A L L Diagnostic Trouble Codes ( DTC )
Testing and Inspection- Diagnostic Trouble Code Descriptions
- Manufacturer Code Charts
- 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 Radiator Fan Relay For Voltage & Fan Motor
- DR-1D Radiator Fan Relay Control Circuit
- DR-1E Radiator Fan Relay Voltage at Terminal 4
- DR-1F Radiator Fan Relay Control Circuit
- DR-1G Voltage to Radiator Fan Relay Coil & Relay Coil
- DR-1H Checking For Intermittent Failures
- DR-2A Fault Code 11-Oxygen Solenoid Circuit
- DR-2B Oxygen Solenoid Control Circuit
- DR-2C Oxygen Solenoid Control Circuit
- DR-3A Fault Code 13-V.O.S. Control Solenoid Circuit
- DR-3B V.O.S. Control Solenoid Control Circuit
- DR-3C V.O.S. Control Solenoid Circuit
- DR-4A Fault Code 17-Throttle Control Solenoid Circuit
- DR-4B Throttle Control Solenoid Circuit
- DR-4C Throttle Control Solenoid Circuit
- DR-5A Fault Code 18-Canister Purge Solenoid Circuit
- DR-5B Canister Purge Solenoid Circuit to Computer
- DR-5C Canister Purge Solenoid Control Circuit
- DR-6A Fault Code 22-Feedback System Locked on Lean
- DR-6B Checking Computer Control Circuit
- DR-6C Oxygen Feedback System Control Solenoid
- DR-6D Oxygen Sensor Wire to Computer For Open
- DR-7A Fault Code 23-Feedback System Locked on Rich
- DR-7B Checking Computer Control Circuit
- DR-7C Oxygen Feedback System Control Solenoid
- DR-8A Fault Codes 25 or 26-Coolant Sensor Circuit
- DR-8B Coolant Sensor Circuit to Computer
- DR-8C Fan Sensor Circuit of Computer
- DR-8D Fan Sensor Circuit to Computer
- DR-8E Coolant Sensor Wire For Open to Computer
- DR-9A Fault Code 28-Speed Sensor Circuit
- DR-9B Speed Sensor Circuit to Computer
- DR-9C Speed Sensor Wire For Open Circuit to Computer
- DR-9D Speed Sensor & Transaxle Drive Gear
- DR-10A Checking For No Code 88
- DR-10B Checking For No Code 88
- DR-10C Checking For No Code 88
- DR-11A Choke & Fast Idle Cam Linkage
- DR-12A Choke Vacuum Kick
- DR-13A Heated Air Intake System
- DR-14A Engine Coolant Sensor Calibration
- DR-14B Fan Coolant Sensor Calibration
- DR-15A EGR System CVSCC Valve
- DR-16A Choke Position W/Engine Running
- DR-16B Voltage Supply to Choke Control
- DR-16C Voltage at Oil Pressure Switch
- DR-16D Checking Wire to Choke Control
- DR-16E Vacuum Supply to Choke Vacuum Kick Diaphragm
- DR-17A Checking For Fuel Fouled Spark Plugs
- DR-18A Bowl Vent System
- DR-18B Bowl Vent System
- DR-19A Checking Carburetor Switch
- DR-20A Coolant Sensor Calibration
- DR-20B Coolant Sensor Calibration
- DR-21A Checking Choke Position
- DR-21B Voltage Supply to Choke Control
- DR-21C Voltage Supply to Oil Pressure Switch
- DR-21D Voltage Supply to Oil Pressure Switch
- DR-22A Carburetor Idle Circuit
- DR-23A Checking EGR System
- DR-23B Vacuum Supply to EGR Valve
- DR-23C EGR System CVSCC Valve
- DR-24A Air Switching System
- DR-24B Air Switching CVSCO Valve
- DR-25A Solenoid Kicker Electrical Circuit
- DR-25B Solenoid Kicker Vacuum Diaphragm
- DR-26A Carburetor Bowl Vent System
- DR-26B Carburetor Bowl Vent System
- DR-27A Heated Air Intake System
- DR-28A Calibration of Vacuum Transducer
- DR-29A Solenoid Kicker During Hot Restart
- DR-29B Solenoid Kicker Operation With A/C on
- DR-29C A/C Input Signal to Computer
- DR-29D A/C Input Signal to Computer
- DR-29E Vacuum Supply to Solenoid Kicker
- DR-30A Secondary Ignition System
- DR-31A Check Basic Ignition Timing
- DR-31B Checking Ignition Spark Advance
- DR-31C Vacuum Supply to the Computer
- DR-32A Checking Engine Idle RPM
- DR-32B Checking Idle Mixture
- DR-32C Checking Fast Idle RPM
- DR-32D Checking Throttle Stop RPM
- DR-33 Driveability Problems Not Related to Engine Controls