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Engine General Information And Diagnosis Expand All (for easy ctrl-f) Collapse All 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 Notes Scan Tool Data Definitions Engine Speed (Rpm) DESIRED IDLE (Desired idle speed, RPM) IAC FLOW DUTY (Idle air (speed) control duty, %) COOLANT TEMP (Engine coolant temperature, °C, °F) Intake Air Temp. (°C, °F) MAF (Mass air flow rate, g/s, lb/min) CALC LOAD (Calculated load value, %) THROTTLE POSITION (Absolute throttle position, %) TP SENSOR VOLT (Throttle position sensor output voltage, V) MAP (Intake manifold absolute pressure, kPa, in.Hg) BAROMETRIC PRES (Barometric pressure, kPa, in.Hg) FUEL SYSTEM B1 (Fuel system status) INJ PULSE WIDTH (Fuel injection pulse width, msec.) O2S B1 S1 (Heated oxygen sensor-1, V) O2S B1 S2 (Heated oxygen sensor-2, V) SHORT FT B1 (Short term fuel trim, %) LONG FT B1 (Long term fuel trim, %) Total Fuel Trim B1 (%) Fuel Cut (On/Off) CANIST PRG DUTY (EVAP canister purge flow duty, %) EVAP VENT VALVE (Canister vent valve in EVAP leak check module, ON/OFF) LEAK CHECK PUMP (Leak detecting pump in EVAP leak check module, ON/OFF) FUEL TANK PRESS (Fuel tank pressure, mmHg, kPa) Fuel Tank Level (%) EVAP Fuel Vapor Temp (°C, °F) IGNITION ADVANCE (Ignition timing advance for No. 1 cylinder, °) Step EGR Flow Duty (%) Battery Voltage (V) Fuel Pump (On/Off) PNP SIGNAL (Park / Neutral position signal, P/N range or D range) A/C Switch (On/Off) Blower Fan (On/Off) A/C COND Fan (On/Off) PSP SWITCH (Power steering pressure switch, ON/OFF) CLOSED THROT POS (Closed throttle position ON/OFF) VEHICLE SPEED (Km/h, mph) Visual Inspection Engine Basic Inspection Engine Symptom Diagnosis Malfunction Indicator Lamp Does Not Come ON at Ignition Switch ON (But Engine at Stop) Malfunction Indicator Lamp Remains ON after Engine Starts DTC P0101: Mass Air Flow Circuit Range / Performance DTC P0102: Mass Air Flow Sensor Circuit Low Input DTC P0103: Mass Air Flow Sensor Circuit High Input DTC P0107: Manifold Absolute Pressure Circuit Low Input DTC P0108: Manifold Absolute Pressure Circuit High Input DTC P0111: Intake Air Temperature Circuit Range / Performance DTC P0112: Intake Air Temperature Circuit Low DTC P0113: Intake Air Temperature Circuit High DTC P0116: Engine Coolant Temperature Circuit Range / Performance DTC P0117: Engine Coolant Temperature Circuit Low Input DTC P0118: Engine Coolant Temperature Circuit High Input DTC P0121: Throttle Position Sensor Circuit Range / Performance DTC P0122: Throttle Position Sensor Circuit Low Input DTC P0123: Throttle Position Sensor Circuit High DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control DTC P0128: Coolant Thermostat DTC P0131 / P0132: O2 Sensor Circuit Low / High Voltage (Sensor-1) (For Vehicle with ORVR) DTC P0131 / P0132: O2 Sensor Circuit Low / High Voltage (Sensor-1) (For Vehicle without ORVR) DTC P0133: O2 Sensor Circuit Slow Response (Sensor-1) DTC P0134: O2 Sensor No Activity Detected (Sensor-1) DTC P0135: O2 Sensor Heater Circuit (Sensor-1) DTC P0137 / P0138: O2 Sensor Circuit Low / High Voltage (Sensor-2) (For Vehicle with ORVR) DTC P0137 / P0138: O2 Sensor Circuit Low / High Voltage (Sensor-2) (For Vehicle without ORVR) DTC P0139: O2 Sensor Circuit Slow Response (Sensor-2) DTC P0141: O2 Sensor Heater Circuit (Sensor-2) DTC P0171 / P0172: System Too Lean / Rich DTC P0300 / P0301 / P0302 / P0303 / P0304: Random / Cylinder 1 / Cylinder 2 / Cylinder 3 / Cylinder 4 Misfire Detected DTC P0327 / P0328: Knock Sensor Circuit Low / High DTC P0335: Crankshaft Position Sensor Circuit DTC P0340: Camshaft Position Sensor Circuit DTC P0401 / P0402: Exhaust Gas Recirculation Flow Insufficient / Excessive Detected DTC P0403: Exhaust Gas Recirculation Control Circuit DTC P0420: Catalyst System Efficiency below Threshold DTC P0441: Evaporative Emission System Incorrect Purge Flow DTC P0444: Evaporative Emission System Purge Control Valve Circuit Open DTC P0445: Evaporative Emission Control System Purge Control Valve Circuit Shorted DTC P0449: Evaporative Emission System Vent Valve / Solenoid Circuit DTC P0456: Evaporative Emission System Leak Detected (Very Small Leak) DTC P0461: Fuel Level Sensor Circuit Range / Performance DTC P0462/P0463: Fuel Level Sensor Circuit Low/High DTC P0464: Fuel Level Sensor Circuit Intermittent DTC P0480: Cooling Fan 1 Control Circuit DTC P0481: Cooling Fan 2 Control Circuit DTC P0500: Vehicle Speed Sensor DTC P0505 / P0506 / P0507: Idle Air Control System Malfunction / RPM Lower than Expected / RPM Higher than Expected DTC P0601 / P0602 / P0607: Internal Control Module Memory Check Sum Error / Control Module Programming Error / Control Module Performance DTC P0616: Starter Relay Circuit Low DTC P0617: Starter Relay Circuit High DTC P0630: VIN Not Programmed or Incompatible-ECM DTC P1107: Manifold Absolute Pressure Circuit Range / Performance Low DTC P1108: Manifold Absolute Pressure Circuit Range / Performance 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 Detecting Pump Flow High/Low DTC P1510: ECM Back-Up Power Supply Malfunction DTC P1600: Serial Communication Problem Between ECM and TCM DTC P1717: A/T Driver Range Signal Circuit Malfunction DTC P2227 / P2228 / P2229: Barometric Pressure Circuit Range Performance / Low / High DTC P2400: Evaporative Emission System Leak Detection Pump Control Circuit / Open DTC P2A00: O2 Sensor Circuit Range / Performance DTC P2A01: O2 Sensor Circuit Range / Performance Inspection of ECM and Its Circuits ECM Power and Ground Circuit Check Fuel Injector Circuit Check Fuel Pump Circuit Check Fuel Pressure Check Idle Air Control (IAC) System Check Throttle Valve Opening Signal Inspection Radiator Fan Control System Check Power Steering Pressure (PSP) Switch Signal Circuit Check Electric Load Signal Circuit Check A/C Control System Inspection A/C Condenser Fan Control System Inspection A/C Signal Circuits Check (Vehicle with A/C) Repair Instructions Special Tools and Equipment