Engine Controls - Self-Diagnostics

• Identification
  • Notes
  • Component Locations
• Diagnostic Tests
  • OBD II SYSTEM CHECK (RETRIEVING DTC's)
  • ECM Output Diagnosis
  • Multiple ECM Information Sensor DTCS Set
• Symptom Diagnosis
  • Diagnostic Aids
    • Notes
    • Preliminary Checks
    • Diagnostic Trouble Code Tables
    • Faulty Electrical Connections Or Wiring
    • Road Test
    • Intermittent Malfunction Indicator Lamp (MIL)
    • Fuel System
  • Idle Learn Procedure
  • Symptom Diagnosis
    • Important Preliminary Checks
    • Intermittents
    • Hard Start
    • Surges Or Chuggles
    • Lack Of Power, Sluggishness, Or Sponginess
    • Detonation/Spark Knock
    • Hesitation, Sag, Stumble
    • Cuts Out, Misses
    • Poor Fuel Economy
    • Rough, Unstable, Or Incorrect Idle, Stalling
    • Excessive Exhaust Emissions Or Odors
    • Dieseling Or Run-On
    • Backfire
  • Engine Cranks But Will Not Run
  • No Malfunction Indicator Lamp
  • Malfunction Indicator Lamp On Steady
  • Fuel System Diagnosis
  • Fuel Pump Relay Circuit Check
  • Ignition Relay No. 1 Circuit Check
  • Manifold Absolute Pressure Check
  • Park/Neutral Position Switch
  • Idle Air Control System Check
  • Ignition System Check
  • Engine Cooling Fan Circuit Check
  • Data Link Connector Diagnosis
  • Fuel Injector Balance Test
  • EVAP Control System Diagnosis
• Trouble Code Diagnosis
  • Clearing Trouble Codes
  • Diagnostic Trouble Code Identification
• Diagnostic Trouble Codes
  • Notes
  • DTC P0106: Manifold Absolute Pressure Rationality
  • DTC P0107: Manifold Absolute Pressure Low Voltage
  • DTC P0108: Manifold Absolute Pressure High Voltage
  • DTC P0112: Intake Air Temperature Low Voltage
  • DTC P0113: Intake Air Temperature High Voltage
  • DTC P0117: Engine Coolant Temperature Low Voltage
  • DTC P0118: Engine Coolant Temperature High Voltage
  • DTC P0121: Throttle Position Sensor Rationality
  • DTC P0122: Throttle Position Sensor Low Voltage
  • DTC P0123: Throttle Position Sensor High Voltage
  • DTC P0125: Engine Coolant Temperature Insufficient For Closed Loop Fuel Control
  • DTC P0128: Stuck Open Thermostat
  • DTC P0131: O2 Bank No. 1, Sensor No. 1, Low Voltage
  • DTC P0132: O2 Bank No. 1, Sensor No. 1, High Voltage
  • DTC P0133: O2 Bank No. 1, Sensor No. 1, Slow Response
  • DTC P0134: O2 Bank No. 1, Sensor No. 1, No Activity
  • DTC P0137: O2 Bank No. 1, Sensor No. 2, Low Voltage
  • DTC P0138: O2 Bank No. 1, Sensor No. 2, High Voltage
  • DTC P0140: O2 Bank No. 1, Sensor No. 2, No Activity
  • DTC P0141: O2 Bank No. 1, Sensor No. 2, Heater
  • DTC P0171: Bank No. 1, System Too Lean
  • DTC P0172: Bank No. 1, System Too Rich
  • DTC P0201: Injector No. 1, Circuit Fault
  • DTC P0202: Injector No. 2, Circuit Fault
  • DTC P0203: Injector No. 3 Circuit Fault
  • DTC P0204: Injector No. 4, Circuit Fault
  • DTC P0300: Multiple Cylinder Misfire
  • DTC P0301: Cylinder No. 1, Misfire
  • DTC P0302: Cylinder No. 2 Misfire
  • DTC P0303: Cylinder No. 3 Misfire
  • DTC P0304: Cylinder No. 4 Misfire
  • DTC P0325: Knock Sensor DSNEF Internal Malfunction
  • DTC P0327: Knock Sensor Circuit Fault
  • DTC P0336: 58X Crank Position Extra/Missing Pulses
  • DTC P0337: 58X Crank Position No Signal
  • DTC P0341: Camshaft Position Sensor Rationality
  • DTC P0342: Camshaft Position Sensor No Signal
  • DTC P0351: Ignition Control Circuit A Fault
  • DTC P0352: Ignition Control Circuit B Fault
  • DTC P0401: Exhaust Gas RECIRCULATION Insufficient Flow
  • DTC P0402: Exhaust Gas RECIRCULATION Excessive Flow
  • DTC P0404: Exhaust Gas RECIRCULATION Open Valve Position Error
  • DTC P0405: Exhaust Gas RECIRCULATION Pintle Position Low Voltage
  • DTC P0406: Exhaust Gas RECIRCULATION Pintle Position High Voltage
  • DTC P0420: Catalyst Bank No. 1, Low Efficiency
  • DTC P0440: Evaporative Emission System Large Leak/Low Tank Vacuum
  • DTC P0442: Evaporative Emission System Small Leak
  • DTC P0443: Evaporative Emission System Purge Control Circuit
  • DTC P0446: Evaporative Emission System Vent Control Malfunction
  • DTC P0449: Evaporative Emission System Vent Solenoid Circuit Fault
  • DTC P0452: Fuel Tank Pressure Sensor Low Voltage
  • DTC P0453: Fuel Tank Pressure Sensor - High Voltage
  • DTC P0461: Fuel Level - Stuck
  • DTC P0462: Fuel Level - Low Voltage
  • DTC P0463: Fuel Level - High Voltage
  • DTC P0464: Fuel Level Rationality
  • DTC P0480: Low Speed Cooling Fan Control Circuit Fault
  • DTC P0502: Vehicle Speed Sensor (Engine Side) No Signal
  • DTC P0506: Idle Speed Rpm Lower Than Desired Idle Speed
  • DTC P0507: Idle Speed Higher Than Desired Idle Speed
  • DTC P0532: A/C Pressure Sensor Low
  • DTC P0533: A/C Pressure Sensor High
  • DTC P0562: System Voltage (Engine Side) Too Low
  • DTC P0563: System Voltage (Engine Side) Too High
  • DTC P0601: ECM (Engine Side) Checksum Fault
  • DTC P0700: Transmission Control System Malfunction
  • DTC P1106: Map Sensor - Intermittent High Voltage
  • DTC P1107: Map Sensor - Intermittent Low Voltage
  • DTC P1111: Intake Air Temperature Sensor - Intermittent High Voltage
  • DTC P1112: Intake Air Temperature Sensor - Intermittent Low Voltage
  • DTC P1114: Engine Coolant Temperature Sensor - Intermittent Low Voltage
  • DTC P1115: Engine Coolant Temperature Sensor - Intermittent High Voltage
  • DTC P1121: Throttle Position Sensor - Intermittent High Voltage
  • DTC P1122: Throttle Position Sensor - Intermittent Low Voltage
  • DTC P1130: O2 Bank No. 1, Sensor No. 1, Low Signal Variance
  • DTC P1133: O2 Bank No. 1, Sensor No. 1, Too Few Transitions
  • DTC P1134: O2 Bank No. 1, Sensor No. 1, Transition Ratio
  • DTC P1171: Fuel Supply System Lean During Power Enrichment
  • DTC P1336: 58X Crank Position Tooth Error Not Learned
  • DTC P1391: G Sensor Rough Road Rationality
  • DTC P1392: G Sensor Rough Road Low Voltage
  • DTC P1393: G Sensor Rough Road High Voltage
  • DTC P1404: Exhaust Gas RECIRCULATION Closed Valve Pintle Error
  • DTC P1441: Evaporative Emission Continuous Purge Flow
  • DTC P1508: Idle Air Control Counts Too Low
  • DTC P1509: Idle Air Control Counts Too High
  • DTC P1520: Park/Neutral Discrete Fault
  • DTC P1546: A/C Clutch Output Circuit Fault
  • DTC P1618: ECM Internal SPI Communication
  • DTC P1625: ECM Internal System Reset
  • DTC P1627: ECM A/D Conversion Error
  • DTC P1635: ECM 5-Volt Reference Line Low
  • DTC P1640: ODM Internal SPI Communication
  • DTC P1781: TCM Mil Request Control Circuit Fault
  • DTC P1782: TCM Mil Request Data Invalid
  • DTC P1895: TCM-To-ECM Torque Reduction Signal Fault
• System Specifications
  • Engine Data Display
    • ECM Data Description
    • A/C Clutch
    • A/C Pressure
    • A/C Request
    • Air Fuel Ratio
    • BARO
    • BPW Bank 1
    • Calculated Air Flow
    • Camshaft Activity Counter
    • Desired Idle
    • Engine Coolant Temperature
    • EGR Desired Position
    • Engine Run Time
    • Engine Speed
    • EVAP Purge
    • EVAP Purge Solenoid
    • EVAP Vent Solenoid
    • Fan
    • Fuel Level Sensor
    • Fuel Tank Pressure Sensor
    • IAC Position
    • Intake Air Temperature
    • Ignition 1 (Voltage)
    • Knock Retard
    • Knock Present
    • Calculated Load
    • Long Term FT
    • Long Term FT Average
    • Loop Status
    • Map
    • Misfire Current #1-4
    • Misfire History #1-4
    • Oxygen Sensor Bank No. 1 Sensor No. 1
    • Oxygen Sensor Bank No. 1 Sensor No. 2
    • Short Term FT
    • Short Term FT Average
    • Spark
    • TCC Brake Switch
    • Total Misfire Current Counter
    • TP Angle
    • TP Sensor
    • Vehicle Speed
  • Data Display Tables
    • Engine Data Display 01
    • Engine Data Display 04
  • EVAP Data Display
    • EVAP Data Display 01
    • EVAP Data Display 02
  • EGR Data Display
    • EGR Data Display
  • Oxygen Sensor Data Display
    • Oxygen Sensor Data Display
  • Misfire Data Display
    • Misfire Data Display
  • TEC Display Table
    • TEC Display Table
  • Fuel System Specifications
    • Gasoline
    • Ethanol
    • Methanol
    • Methyl Tertiary-Butyl Ether (MTBE)
  • Temperature Vs. Resistance
• Wiring Diagrams
  • Connector Identification
  • Wiring Diagrams
• Torque Specifications