the display for DTCs P0107, P0108, P0113, P0118, P0122, P0123, P0712, P1392. Are two or more of the following DTCs stored?



Go to Step 6 Go to "Multiple ECM Information Sensor DTCs Set" Go to "ECM Output Diagnosis" Go to Step 9

7

Compare the ECM data values displayed on the scan tool to the typical engine scan data values. Are the displayed values normal or close to the typical values? Turn the ignition switch to LOCK. Disconnect the ECM connector. Turn the ignition switch to ON. Check the serial data circuit for an open, short to ground, or short to voltage. Also check the DLC ignition feed circuit for an open or short to ground, and check the DLC ground circuits for an open. Is a problem found? Repair the open, short to ground, or short to voltage in the serial data circuit or the DLC ignition feed circuit. Is the repair complete? 1. Attempt to reprogram the ECM. 2. Attempt to display the ECM data with the scan tool. Does the scan tool display ECM engine data? Replace the ECM. Is the replacement complete? 1. 2. 3. 4.



Go to indicated component system check Go to Step 10

8



9



System OK



10



Go to Step 2

Go to Step 11

11



System OK



DAEWOO V121 BL4

1F 36IENGINE CONTROLS

MULTIPLE ECM INFORMATION SENSOR DTCS SET
Circuit Description The Engine Control Module (ECM) monitors various sensors to determine engine operating conditions. The ECM controls fuel delivery, spark advance, transaxle operation, and emission control device operation based on the sensor inputs. The ECM provides a sensor ground to all of the sensors. The ECM applies 5 volts through a pullup resistor and monitors the voltage present between the sensor and the resistor to determine the status of the Engine Coolant Temperature (ECT) sensor, the Intake Air Temperature (IAT) sensor. The ECM provides the Exhaust Gas Recirculation (EGR) Pintle Position Sensor, the Throttle Position (TP) sensor, the Manifold Absolute Pressure (MAP) sensor, and the Fuel Tank Pressure Sensor with a 5 volt reference and a sensor ground signal. The ECM monitors the separate feedback signals from these sensors to determine their operating status. Diagnostic Aids Be sure to inspect the ECM and the engine grounds for being secure and clean. A short to voltage in one of the sensor circuits can cause one or more of the following DTCs to be set: P0108, P0113, P0118, P0123, P1106, P1111, P1115, P1121, P0463, P0533. If a sensor input circuit has been shorted to voltage, ensure that the sensor is not damaged. A damaged sensor will continue to indicate a high or low voltage after the affected circuit has been repaired. If the sensor has been damaged, replace it. An open in the sensor ground circuit between the ECM and the splice will cause one or more of the following DTCs to be set: P0107, P0108, P0113, P0118, P0122, P0123, P1106, P1111, P1115, P1121, P0462, P0532. A short to ground in the 5 volt reference circuit or an open in the 5 volt reference circuit between the ECM and the splice will cause one or more of the following DTCs to be set: P0107, P0112, P0117, P0122, P1107, P1112, P1114, P1122, P0462, P0532. Check for the following conditions: S Inspect for a poor connection at the ECM. Inspect harness connectors for backedout terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminaltowire connection. Inspect the wiring harness for damage. If the harness appears to be OK, observe an affected sensor's displayed value on the scan tool with the ignition ON and the engine OFF while moving connectors and wiring harnesses related to the affected sensors. A change in the affected sensor's displayed value will indicate the location of the fault.

S

Test Description Number(s) below refer to the step number(s) on the Diagnostic Table. The Powertrain OnBoard Diagnostic (EOBD) System Check prompts the technician to complete some basic checks and store the freeze frame and failure records data on the scan tool if applicable. This creates an electronic copy of the data taken when the malfunction occurred. The information is then stored on the scan tool for later reference. 9. A faulty EGR valve can leak a small amount of current from the ignition feed circuit to the 5 volt reference circuit. If the problem does not exist with the EGR valve disconnected, replace the EGR valve. 0. If a sensor input circuit has been shorted to voltage, ensure that the sensor has not been damaged. A damaged IAT or ECT sensor will continue to indicate a high voltage or low temperature after the affected circuit has been repaired. A damaged ACT, TP, MAP, Fuel Tank Pressure, or EGR Pintle Position sensor will indicate a high or low voltage or may be stuck at a fixed value after the affected circuit has been repaired. If the sensor has been damaged, replace it. 21. The replacement ECM must be reprogrammed. Refer to the latest Techline procedure for ECM reprogramming. 1.

DAEWOO V121 BL4

ENGINE CONTROLS 1F 37

Multiple ECM Information Sensor DTCs Set
Step 1 Action Perform an OnBoard Diagnostic (EOBD) system check. Is the check complete. 1. Turn the ignition switch to LOCK. 2. Disconnect the Engine Control Module (ECM) connector. 3. Turn the ignition switch to ON. 4. Check the 5V reference circuit for the following conditions: S Poor connection at the ECM. S Open between the ECM connector affected sensors shorted to ground or voltage. 5. If a problem is found, locate and repair the open or short circuit as needed. Is a problem found? 1. Check the sensor ground circuit for the following conditions: S Poor connection at the ECM or affected sensors. S Open between the ECM connector and the affected sensors. 2. If a problem is found, repair it as needed. Is a problem found? 4 Measure the voltage of the Exhaust Gas Recirculation (EGR) Pintle Position Sensor signal circuit between ECM harness connector and ground. Does the voltage near the specified value? Measure the voltage of the Manifold Absolute Pressure (MAP) sensor signal circuit between the ECM harness connector and ground. Does the voltage near the specified value? Measure the voltage of the Throttle Position (TP) sensor signal circuit between the ECM harness connector and ground. Does the voltage near the specified value? Measure the voltage of the Intake Air Temperature (IAT) sensor signal circuit between the ECM harness connector and ground. Does the voltage near the specified value? Measure the voltage of the Engine Coolant Temperature (ECT) sensor signal circuit between the ECM harness connector and ground. Does the voltage near the specified value? 1. Disconnect the EGR valve connector. 2. Measure the voltage of the EGR Pintle Position sensor signal circuit between the ECM harness connector and ground. Does the voltage near the specified value? 0V Go to Step 5 Go to Step 9 Value(s) Yes Go to Step 2 No Go to "OnBoard Diagnostic System Check" Go to Step 3

2



Go to Step 19

3



Go to Step 19

Go to Step 4

5

0V

Go to Step 6

Go to Step 12

6

0V

Go to Step 7

Go to Step 12

7

0V

Go to Step 8

Go to Step 13

8

0V

Go to Step 16

Go to Step 14

9

0V

Go to Step 10

Go to Step 15

DAEWOO V121 BL4

1F 38IENGINE CONTROLS
Step 10 11 Action Replace the EGR valve. Is the replacement complete? Locate and repair the short to voltage in the MAP sensor signal circuit. Is the repair complete? Locate and repair the short to voltage in the TP sensor signal circuit. Is the repair complete? Locate and repair the short to voltage in the IAT sensor signal circuit. Is the repair complete? Locate and repair the short to voltage in the ECT sensor signal circuit. Is the repair complete? Locate and repair the short to voltage in the EGR Pintle Position sensor circuit. Is the repair complete? Measure the voltage of the fuel tank pressure sensor signal circuit between the ECM harness connector and ground. Does the voltage near the specified value? Locate and repair the short to voltage in the fuel tank pressure sensor signal circuit. Is the replacement complete? Replace the ECM. Is the repair complete? 1. Using the scan tool, clear the Diagnostic Trouble Codes (DTCs). 2. Start the engine and idle at normal operating temperature. 3. Operate the vehicle within the conditions for setting the DTCs as specified in the supporting text. Does the scan tool indicate that this diagnostic ran and passed? Check if any additional DTCs are set. Are any DTCs displayed that have not been diagnosed? Value(s) Yes Go to Step 19 Go to Step 19 No

12



Go to Step 19



13



Go to Step 19



14



Go to Step 19



15



Go to Step 19



16

0V

Go to Step 18

Go to Step 17

17



Go to Step 19



18 19



Go to Step 19 Go to Step 20 Go to Step 2

22



Go to applicable DTC table

System OK

DAEWOO V121 BL4

ENGINE CONTROLS 1F 39

DAEWOO V121 BL4

1F 40IENGINE CONTROLS

ENGINE CRANKS BUT WILL NOT RUN (1.4L/1.6L DOHC)
Test Description The number(s) below refer to step(s) on the diagnostic table. 1. The OnBoard Diagnostic (EOBD) System Check prompts the technician to complete some basic checks and store the freeze frame and failure records data on the scan tool if applicable. This creates an electronic copy of the data taken when the occurred. The information is then stored on the scan tool for later reference. By performing a compression test, it can be determined if the engine has the mechanical ability to run. It is important to check for the presence of spark from all of the ignition wires. If spark is present fro