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 SMEC
- DR-1D Brake Switch Input to SMEC - Less Speed Control
- DR-1E Brake Switch Input to SMEC (With Speed Control)
- DR-1F Park/Neutral Switch Input to the SMEC
- DR-1G A/C Push Button Switch Input to the SMEC
- DR-1H Checking 5 Volt Supply to MAP Sensor
- DR-1I Automatic Idle Speed Motor Operation
- DR-1J Automatic Idle Speed Motor Signal
- DR-1K AIS Motor Circuit at SMEC 60-Way Connector
- DR-1L Checking AIS Motor SMEC 60-Way Connector
- DR-1M AIS Motor Wires at the SMEC 60-Way Connector
- DR-1N Checking Fuel Injectors
- DR-1O Checking SMEC Ground Circuits
- DR-1P Failures Caused By Wiring &/or Connectors
- DR-2A Fault Codes 13 &/or 14 MAP Sensor Circuit
- DR-2B Check MAP Sensor Circuit In SMEC
- DR-2C MAP Sensor Signal Circuit
- DR-2D MAP Sensor Wires to SMEC For Open Circuit
- DR-2E Checking 5 Volt Supply to MAP Sensor
- DR-3A Fault Code 15-Speed Sensor Circuit
- DR-3B Speed Sensor Signal Wire to SMEC For Open
- DR-3C Speed Sensor Ground Wire to SMEC For Open
- DR-4A Fault Code 21-Oxygen Sensor Circuit
- DR-4B Oxygen Sensor Wire to SMEC For Open Circuit
- DR-5A Fault Code 22-Coolant Sensor Circuit
- DR-5B Coolant Sensor Circuit to SMEC
- DR-5C Coolant Sensor Wires to SMEC For Open Circuit
- DR-6A Fault Code 23 Charge Temperature Sensor
- DR-6B Charge Temperature Sensor Circuit to SMEC
- DR-6C Charge Temp Sensor Wires to SMEC For an Open
- DR-7A Fault Code 24-Throttle Position Sensor Circuit
- DR-7B Throttle Position Sensor Signal to SMEC
- DR-7C TPS Wires to SMEC For Open Circuit
- DR-7D Check 5 Volt Supply to Throttle Position Sensor
- DR-8A Fault Code 25-Automatic Idle Speed Motor
- DR-8B AIS Motor Circuit For A Short
- DR-8C Check AIS Motor Control Wires For A Short
- DR-9A Fault Code 31-Canister Purge Solenoid Circuit
- DR-9B Canister Purge Solenoid Control Wire
- DR-9C Canister Purge Solenoid Supply Voltage
- DR-9D Canister Purge Solenoid Circuit For A Short
- DR-10A Fault Code 33 A/C Cutout Relay
- DR-10B A/C Cutout Relay Module Wire to SMEC
- DR-10C A/C Cutout Relay Pull-In Coil Circuit
- DR-10D Voltage Supply to A/C Cutout Relay Pull In Coil
- DR-11A Fault Code 35 Radiator Fan Relay
- DR-11B Radiator Fan Relay Control Wire
- DR-11C Radiator Fan Relay Pull-In Coil Windings
- DR-11D Voltage to Radiator Fan Relay Pull In Coil
- DR-12A Fault Code 36 Wastegate Solenoid Circuit
- DR-12B Wastegate Solenoid Control Wire
- DR-12C Supply Voltage at Wastegate Solenoid
- DR-12D Wastegate Solenoid Control Circuit
- DR-13A Fault Code 37 BARO Read Solenoid Circuit
- DR-13B BARO Read Solenoid Control Wire
- DR-13C BARO Read Solenoid Supply Voltage
- DR-13D Purge Solenoid Circuit In SMEC
- DR-14 Fault Code 44 Fused J2 Circuit
- DR-15A Fault Code 45 Overboost Shutoff
- DR-15B Vacuum Supply to Wastegate Solenoid
- DR-16A Engine Coolant Temperature Sensor
- DR-16B Throttle Position Sensor
- DR-16C Checking Throttle Position Sensor
- DR-16D Sensor Calibration-Throttle Position Sensor
- DR-16E Manifold Absolute Pressure Sensor
- DR-16F Checking MAP Sensor
- DR-16G Sensor Calibration-Charge Temperature Sensor
- DR-17 Checking For Fuel Fouled Spark Plugs
- DR-18A Sensor Calibrations-Coolant Temperature
- DR-18B Sensor Calibrations-Throttle Position Sensor
- DR-18C Checking Throttle Position Sensor
- DR-18D Checking Throttle Position Sensor
- DR-18E Sensor Calibration MAP Sensor
- DR-18F Sensor Calibration MAP Sensor
- DR-18G Sensor Calibrations-Charge Temperature Sensor
- DR-19 Checking Secondary Ignition System
- DR-20A Checking Basic Ignition Timing
- DR-20B Checking Spark Advance
- DR-21A Checking Fuel Supply & Return System
- DR-21B Checking For Low Fuel Pressure
- DR-21C Checking For Low Fuel Pressure
- DR-21D Checking For High Fuel Pressure
- DR-22 Throttle Body Minimum Air Flow
- DR-23 Driveability Problems Not Related to Engine Control
- Charging System (CH) Tests
- CH-1A Checking Charging System For Fault Codes
- CH-1B Checking For Intermittent Failures
- CH-2A Sensor Calibration-Battery Temperature
- CH-2B Charging System Operating Voltage
- CH-3 Fault Code 16 Battery Voltage Sensing Circuit
- CH-4A Fault Code 46 or 41-46 Alternator Field
- CH-4B Alternator Field Control Wire
- CH-4C Charging System Control of the SMEC
- CH-5A Fault Code 41 or 41-47 or 47 Alternator Field
- CH-5B Alternator Field Control Wire
- CH-5C Charging System Control Circuit
- CH-5D Charging System Control Wire
- Heating and Air Conditioning
- Speed Control (SC) Tests
- SC-1A Check Speed Control System For Fault Codes
- SC-1B Switch Inputs to the SMEC
- SC-2A Fault Code 34-Speed Control Servo (Vacuum)
- SC-2B Fault Code 34 Speed Control Vent Solenoid
- SC-2C Vent Solenoid Wire to the SMEC
- SC-2D Vent Solenoid Circuit In the SMEC
- SC-2E Vacuum Solenoid Control Wire
- SC-2E Vacuum Solenoid Control Wire For an Open
- SC-2F Vacuum Solenoid Circuit to the SMEC
- SC-2G Power Supply to Speed Control Servo
- SC-2H Power Supply Through the Brake Switch
- SC-2I Power Supply to the Brake Switch
- SC-3A Speed Control Servo Ground Circuit
- SC-3B Checking Brake Switch Input to the SMEC
- SC-3C Brake Switch Input Circuit to the SMEC
- SC-3D Park/Neutral Switch Input to the SMEC
- SC-3E Park/Neutral Switch Input Circuit to the SMEC
- SC-3F Checking the Speed Control Servo Operation
- SC-4A System Power Supply Circuit
- SC-4B System Power Supply Circuit
- SC-4C Power Supply Circuit (X32)
- SC-5A Speed Control System Set Circuit
- SC-5B Speed Control System Set Circuit
- SC-6A Speed Control System Resume Circuit
- SC-6B Speed Control System Resume Circuit (X33)