A L L Diagnostic Trouble Codes ( DTC )
Testing and Inspection- Diagnostic Trouble Code Descriptions
- Manufacturer Code Charts
- Diagnostic Notes (Read Before Proceding)
- Code to Test Chart
- Driveability (DR) Tests
- DR-1A CODE to DR TEST Chart (Checking for Fault Codes)
- DR-1B Output Circuits of ECM Controlled Components
- DR-1C Checking Switch Inputs to Logic Module
- DR-1D Brake Switch Input Circuit to Logic Module
- DR-1E Park/Neutral Switch Input to Logic Module
- DR-1F A/C Push Button Switch Input to Logic Module
- DR-1G Checking Fuel Injectors
- DR-1H Automatic Idle Speed Motor Operation
- DR-1I Checking AIS Motor For an Open Circuit
- DR-1J AIS Motor Control Wires to Logic Module
- DR-1K Failures Caused By Wiring &/or Connectors
- DR-2A Fault Codes 13 &/or 14 MAP Sensor Circuit
- DR-2B MAP Sensor Circuit In Logic Module
- DR-3A Fault Code 15 Speed Sensor Circuit
- DR-3B Speed Sensor Circuit to Logic Module
- DR-4 Fault Code 16 Battery Voltage Sensing Circuit
- DR-5A Fault Code 21 Oxygen Sensor Circuit
- DR-5B Oxygen Sensor Circuit at Logic Module
- DR-6A Fault Code 22 Coolant Sensor Circuit
- DR-6B Coolant Sensor Circuit to Logic Module
- DR-6C Coolant Sensor Wires to Logic Module
- DR-7A Fault Code 23 Charge Temperature Sensor
- DR-7B Charge Temperature Sensor Signal Circuit
- DR-7C Charge Temperature Sensor Wire to Logic Module
- DR-8A Fault Code 24 Throttle Position Sensor Circuit
- DR-8B Throttle Position Sensor Signal Circuit
- DR-8C Throttle Position Sensor Wires to Logic Module
- DR-8D Check 5 Volt Supply to Throttle Position Sensor
- DR-9A Fault Code 25 Automatic Idle Speed Motor
- DR-9B Checking AIS Motor For A Short to Ground
- DR-9C Checking AIS Motor Circuit For A Short
- DR-9D Checking FJ2 Wire From Power Module
- DR-10A Fault Code 31 Canister Purge Solenoid Circuit
- DR-10B Canister Purge Solenoid Control Wire
- DR-11A Fault Code 33 A/C Cut-Out Relay
- DR-11B Checking A/C Cutout Relay Module Wire
- DR-11C A/C Cut-Out Relay Pull In Coil Windings
- DR-12A Fault Code 34 EGR Solenoid Circuit
- DR-12B Check EGR Solenoid Control Wire For Open
- DR-13A Fault Code 35 Radiator Fan Relay
- DR-13B Radiator Fan Relay Control Wire
- DR-13C Radiator Fan Relay Pull-In Coil Windings
- DR-14A Fault Code 36/36-45-Wastegate Solenoid Circuit
- DR-14B Checking Wastegate Solenoid Control Wire
- DR-15A Fault Code 37 BARO Read Solenoid Circuit
- DR-15B Checking BARO Read Solenoid Control Wire
- DR-16A Fault Codes 41-46 or 46 Charging System
- DR-16B Checking Alternator Field Control
- DR-16C Control Circuit to Logic Module
- DR-17A Fault Codes 47 or 41-47 Charging System
- DR-17B Checking Charging System Field Circuit
- DR-17C Checking Control Wire to Power Module
- DR-17D Checking Power Module Circuit
- DR-17E Checking Power Module Circuit
- DR-17F Checking For Voltage to Alternator Field
- DR-18A Fault Code 44 Battery Temperature Circuit
- DR-18B Battery Temperature Sensor Circuit
- DR-18C Battery Temperature Sensor Circuit
- DR-19A Fault Code 45 Overboost Shut-Off
- DR-19B Vacuum Supply to Wastegate Solenoid
- DR-20A Checking Engine Coolant Temperature Sensor
- DR-20B Sensor Calibrations Throttle Position Sensor
- DR-20C Sensor Calibration MAP Sensor
- DR-20D Charge Temperature Sensor
- DR-20E Battery Temperature Sensor
- DR-21 Checking EGR System
- DR-22 Checking For Fuel Fouled Spark Plugs
- DR-23A Engine Coolant Temperature Sensor
- DR-23B Throttle Position Sensor
- DR-23C Sensor Calibration MAP Sensor
- DR-23D Charge Temperature Sensor
- DR-23E Battery Temperature Sensor
- DR-24A EGR System Vacuum Supply
- DR-24B Check Vacuum Supply From Back Pressure Valve
- DR-24C Checking EGR Valve Operation
- DR-24D Check EGR Valve Vacuum Chamber For Leaks
- DR-25 Checking Secondary Ignition System
- DR-26A Checking Basic Ignition Timing
- DR-26B Checking Spark Advance
- DR-27A Checking Fuel Supply & Return System
- DR-27B Checking For Low Fuel Pressure
- DR-27C Checking For Low Fuel Pressure
- DR-27D Checking For High Fuel Pressure
- DR-28 Checking Oxygen Sensor Operation
- DR-29-Driveability Problems Not Related to Engine Controls
- Heating and Air Conditioning