Engine Control - Self-Diagnostics

• Introduction
  • 6-Step Trouble Shooting Procedure
  • System Description
    • General Description
  • Functional Operation
    • Fuel Control
    • On-Board Diagnostics
  • Other Controls
    • Charging System
    • Fuel Vapor Recovery System (Duty Cycle Purge Control)
    • Leak Detection Pump System
  • Pcm Operating Modes
  • Ignition Switch On (Engine Off) Mode
  • Non-Monitored Circuits
  • Diagnostic Trouble Codes
  • Starts Since Set Counter
  • No Trouble Code Faults
  • No Start Diagnosis
    • Important Note:
    • For ABS & Air Bag Systems
    • For Skim Theft Alarm:
  • Retrieving Codes
  • Warnings & Cautions
    • Technician Safety Information
    • Vehicle Preparation For Testing
    • Servicing Sub-Assemblies
    • Road Test Warnings
    • Vehicle Damage Cautions
• Diagnostic Trouble Codes
  • Hard Codes
  • Intermittent Codes
• Component Identification
  • Powertrain Control Module
  • Connector Identification
  • Data Link Connector
  • Sensor & Connector Identification
  • Fuel System
  • Relays
• System Tests
  • *Read This First*
  • Diagnostic Trouble Code Definitions
  • DTC P0107-A: Map Sensor Voltage Too Low
  • DTC P0108-A: Map Sensor Voltage Too High
  • DTC P0112-A: Intake Air Temp Sensor Voltage Low
  • DTC P0113-A: Intake Air Temp Sensor Voltage High
  • DTC P0117-A: ECT Sensor Voltage Too Low
  • DTC P0118-A: ECT Sensor Voltage Too High
  • DTC P0121-A: TPS Voltage Does Not Agree With Map
  • DTC P0122-A: Throttle Position Sensor Voltage Low
  • DTC P0123-A: Throttle Position Sensor Voltage High
  • DTC P0125-A: Closed Loop Temp Not Reached
  • DTC P0131-A: 1/1 O2 Sensor Shorted To Ground
  • DTC P0132-A: 1/1 O2 Sensor Shorted To Voltage
  • DTC P0132-B: 1/1 O2 Sensor Shorted To Voltage
  • DTC P0132-C: 1/1 O2 Sensor Shorted To Voltage
  • DTC P0133-A: 1/1 O2 Sensor Slow Response
  • DTC P0135-A: 1/1 O2 Sensor Heater Failure
  • DTC P0135-B: 1/1 O2 Sensor Heater Failure
  • DTC P0137-A: 1/2 O2 Sensor Shorted To Ground
  • DTC P0138-A: 1/2 O2 Sensor Shorted To Voltage
  • DTC P0138-B: 1/2 O2 Sensor Shorted To Voltage
  • DTC P0138-C: 1/2 O2 Sensor Shorted To Voltage
  • DTC P0141-A: 1/2 O2 Sensor Heater Failure
  • DTC P0141-B: 1/2 O2 Sensor Heater Failure
  • DTC P0151-A: 2/1 O2 Sensor Shorted To Ground
  • DTC P0152-A: 2/1 O2 Sensor Shorted To Voltage
  • DTC P0152-B: 2/1 O2 Sensor Shorted To Voltage
  • DTC P0152-C: 2/1 O2 Sensor Shorted To Voltage
  • DTC P0153-A: 2/1 O2 Sensor Slow Response
  • DTC P0155-A: 2/1 O2 Sensor Heater Failure
  • DTC P0155-B: 2/1 O2 Sensor Heater Failure
  • DTC P0157-A: 2/2 O2 Sensor Shorted To Ground
  • DTC P0158-A: 2/2 O2 Sensor Shorted To Voltage
  • DTC P0158-B: 2/2 O2 Sensor Shorted To Voltage
  • DTC P0158-C: 2/2 O2 Sensor Shorted To Voltage
  • DTC P0161-A: 2/2 O2 Sensor Heater Failure
  • DTC P0161-B: 2/2 O2 Sensor Heater Failure
  • DTC P0171-A: Fuel System 1/1 Lean
  • DTC P0171-B: Fuel System 1/1 Lean
  • DTC P0172-A: Fuel System 1/1 Rich
  • DTC P0172-B: Fuel System 1/1 Rich
  • DTC P0174-A: Fuel System 2/1 Lean
  • DTC P0174-B: Fuel System 2/1 Lean
  • DTC P0175-A: Fuel System 2/1 Rich
  • DTC P0175-B: Fuel System 2/1 Rich
  • DTC P0201-A: Injector No. 1 Control Circuit
  • DTC P0202-A: Injector No. 2 Control Circuit
  • DTC P0203-A: Injector No. 3 Control Circuit
  • DTC P0204-A: Injector No. 4 Control Circuit
  • DTC P0205-A: Injector No. 5 Control Circuit
  • DTC P0206-A: Injector No. 6 Control Circuit
  • DTC P0207-A: Injector No. 7 Control Circuit
  • DTC P0208-A: Injector No. 8 Control Circuit
  • DTC P0209-A: Injector No. 9 Control Circuit
  • DTC P0210-A: Injector No. 10 Control Circuit
  • DTC P0300-A: Multiple Cylinder Misfire
  • DTC P0301-A: Cylinder No. 1 Misfire
  • DTC P0302-A: Cylinder No. 2 Misfire
  • DTC P0303-A: Cylinder No. 3 Misfire
  • DTC P0304-A: Cylinder No. 4 Misfire
  • DTC P0305-A: Cylinder No. 5 Misfire
  • DTC P0306-A: Cylinder No. 6 Misfire
  • DTC P0307-A: Cylinder No. 7 Misfire
  • DTC P0308-A: Cylinder No. 8 Misfire
  • DTC P0309-A: Cylinder No. 9 Misfire
  • DTC P0310-A: Cylinder No. 10 Misfire
  • DTC P0320-A: No Crank Reference Signal At Pcm
  • DTC P0320-B: No Crank Reference Signal At Pcm
  • DTC P0340-A: No Cam Signal At Pcm
  • DTC P0340-B: No Cam Signal At Pcm
  • DTC P0351-A: Ignition Coil No. 1 Primary Circuit
  • DTC P0351-B: Ignition Coil No. 1 Primary Circuit
  • DTC P0352-A: Ignition Coil No. 2 Primary Circuit
  • DTC P0352-B: Ignition Coil No. 2 Primary Circuit
  • DTC P0353-A: Ignition Coil No. 3 Primary Circuit
  • DTC P0353-B: Ignition Coil No. 3 Primary Circuit
  • DTC P0354-A: Ignition Coil No. 4 Primary Circuit
  • DTC P0354-B: Ignition Coil No. 4 Primary Circuit
  • DTC P0355-A: Ignition Coil No. 5 Primary Circuit
  • DTC P0355-B: Ignition Coil No. 5 Primary Circuit
  • DTC P0420-A: Catalyst 1/1 Efficiency Failure
  • DTC P0432-A: Catalyst 2/1 Efficiency Failure
  • DTC P0441-A: EVAP Purge Flow Monitor Failure
  • DTC P0442-A: EVAP Leak Monitor Small (.040) Leak Detected
  • DTC P0443-A: EVAP Purge Solenoid Circuit
  • DTC P0455-A: EVAP Leak Monitor Large Leak Detected
  • DTC P0460-A: Fuel Level Unit No Change Over Miles
  • DTC P0461-A: Fuel Level Unit No Change Over Time
  • DTC P0462-A: Fuel Level Sending Unit Volts Too Low
  • DTC P0463-A: Fuel Level Sending Unit Volts Too High
  • DTC P0500-A: No Vehicle Speed Sensor Signal
  • DTC P0500-B: No Vehicle Speed Sensor Signal
  • DTC P0500-C: No Vehicle Speed Sensor Signal
  • DTC P0505-A: Idle Air Control Motor Circuits
  • DTC P0505-B: Idle Air Control Motor Circuits
  • DTC P0505-C: Idle Air Control Motor Circuits
  • DTC P0505-D: Idle Air Control Motor Circuits
  • DTC P0505-E: Idle Air Control Motor Circuits
  • DTC P0622-A: Generator Field Not Switching Properly
  • DTC P0645-A: A/C Clutch Relay Circuit
  • DTC P0801-A: Reverse Gear Lock-Out Circuit Open Or Short
  • DTC P1195-A: Slow 1/1 O2 Sensor During Catalyst Monitor
  • DTC P1196-A: Slow 2/1 O2 Sensor During Catalyst Monitor
  • DTC P1282-A: Fuel Pump Relay Control Circuit
  • DTC P1294-A: Target Idle Not Reached
  • DTC P1294-B: Target Idle Not Reached
  • DTC P1296-A: No 5 Volts To Map Sensor
  • DTC P1297-A: No Change In Map From Start To Run
  • DTC P1388-A: Auto Shutdown Relay Control Circuit
  • DTC P1389-A: No ASD Relay Output Voltage At Pcm
  • DTC P1391-A: Intermittent Loss Of CMP Or CKP
  • DTC P1398-A: Misfire Adaptive Numerator At Limit
  • DTC P1486-A: EVAP Leak Monitor Pinched Hose Found
  • DTC P1489-A: High Speed Fan Relay Circuit
  • DTC P1490-A: Low Speed Fan Relay Circuit
  • DTC P1492-A: Battery Temp Sensor (BTS) Voltage Too High
  • DTC P1493-A: Battery Temp Sensor (BTS) Voltage Too Low
  • DTC P1494-A: Leak Detection Pump SW Or Mechanical Fault
  • DTC P1495-A: Leak Detection Pump Solenoid Circuit
  • DTC P1594-A: Charging System Voltage Too High
  • DTC P1594-B: Charging System Voltage Too High
  • DTC P1682-A: Charging System Voltage Too Low
  • DTC P1696-A: Pcm Failure EEPROM Write Denied
  • DTC P1719-A: Skip Shift Solenoid Circuit
• No Trouble Code Tests
  • Test NTC-1A: No Trouble Code Test Chart
  • Test NTC-2A: Checking Secondary Ignition & Timing
  • Test NTC-3A: Checking Pcm Power & Ground Circuits
  • Test NTC-5A: Checking Fuel Delivery
  • Test NTC-6A: Checking Coolant Sensor Calibration
  • Test NTC-7A: Checking Throttle Position Sensor Calibration
  • Test NTC-8A: Checking Map Sensor
  • Test NTC-10A: Checking Oxygen Sensor Switching
  • Test NTC-10B: Checking Oxygen Sensor Switching
  • Test NTC-11A: Checking Oxygen Sensor Heater
  • Test NTC-13A: Checking Engine Mechanical Systems
  • Test NTC-15A: Checking Battery Temp Sensor (BTS)
  • Test NTC-16A: Checking Brake Switch
  • Test NTC-17A: Checking EVAP System
  • Test NTC-19A: Checking Intake Air Temp Sensor
  • Test NTC-26A: Checking A/C System
  • Test NTC-27A: Checking Radiator Fan Operation
• Charging Tests
  • Test Ch-1A: Charging System No Code Test
• No Start Tests
  • Test NS-SEL: No Start Selection Menu
  • Test NS-1A: Qualifying A No Start Condition
  • Test NS-2A: Checking Fuel System
  • Test NS-3A: Checking Mechanical System
  • Test NS-4A: Repairing Low Fuel Pressure
  • Test NS-5A: Checking Fuel Pump
  • Test NS-6A: Repairing A "No Response" Condition
  • Test NS-6B: Repairing A "No Response" Condition
  • Test NS-6C: Repairing A "No Response" Condition
  • Test NS-6D: Repairing A "No Response" Condition
  • Test NS-8A: Repairing A Start & Stall Condition
  • Test NS-9A: Repairing A No Crank Condition
• Verification Tests
  • Test VER-1A: No Start Verification
  • Test VER-2A: Road Test Verification
  • Test VER-3A: Charging Verification
  • Test VER-5A: Road Test For OBDII Trouble Codes
  • Test VER-6A: LDP Road Test
• Wiring Diagrams