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 Circuit to SMEC
- DR-1G A/C Push Button Switch Input Circuit to SMEC
- DR-1H Checking 5 Volt Supply to MAP Sensor
- DR-1I Automatic Idle Speed Motor Operation
- DR-1J AIS Motor Signal at Engine Control Module
- DR-1K AIS Motor at Engine Module 60-Way Connector
- DR-1L Checking AIS Motor SMEC 60-Way Connector
- DR-1M AIS Motor Signal at 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 Check MAP Sensor Signal Circuit to SMEC
- 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 Circuit to SMEC For Open
- DR-3C Speed Sensor Circuit to SMEC For Open
- DR-4A Fault Code 21-Oxygen Sensor Circuit
- DR-4B Checking Oxygen Sensor Circuit to SMEC
- DR-5A Fault Code 22-Coolant Sensor Circuit
- DR-5B Coolant Sensor Circuit to SMEC
- DR-5C Coolant Sensor Wires to SMEC
- DR-6A Fault Code 23-Charge Temperature Sensor Turbo II
- DR-6B Charge Temperature Sensor Circuit to SMEC
- DR-6C Charge Temperature Sensor Wire to SMEC
- DR-7A Fault Code 24 Throttle Position Sensor Circuit
- DR-7B Throttle Position Sensor Signal to SMEC
- DR-7C Throttle Position Sensor Wires to SMEC
- DR-7D Check 5 Volt Supply to Throttle Position Sensor
- DR-8A Fault Code 25 AIS Motor Circuit For A Short
- DR-8B Check AIS Motor Control Wires For A Short
- DR-8C 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 Checking Throttle Position Sensor
- DR-16C Checking Throttle Position Sensor
- DR-16D Checking Throttle Position Sensor
- DR-16E Checking MAP Sensor
- DR-16F Checking MAP Sensor
- DR-16G Charge Temperature Sensor (Turbo II)
- DR-17 Checking For Fuel Fouled Spark Plugs
- DR-18A Engine Coolant Temperature Sensor
- DR-18B Checking 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 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
- Airbag System
- 1 System Function
- 2 No Response Message on DRBII
- 3 Fault Messages
- 4 Repair Required For "Safing Sensor Open" Fault
- 5 Required For "Two Front Sensors Open" Fault
- 6 Required For "Squib (Initiator) Open" Fault
- 7 Required For "Squib (Initiator) Short" Fault
- 8 Required "Safing Sensor Short" Fault
- 9 Required For "Front Sensor Short" Fault
- 10 Required For "One Front Sensor Open" Fault
- 11 Required For "Low Stored Energy" Fault
- 12 Required For "Ignition 2 (Run Only) Low" Fault
- 13 Required For "Chassis Ground Open" Fault
- 14 Required For "Warning Lamp Open" Fault
- 15 Required For "Ignition 1 (Run/Start) Low" Fault
- 16 Required For "Diagnostic Module" Fault
- 17 System Check
- Antilock Brakes / Traction Control Systems
- Test 1A - Reading Fault Messages
- Test 2A - CAB Fault Test
- Test 2A - Testing Blank DRB II Message Screen
- Test 3 - Modulator Fault
- Test 3A - DRB "No Response" Message
- Test 4 - Antilock Lamp Fault
- Test 4 - Solenoid Undervoltage
- Test 5 - Antilock Lamp Relay Fault
- Test 5 - System Relay Fault
- Test 6 - Pump/Motor Fault
- Test 6A - CAB Fault
- Test 7 - Antilock Lamp Fault
- Test 7A - Excess Decay Valve Fault
- Test 8 - Antilock Lamp Relay Fault
- Test 8A - Left Front Wheel Speed Sensor Continuity Fault
- Test 9 - Right Rear Wheel Speed Sensor Continuity Fault
- Test 9A - Left Front Wheel Speed Sensor
- Test 10 - Left Rear Wheel Speed Sensor Continuity Fault
- Test 11 - Right Front Wheel Speed Sensor Continuity Fault
- Test 11A - Left Rear Wheel Speed Sensor Fault
- Test 12 - Modulator Fault
- Test 12A - Left Front Wheel Speed Sensor
- Test 13A - Right Rear Wheel Speed Sensor
- Test 13A - Stop Lamp Switch Input Test
- Test 14 - Pump Motor Fault
- Test 14A - Left Rear Wheel Speed Sensor
- Test 15 - Red Brake Warning Lamp Input Test
- Test 15A - Right Front Wheel Speed Sensor
- Test 16A - Left Front Wheel Speed Sensor Fault
- Test 16A - Right Front Wheel Speed Sensor Continuity Fault
- Test 17A - Excess Decay Valve Fault
- Test 17A - Right Front Wheel Speed Sensor
- Test 18 - Red Brake Warning Lamp Input Test
- Test 18A - Right Rear Wheel Speed Sensor Continuity Fault
- Test 19A - Right Rear Wheel Speed Sensor Fault
- Test 19A - Stop Lamp Switch Input Test
- Test 20 - Solenoid Undervoltage Fault
- Test 20A - System Verification Test
- Test 21 - System Relay Fault
- 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-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
- SC-6B Speed Control System Resume Circuit (X33)
- Speed Control (SP) Tests
- Verification Tests