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Engine General Information And Diagnosis Expand All (for easy ctrl-f) Collapse All Precautions General Description Schematic And Routing Diagram Diagnostic Information And Procedures Engine And Emission Control System Check Visual Inspection Engine Basic Check Malfunction Indicator Lamp (Mil) Check DTC Table For A/T System (Only OBD-II Generic Scan Tool Is Displayed On The Following DTC(S) At The Same Time) DTC Check DTC Clearance Fail-Safe Table Scan Tool Data Notes Scan Tool Data Definitions Coolant Temp (Engine Coolant Temperature, °C, °F) Intake Air Temp. (°C, °F) Engine Speed (Rpm) Desired Idle (Desired Idle Speed, Rpm) MAF (MASS AIR FLOW RATE, g/s, lb/min). CALC Load (Calculated Load Value, %) MAP (MANIFOLD ABSOLUTE PRESSURE, in.Hg, kPa) Throttle Pos (Absolute Throttle Position, %) BAROMETRIC PRESS (kPa, in.Hg) Fuel Tank Level (%): Battery Voltage (V) Brake SW (On/Off) Intake Tuning Sol (Intake Manifold Tuning Valve, On/Off) Fuel System B1 (Fuel System Bank-1 Status) Fuel System B2 (Fuel System Bank-2 Status) O2S Sensor B1 S2 (Heated Oxygen Sensor Bank-1 Sensor-2, V) O2S Sensor B2 S2 (Heated Oxygen Sensor Bank-2 Sensor-2, V) Short Ft B1 (Short Term Fuel Trim Bank-1, %) Short Ft B2 (Short Term Fuel Trim Bank-2, %) Long Ft B1 (Long Term Fuel Trim Bank-1, %) Long Ft B2 (Long Term Fuel Trim Bank- 2, %) Total Fuel Trim B1 (Total Fuel Trim Bank-1, %) Total Fuel Trim B2 (Total Fuel Trim Bank-2, %) A/F B1 S1 CURRENT (A/F SENSOR BANK-1 SENSOR-1 OUTPUT CURRENT, mA) A/F B2 S1 CURRENT (A/F SENSOR BANK-2 SENSOR-1 OUTPUT CURRENT, mA) Fuel Cut (On/Off) O2S B1 S2 Act (Heated Oxygen Sensor Bank-1 Sensor-2, Active/Inactive) O2S B2 S2 Act (Heated Oxygen Sensor Bank-2 Sensor-2, Active/Inactive) A/F B1 S1 Act (A/F Sensor Bank-1 Sensor-1, Active/Inactive) A/F B2 S1 Act (A/F Sensor Bank-2 Sensor-1, Active/Inactive) CANIST PRG Duty (EVAP Canister Purge Flow Duty, %) Ignition Advance (Ignition Timing Advance For No. 1 Cylinder, °) EGR Valve Opening (%) Fuel Pump (On/Off) Starter SW (On/Off) A/C PRESSURE (A/C REFRIGERANT ABSOLUTE PRESSURE, kPa) A/C Switch (On/Off) A/C Comp Relay (A/C Compressor Relay, On/Off) Blower Fan (On/Off) Electric Load (On/Off) PSP Switch (Power Steering Pump Pressure Switch, On/Off) PNP Signal (Transmission Range Sensor, P/N Or D Range): Radiator Cooling Fan Low (Radiator Cooling Fan Control Relay No. 1, On/Off) RDTR Fan No. 1 High (Radiator Cooling Fan Control Relay No. 2, On/Off): RDTR Fan No. 2 High (Radiator Cooling Fan Control Relay No. 3, On/Off) TP Sensor 1 Volt (Throttle Position Sensor (Main) Output Voltage, V) TP Sensor 2 Volt (Throttle Position Sensor (Sub) Output Voltage, V) App Sensor 1 Volt (Accelerator Pedal Position (App) Sensor (Main) Output Voltage, V) App Sensor 2 Volt (Accelerator Pedal Position (App) Sensor (Sub) Output Voltage, V) ACCEL Position (Absolute Accelerator Pedal Position, %) Target Throttle POSI (Target Throttle Valve Position, %) IAC Throttle Opening (Idle Air (Speed) Control Throttle Valve Opening, %): Throttle Motor Volt (V) Closed Throttle Pos (Closed Throttle Position, On/Off) Throttle Motor Relay (On/Off) VEHICLE SPEED (km/h, mph) (INJ PULSE WIDTH B2 (FUEL INJECTION PULSE WIDTH BANK-2, msec). EVAP Vent Valve (EVAP Canister Vent Valve, On/Off) Leak Check Pump (EVAP Leak Detection Pump, On/Off) LEAK CHECK P SENSOR (EVAP LEAK CHECK PRESSURE SENSOR, in. Hg, kPa) Engine Symptom Diagnosis Malfunction Indicator Lamp Does Not Come On With Ignition Switch On And Engine Stop (But Engine Can Be Started) Malfunction Indicator Lamp Remains On After Engine Starts DTC P0031/P0032: Ho2S Heater Control Circuit Low/High (Sensor-1, Bank-1) DTC P0037/P0038: Ho2S Heater Control Circuit Low/High (Sensor-2, Bank-1) DTC P0051/P0052: Ho2S Heater Control Circuit Low/High (Sensor-1, Bank-2) DTC P0057/P0058: Ho2S Heater Control Circuit Low/High (Sensor-2, Bank-2) DTC P0101: Mass Air Flow Circuit Range/Performance DTC P0102/P0103: Mass Air Flow Circuit Low/High Input DTC P0107/P0108: Manifold Absolute Pressure Sensor Circuit Low/High Input DTC P0111: Intake Air Temperature Sensor Circuit Performance DTC P0112/P0113: Intake Air Temperature Sensor Circuit Low/High Input DTC P0116: Engine Coolant Temperature Circuit Range/Performance DTC P0117/P0118: Engine Coolant Temperature Circuit Low/High Input DTC P0122/P0123: Throttle Position Sensor (Main) Circuit Low/High Input DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) DTC P0133/P2A00: O2 Sensor Circuit Slow Response/Performance (Sensor-1, Bank-1) DTC P0134: O2 Sensor Circuit No Activity (Sensor-1, Bank-1) DTC P0137/P0138: O2 Sensor Circuit Low Voltage/High Voltage (Sensor-2, Bank-1) DTC P0139/P2A01: O2 Sensor Circuit Slow Response/Performance (Sensor-2, Bank-1) DTC P0140: O2 Sensor Circuit No Activity Detected (Sensor-2, Bank-1) DTC P0153/P2A03: O2 Sensor Circuit Slow Response/Performance (Sensor-1, Bank-2) DTC P0154: O2 Sensor Circuit No Activity (Sensor-1, Bank-2) DTC P0157/P0158: O2 Sensor Circuit Low Voltage/High Voltage (Sensor-2, Bank-2) DTC P0159/P2A04: O2 Sensor Circuit Slow Response/Performance (Sensor-2, Bank-2) DTC P0160: O2 Sensor Circuit No Activity Detected (Sensor-2, Bank-2) DTC P0171/P0172: System Too Lean/Too Rich (Sensor-1, Bank-1) DTC P0174/P0175: System Too Lean/Too Rich (Sensor-1, Bank-2) DTC P0222/P0223: Throttle Position Sensor (Sub) Circuit Low/High DTC P0300/P0301/P0302/P0303/P0304/P0305/P0306: Misfire Detected DTC P0327/P0328: Knock Sensor Circuit Low/High DTC P0335: Crankshaft Position Sensor Circuit DTC P0336: Crankshaft Position Sensor Circuit Range/Performance DTC P0340: Camshaft Position Sensor Circuit DTC P0341: Camshaft Position Sensor Circuit Range/Performance DTC P0401/P0402: Exhaust Gas RECIRCULATION Flow Insufficient Detected/Excessive Detected DTC P0403: Exhaust Gas RECIRCULATION Control Circuit DTC P0420/P0430: Catalyst System Efficiency Below Threshold (Bank-1/-2) DTC P0441: Evaporative Emission System Incorrect Purge Flow DTC P0444/P0445: EVAP Emission System Purge Control Valve Circuit Open/Shorted DTC P0449: Evaporative Emission System Vent Valve Circuit DTC P0456: Evaporative Emission System Leak Detected (Very Small Leak) DTC P0461: Fuel Level Sensor Circuit Performance DTC P0462/P0463: Fuel Level Sensor Circuit Low/High DTC P0464: Fuel Level Sensor Circuit Intermittent DTC P0480/P0481/P0482: Fan 1/Fan 2/Fan 3 Control Circuit DTC P0500: Vehicle Speed Sensor DTC P0506/P0507: Idle Air Control System Rpm Lower Than Expected/Higher Than Expected DTC P0532/P0533: A/C Refrigerant Pressure Sensor Circuit Low/High DTC P0601/P0602/P0607: Internal Control Module Memory Check Sum Error/Control Module Programming Error/Control Module Performance DTC P0616/P0617: Starter Relay Circuit Low/High DTC P0630: VIN Not Programmed Or Incompatible - ECM DTC P0645: A/C Clutch Relay Control Circuit DTC P0661/P0662: Intake Manifold Tuning Valve Control Circuit Low/High DTC P1107/P1108: Manifold Absolute Pressure Sensor Rationality Check - Low/High DTC P1420/P1421: Evaporative Emission System Vent Valve Stuck Open/Closed DTC P1422: Evaporative Emission System Leak Detect Pump Stuck Off DTC P1424/P1425: Evaporative Emission System Leak Detection Pump Flow High/Low DTC P1510: ECM Back-Up Power Supply Malfunction DTC P1603: TCM Trouble Code Detected DTC P2096/P2097: Post Catalyst Fuel Trim System Too Lean/Too Rich (Sensor-2, Bank-1) DTC P2098/P2099: Post Catalyst Fuel Trim System Too Lean/Too Rich (Sensor-2, Bank-2) DTC P2101: Throttle Actuator Control Motor Circuit Range/Performance DTC P2102: Throttle Actuator Control Motor Circuit Low DTC P2103: Throttle Actuator Control Motor Circuit High DTC P2108: Throttle Actuator Control Module Performance DTC P2119: Throttle Actuator Control Throttle Body Range/Performance DTC P2122/P2123: Pedal Position Sensor (Main) Circuit Low/High DTC P2127/P2128: Pedal Position Sensor (Sub) Circuit Low/High DTC P2135: Throttle Position Sensor (Main/Sub) Voltage Correction DTC P2138: Pedal Position Sensor (Main/Sub) Voltage Correction DTC P2195/P2196: O2 Sensor Signal Stuck Lean/Stuck Rich (Sensor-1, Bank-1) DTC P2197/P2198: O2 Sensor Signal Stuck Lean/Stuck Rich (Sensor-1, Bank-2) DTC P2227: Barometric Pressure Circuit Range/Performance DTC P2228/P2229: Barometric Pressure Circuit Low/High DTC P2237: O2 Sensor Positive Current Control Circuit/Open (Sensor-1, Bank-1) DTC P2238/P2239: O2 Sensor Positive Current Control Circuit Low/High (Sensor-1, Bank-1) DTC P2240: O2 Sensor Positive Current Control Circuit/Open (Sensor-1, Bank-2) DTC P2241/P2242: O2 Sensor Positive Current Control Circuit Low/High (Sensor-1, Bank-2) DTC P2252/P2253: O2 Sensor Negative Current Control Circuit Low/High (Sensor-1, Bank-1) DTC P2255/P2256: O2 Sensor Negative Current Control Circuit Low/High (Sensor-1, Bank-2) DTC P2282: Air Leak Between Throttle Body And Intake Valves Wiring Diagram DTC P2400: Evaporative Emission System Leak Detection Pump Control Circuit Open DTC P2627/P2628: O2 Sensor Pumping Current Trim Circuit Low/High (Sensor-1, Bank-1) DTC P2630/P2631: O2 Sensor Pumping Current Trim Circuit Low/High (Sensor-1, Bank-2) DTC U0073: Control Module Communication Bus Off DTC U0101: Lost Communication With TCM DTC U0121: Lost Communication With Abs/Electronic Stability Program Control Module DTC U0140: Lost Communication With Body Control Module Inspection Of ECM And Its Circuits ECM Power And Ground Circuit Check Fuel Injector Circuit Check Fuel Pump And Its Circuit Check Fuel Pressure Check A/C System Circuits Check Electric Load Signal Circuit Check Radiator Cooling Fan Low Speed Control System Check Radiator Cooling Fan High Speed Control System Check Repair Instructions Special Tools And Equipment