A L L Diagnostic Trouble Codes ( DTC )
Testing and Inspection- Diagnostic Trouble Code Descriptions
- Manufacturer Code Charts
- Code to Test Chart
- Fault Code (FC) Tests
- FC-1A Checking System For Faults - START HERE -
- FC-2A No Vehicle Speed Sensor Signal
- FC-2B No Vehicle Speed Sensor Signal
- FC-2C No Vehicle Speed Sensor Signal
- FC-3A Intake Air Temp Sensor Voltage High
- FC-4A Intake Air Temp Sensor Voltage High
- FC-5A Throttle Position Sensor Voltage High
- FC-6A Throttle Position Sensor Voltage Low
- FC-7A Engine Coolant Temperature Sensor Voltage Too High
- FC-8A Engine Coolant Temperature Sensor Voltage Too Low
- FC-9A A/C Clutch Relay Control Circuit
- FC-10A Trans Overdrive Solenoid Circuit
- FC-11A No Crank Reference Signal at PCM
- FC-11B No Crank Reference Signal at PCM
- FC-12A Auto Shutdown (ASD) Relay Control Circuit
- FC-13A No Auto Shutdown (ASD) Relay Volt Sense at PCM
- FC-14A PCM SRI Miles Not Stored/EEPROM Write Denied
- Antilock Brakes / Traction Control Systems
- Test - RAM Read/Write (Code 71)
- Test - ROM Checksum (Code 72)
- Test - Watchdog (Code 73)
- Test 1A - Checking the System For Diagnostic Trouble Codes
- Test 1B - Checking the System For Diagnostic Trouble Codes
- Test 2A - Right Front Sensor Open (Code 21)
- Test 3A - No Signal From Right Front Sensor (Code 22)
- Test 4A - Intermittent Signal From Right Front Sensor (Code 23)
- Test 5A - Left Front Sensor Open (Code 25)
- Test 6A - No Signal From Left Front Sensor (Code 26)
- Test 7A - Intermittent Signal From Left Front Sensor (Code 27)
- Test 8A - Rear Sensor Open (Code 35)
- Test 10A - Intermittent Signal From Rear Sensor (Code 37)
- Test 11A - Wheel Speed Mismatch (Code 38)
- Test 12A - Right Front Isolation Solenoid Open (Code 41)
- Test 14A - Right Front Isolation Solenoid Shorted (Code 43)
- Test 15A - Right Front Dump Solenoid Shorted (Code 44)
- Test 16A - Left Front Isolation Solenoid Open (Code 44)
- Test 17A - Left Front Dump Solenoid Open (Code 46)
- Test 18A - Left Front Isolation Solenoid Shorted (Code 47)
- Test 19A - Left Front Dump Solenoid Shorted (Code 48)
- Test 20A - Rear Isolation Solenoid Open (Code 51)
- Test 21A - Rear Dump Solenoid Open (Code 52)
- Test 22A - Rear Isolation Solenoid Shorted (Code 53)
- Test 23A - Rear Dump Solenoid Shorted (Code 54)
- Test 24A - Right Front Reset Switch Closed (Code 61)
- Test 25A - Left Front Reset Switch Closed (Code 62)
- Test 26A - Rear Reset Switch Closed (Code 63)
- Test 27A - Main Relay Open (Code 65)
- Test 28A - Main Relay Shorted (Code 66)
- Test 28B - Main Relay Shorted (Code 66)
- Test 29A - Pump Motor Circuit Open (Code 67)
- Test 30A - Pump Motor Stalled (Code 68)
- Test 31A - Foundation Brake (Code 78)
- Test 32A - Brake Switch Circuit (Code 81)
- Test 33A - Red Brake Warning Lamp Circuit (Code 88)
- Test 34A - Antilock Warning Lamp Circuit (Code 89)
- Test 35A - Controller/Vehicle Mismatch (Code 70)
- Test 36 - DRB "No Response" Message
- Test 37A - Blank DRB Display
- Test 38A - Wheel Speed Sensor Harness Visual Inspection
- Test 39A - CAB Failure Verification Test
- Test 40A - 4WD Sense Circuit
- Charging System (CH) Tests
- CH-1A Testing Battery
- CH-1B Testing Battery
- CH-2A Repair Fault Alt Field Not Switching Properly
- CH-2B Repair Fault Alt Field Not Switching Properly
- CH-2C Repair Checking Field Control For Shorts
- CH-3A Repair Fault Charge System Voltage Too Low
- CH-4A Repair Fault Charge System Voltage Too High
- CH-4B Checking Engine Controller Regulating Circuit
- Speed Control (SP) Tests
- SP-1A Reading Fault Codes
- SP-2A Servo Power/ Ground Open Circuit Test
- SP-2B Speed Control Vacuum Solenoid Control Test
- SP-2C Speed Control Vent Solenoid Circuit Test
- SP-3A "No Vehicle Speed Signal" Fault Test
- SP-3B "No Vehicle Speed Signal" Fault Test
- SP-3C "No Vehicle Speed Signal" Fault Test
- SP-4A Speed Control Switches Test
- SP-5A Speed Control Switches Test
- SP-5B Speed Control Switch Circuit Short Test
- SP-5C Switch Short to Ground Test
- SP-5D Switch Circuit Open Test
- SP-6A Speed Control Resume Switch Test
- SP-6B Speed Control Resume Switch Test
- SP-7A Speed Control Set Switch Circuit Test
- SP-7B Speed Control Set Switch Circuit Test
- SP-8A Speed Control Set Switch Circuit Test
- SP-9A Speed Control Switch Circuit Test
- SP-9B Clockspring Circuit Short Test
- SP-9C Testing Clockspring Circuit For Open
- SP-10A Speed Control Switch Circuit Short Test
- SP-11A Brake Switch Circuit Open Test
- SP-11B Brake Switch Circuit Short Test
- SP-12A Speed Control Servo Operation Test
- SP-12B Vacuum to Servo Test
- SP-13A Park/Neutral Safety Switch Test
- SP-14A Checking For Intermittent Faults
- Verification Tests