Engine Control System Diagnosis
- Precautions
- General Description
- Schematic and Routing Diagram
- Component Location
- Diagnostic Information and Procedures
- Engine and Emission Control System Check
- Malfunction Indicator Lamp (MIL) Check
- DTC Check
- DTC Clearance
- DTC Table
- Fail-Safe Table
- Scan Tool Data
- ECM
- Scan Tool Data Definitions
- Fuel System (Fuel System Status)
- Short Term Fuel Trim (%)
- Long Term Fuel Trim (%)
- Total Fuel Trim (%)
- Inj Pulse Width (Fuel Injection Pulse Width, msec.)
- Ignition Advance (Ignition Timing Advance for NO. 1 Cylinder, ° BTDC)
- Calculated Load (Calculated Load Value, %)
- Engine Speed (RPM)
- Desired Idle (Desired Idle Speed, RPM)
- MAF (Mass Air Flow rate, g/sec, lb/min.)
- Vehicle Speed (km/h, mph)
- ECT (Engine Coolant Temperature, °C, °F)
- Intake Air Temperature. (°C, °F)
- Barometric Pres (kPa, mm Hg, in Hg, bar)
- Evap Canist Prg Duty (Evap Canister Purge Flow Duty, %)
- VVT Gap (Target Actual Position, °)
- IMRC Valve (Intake Manifold Runner Control Valve, V)
- IMRC Valve (Com) (Intake Manifold Runner Control Command, Open/Close)
- IMRC Valve (Mon) (Intake Manifold Runner Control Valve Monitor, Open/Closed)
- IAC Throttle Opening (Idle Air Throttle Valve Opening, %)
- TP Sensor 1 Volt (TP Sensor (Main) Output Voltage, V)
- TP Sensor 2 Volt (TP Sensor (SUB) Output Voltage, V)
- APP Sensor 1 Volt (APP Sensor (Main) Output voltage, V)
- APP Sensor 2 Volt (APP Sensor (sub) Output Voltage, V)
- Accel Position (Absolute Accelerator Pedal Position, %)
- Throttle Position (Absolute Throttle Position, %)
- Target throttle Posi (Target throttle Valve Position, %)
- Throttle Motor Volt (Throttle Motor Supply Voltage) (V)
- O2S B1 S2 (Ho2S, V)
- A/F B1 S1 Current (A/F Sensor Output Current, mA)
- Battery Voltage (V)
- A/C Pressure (A/C Refrigerant Absolute Pressure, kPa)
- Generator Cont Duty (Generator Control Duty, %)
- Generator Field Duty (Generator Field Coil Duty, %)
- Leak check P sensor (EVAP Leak check Pressure sensor, in.Hg, kPa)
- Radiator Fan (Radiator Cooling Fan Control Relay, Low/Mid/Hi)
- A/C Comp Relay (A/C Compressor Relay, On/Off)
- Leak Check Pump (Mon) (EVAP Leak Detection Pump, On/Off)
- Fuel Pump (On/Off)
- IMT Valve Actuator (Intake Manifold Tuning Valve, Open/Close)
- Throttle Motor Relay (On/Off)
- Starter SW (Starter Switch, ON/OFF)
- PSP Switch (P/S signal) (Power Steering Pump Pressure Switch, On/Off)
- A/C Switch (On/Off)
- Blower Fan (On/Off)
- Brake Switch (On/Off)
- Electric Load (On/Off)
- PNP Signal (P/N or D range) (A/T model)
- Fuel Cut (On/Off)
- Closed Throttle Pos (Closed Throttle Position, On/Off)
- O2S B1 S2 ACT (HO2S, Active/Inactive)
- A/F B1 S1 ACT (A/F Sensor, Active/Inactive)
- Visual Inspection
- Engine Basic Inspection
- Engine Symptom Diagnosis
- MIL Does Not Come ON with Ignition Switch in ON Position and Engine Stopped (but Engine can be Started)
- MIL Remains ON after Engine Starts
- DTC P0010: Camshaft Position Actuator Circuit
- DTC P0011: Camshaft Position - Timing Over-Advanced or System Performance; DTC P0012: Camshaft Position - Timing Over-retarded
- DTC P0016: Crankshaft Position-Camshaft Position Correlation
- DTC P0031: HO2S Heater Control Circuit Low (Bank-1 Sensor-1); DTC P0032: HO2S Heater Control Circuit High (Bank-1 Sensor-1)
- DTC P0037: HO2S Heater Control Circuit Low (Bank-1 Sensor-2); DTC P0038: HO2S Heater Control Circuit High (Bank-1 Sensor-2)
- DTC P0101: Mass or Volume Air Flow Circuit Range / Performance
- DTC P0102: Mass or Volume Air Flow Circuit Low input; DTC P0103: Mass or Volume Air Flow Circuit High input
- DTC P0111: Intake Air Temperature Sensor 1 Circuit Range Performance
- DTC P0112: Intake Air Temperature Sensor 1 Circuit Low; DTC P0113: Intake Air Temperature Sensor 1 Circuit High
- DTC P0116: Engine Coolant Temperature Circuit Range/Performance; DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control; DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
- DTC P0117: Engine Coolant Temperature Sensor Circuit Low; P0118: Engine Coolant Temperature Sensor Circuit High
- DTC P011B: Engine Coolant Temperature Circuit Performance at Engine Soaking
- DTC P0122: Throttle / Pedal Position Sensor / Switch "A" (Main) Circuit Low; P0123: Throttle / Pedal Position Sensor / Switch "A" (Main) Circuit High
- DTC P0131: O2 Sensor (HO2S) Circuit Low Voltage (Bank-1 Sensor-1); DTC P0132: O2 Sensor (HO2S) Circuit High Voltage (Bank-1 Sensor-1); DTC P0134: O2 Sensor (HO2S) No Activity Detected (Bank-1 Sensor-1); DTC P2195: O2 Sensor Signal Stuck Lean (Bank-1 Sensor-1); DTC P2196: O2 Sensor Signal Stuck Rich (Bank-1 Sensor-1); DTC P2237: O2 Sensor Positive Current Control Circuit/Open
- DTC P0133: O2 Sensor Circuit Slow Response
- DTC P0137: O2 Sensor Circuit Voltage Low (Bank 1, Sensor 2); DTC P0138: O2 Sensor Circuit Voltage High (Bank 1, Sensor 2)
- DTC P0139: O2 Sensor Circuit Slow Response (Bank-1 Sensor-2), DTC P013E: O2 Sensor Delayed Response - Rich To Lean (Bank-1 Sensor-2)
- DTC P0171: System Too Lean; DTC P0172: System Too Rich
- DTC P0222: Throttle / Pedal Position Sensor / Switch "B" Circuit Low; P0223: Throttle / Pedal Position Sensor / Switch "B" Circuit High
- DTC P0300: Random / Multiple Cylinder Misfire Detected; P0301: Cylinder 1 Misfire Detected; P0302: Cylinder 2 Misfire Detected; P0303: Cylinder 3 Misfire Detected; P0304: Cylinder 4 Misfire Detected
- DTC P0327: Knock Sensor 1 Circuit Low; P0328: Knock Sensor 1 Circuit High
- DTC P0335: Crankshaft Position Sensor "A" Circuit
- DTC P0340: Camshaft Position Sensor "A" Circuit
- DTC P0420: Catalyst System Efficiency Below Threshold
- DTC P0441: Evaporative Emission System Incorrect Purge Flow
- DTC P0443: Evaporative Emission System Purge Control Valve Circuit
- DTC P0449: Evaporative Emission System Vent Valve / Solenoid Circuit
- DTC P0456: Evaporative Emission System Leak Detected (Very Small Leak)
- DTC P0461: Fuel Level Sensor "A" Circuit Performance
- DTC P0462: Fuel Level Sensor "A" Circuit Low; P0463: Fuel Level Sensor "A" Circuit High
- DTC P0480: Fan 1 Control Circuit
- DTC P0481: Fan 2 Control Circuit
- DTC P0482: Fan 3 Control Circuit
- DTC P0500: Vehicle Speed Sensor "A"
- DTC P0506: Idle Air Control System RPM Lower than Expected; P0507: Idle Air Control System RPM Higher than Expected
- DTC P050A: Cold Start Idle Air Control System Performance; P050B: Cold Start Ignition Timing Performance
- DTC P0532: A/C Refrigerant Pressure Sensor "A" Circuit Low; P0533: A/C Refrigerant Pressure Sensor "A" Circuit High
- DTC P0560: ECM Back-Up Power Supply Malfunction
- DTC P0601: Internal Control Module Memory Check Sum Error; P0607: Control Module Performance; P2610: ECM / PCM Internal Engine Off Timer Performance
- DTC P0602: Control Module Programming Error
- DTC P0616: Starter Relay Circuit Low; P0617: Starter Relay Circuit High
- DTC P0620: Generator Control Circuit
- DTC P0625: Generator Field Terminal Circuit Low; P0626: Generator Field Terminal Circuit High
- DTC P0630: VIN Not Programmed or Incompatible-ECM
- DTC P0660: Intake Manifold Tuning Valve Control Circuit / Open
- DTC P2004: Intake Open Manifold Runner Control Stuck ; P2006: Intake Manifold Runner Control Stuck Closed
- DTC P2008: Intake Manifold Runner Control Circuit/Open
- DTC P2016: Intake Manifold Runner Position Sensor/Switch Circuit Low; P2017: Intake Manifold Runner Position Sensor/Switch Circuit High
- DTC P2096: Post Catalyst Fuel Trim System Too Lean; P2097: Post Catalyst Fuel Trim System Too Rich
- DTC P2101: Throttle motor Control Motor Circuit Range / Performance
- DTC P2102: Throttle motor Control Motor Circuit Low; P2103: Throttle motor Control Motor Circuit High
- DTC P2111: Throttle motor Control System-Stuck Open
- DTC P2119: Throttle motor Control Throttle Body Range / Performance
- DTC P2122: Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input; P2123: Throttle / Pedal Position Sensor / Switch "D" Circuit High Input
- DTC P2127: Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input; P2128: Throttle / Pedal Position Sensor / Switch "E" Circuit High Input
- DTC P2135: Throttle / Pedal Position Sensor / Switch "A" / "B" Voltage Correlation
- DTC P2138: Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation
- DTC P2227: Barometric Pressure Circuit Performance (EVAP-Leak-Check Model)
- DTC P2228: Barometric Pressure Circuit Low; P2229: Barometric Pressure Circuit High (EVAP-Leak-Check Model)
- DTC P2227: Barometric Pressure Circuit Performance ; P2228: Barometric Pressure Circuit Low; P2229: Barometric Pressure Circuit High (Non-EVAP-Leak-Check Model)
- DTC P2400: Evaporative Emission System Leak Detection Pump Control Circuit / Open
- DTC P2404: Evaporative Emission System Leak Detection Pump Sense Circuit Range / Performance
- DTC P2A01: O2 Sensor Circuit Range / Performance (Bank 1, Sensor 2)
- DTC U0073: Control Module Communication Bus Off
- DTC U0101: Lost Communication with TCM
- DTC U0121: Lost Communication With Anti-Lock Brake System (ABS) Control Module
- DTC U0140: Lost Communication With Body Control Module
- DTC U0155: Lost Communication With Instrument Panel Cluster (IPC) Control Module
- Inspection of ECM and Its Circuits
- ECM Power and Ground Circuit Check
- Repair Instructions
- Special Tools and Equipment