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-2A "Slow Change In Idle MAP Signal"
 - DR-3A Repairing "No MAP Change From Start to Run" Fault
 - DR-4A Repairing "MAP Voltage Too Low" Fault
 - DR-5A Repairing MAP "Sensor Voltage Too High" Fault
 - DR-6A "No Vehicle Speed Signal"
 - DR-7A Repairing "O2 Sensor Signal Stays at Center" Fault
 - DR-8A Repairing "Oxygen Sensor Signal Over 12 Volts" Fault
 - DR-9A Repairing "Coolant Sensor Voltage Too High" Fault
 - DR-10A Repairing "Coolant Sensor Voltage Too Low" Fault
 - DR-11A Repairing "Throttle Body Temp Voltage High" Fault
 - DR-12A Repairing "Throttle Body Temp Voltage Low" Fault
 - DR-13A Repairing "Throttle POS. Sensor Voltage Hi" Fault
 - DR-14A Repairing "Throttle POS. Sensor Voltage Low" Fault
 - DR-15A Repairing "Auto Idle Speed Motor Circuits" Fault
 - DR-16A Repairing "Purge Solenoid Circuit" Fault
 - DR-17A Repairing "EGR Solenoid Circuit" Fault
 - DR-18A Repairing "EGR System Failure" Fault
 - DR-18B Repairing "EGR System Failure" Fault
 - DR-18C Repairing "EGR System Failure" Fault
 - DR-21A Repairing "A/C Clutch Relay Circuit" Fault
 - DR-24A Repairing "Radiator Fan Relay Circuit" Fault
 - DR-26A Repairing "Radiator Fan Circuit" Fault
 - DR-28A Repairing "Torque Converter Lockup SOL CKT" Fault
 - DR-29A Repairing "SBEC Failure EEPROM Write Denied" Fault
 - DR-29A Repairing "SBEC Failure EMR Miles Not Stored" Fault
 - DR-30A Checking Secondary Ignition & Timing
 - DR-31A Checking Fuel Pressure
 - DR-31B Checking Fuel Pressure
 - DR-32A Checking Coolant & TPS Calibration
 - DR-33A Checking MAP Sensor Calibration
 - DR-34A Checking Oxygen Sensor Switching
 - DR-34B Checking Oxygen Sensor Switching
 - DR-35A Checking Idle Speed Motor Operation
 - DR-35B Checking Idle Speed Motor Operation
 - DR-35C Checking Idle Speed Motor Operation
 - DR-35D Checking Idle Speed Motor Operation
 - DR-35E Checking Idle Speed Motor Operation
 - DR-36A Checking Park/Neutral Switch Input
 - DR-37A Checking SBEC Ground & Power Circuits
 - DR-38A Checking EGR Operation (Federal)
 - DR-38B Checking EGR Operation (Federal)
 - DR-38C Checking EGR Operation (Federal)
 - DR-39A Checking Engine Vacuum
 - DR-40A Checking Minimum Idle Air Flow
 - DR-41A No Fault Code Mechanical Test
 - DR-42A Intermittent Test For Solenoids & Relays
 - DR-43A Intermittent Test For Voltage Sensor
 - DR-43B Intermittent Test For MAP Sensor Change
 - DR-44A Intermittent Test For Idle Motor Circuits
 - DR-45A Intermittent Test For Injector Circuits
 
 - Airbag System
- 1A System Function
 - 1B System Function
 - 2A No Response Message on DRBII
 - 2B No Response Message on DRBII
 - 3A Airbag Module Codes
 - 4A ASDM Replacement
 - 5A Front Sensors Open Code
 - 5B Front Sensors Open Code
 - 6A Squib Open Circuit
 - 7A Required For "Squib (Initiator) Short" Code
 - 8A Required "Safing Sensor Short" Fault
 - 9A Front Sensor Short Code
 - 9B Front Sensor Short Code
 - 9C Front Sensor Short Code
 - 10A Front Sensor Open Code
 - 11A Low Stored Energy Code
 - 11B Low Stored Energy
 - 12A Ignition Run Low Code
 - 12B Low Stored Energy Code
 - 13A For "Warning Lamp Open" Code
 - 14A For "Warning Lamp Short" Code
 - 15A Ignition Run/Start Low Code
 - 15B Ignition Run/Start Low Code
 
 - 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
 
 - Automatic Door Lock System
 - Body Control Module
- Pre-Diagnostic 1A Identifying System Problems
 - Compass/Temperature Module
 - Courtesy Lamp System
 - Door Ajar System
 - Electronic Instument Cluster
- 32A Electronic Cluster Diagnostics
 - 32B Repairing Electronic Cluster Power Up Upon Entry
 - 33A Electronic Cluster Fault Codes
 - 34A Elec. Cluster Problems Not Covered By Fault Codes
 - 34B Electronic Cluster Odometer Failure
 - 34C Electronic Cluster Switch Test
 - 35A Identifying Faulty Gauge
 - 36A Repairing Temperature Gauge Problems
 - 37A Identifying Faulty Warning Lamp or Indicator
 - 37B Identifying Faulty Warning Lamp Condition
 - 38A Repairing Seat Belt Warning Lamp Problem
 - 39A Repairing Brake Warn. Lamp Problem/Park Brake Switch
 - 39B Brake Warn Lamp Problem/Press Sw/Ign Sw Bulb Check
 - 39C Brake Warn Lamp Problem/Press SW/Ign SW Bulb Check
 - 40A Dimming Interior Displays
 - 40B Dimming Interior Displays
 - 40C Dimming Interior Displays
 - 40D Dimming Interior Displays
 - 40E Dimming Interior Displays
 - 40F Dimming Interior Displays
 - 40G Dimming Interior Displays
 - 40H Dimming Interior Displays
 
 - Fuel Level Sending Unit
 - Headlamp Door System
- 52A Diagnosing Headlamp Doors System
 - 52B Diagnosing Headlamp Doors System
 - 53A Checking Body Controller Output and Power Supply
 - 53B Checking Headlamp Door Motor and Wiring
 - 53C Checking Body Controller Output For Short
 - 53D Repairing Motor Wiring For Open
 - 54A Checking Body Controller Output and Power Supply
 - 55A Headlamp Doors Will Not Open For Flash to Pass
 - 56A Headlamp Doors Do Not Operate By Headlamp Switch
 
 - Headlamp Time Delay System
 - Illuminated Entry System
 - Intermittent Wiper System
 - Key-In Lamp System
 - Mechanical Cluster Warning Lamps
 - Oil Pressure Sending Unit
 - Vehicle Theft Alarm
- 41A Diagnosing Vehicle Theft Alarm
 - 41B Diagnosing Vehicle Theft Alarm Unarm Function
 - 42A Diagnosing Vehicle Theft Alarm Ignition Input
 - 42B Diagnosing Vehicle Theft Alarm Ignition Input
 - 43A Diagnosing Vehicle Theft Alarm Ign Run/ACC Circuit
 - 43B Diagnosing Vehicle Theft Alarm Ignition Input
 - 44A Diagnosing Trunk Key Cylinder Sense Switch/Horn
 - 44B Diagnosing Trunk Key Cylinder Sense Switch/Horn
 - 44C Diagnosing Horn Circuit
 - 45A Diagnosing Vehicle Theft Alarm Indicator Lamp
 - 45B Diagnosing Vehicle Theft Alarm Indicator Lamp
 - 46A Diagnosing Vehicle Theft Alarm Lamp Circuit
 - 47A Diagnosing Hood Ajar Circuit
 - 47B Diagnosing Hood Ajar Circuit
 - 48A Diagnosing Door Lock to the Vehicle Theft Alarm
 - 49A Diagnosing the Unlock Input
 - 50A Diagnosing the L/F Door Key Cylinder Switch (Unarm)
 - 50B Diagnosing Door Key Cylinder Switch (Unarm)
 - 51A Diagnosing R/F Door Key Cylinder Switch (Unarm)
 - 51B Diagnosing Door Key Cylinder Switch (Unarm)
 
 
 - 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 Repairing Fault Alt Field Not Switching Properly
 - 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
 - CH-5A Check For Intermittent Problems
 
 - EVIC Panel Monitor
- 2A Repairing Blank Message Screen on EVIC Panel
 - 2B Repairing Blank Message Screen on EVIC Panel
 - 3A EVIC Panel Messages
 - 4A Brake Lamp Set-Up Test/Faulty Brake Lamp Out Message
 - 4B Repairing Missing Brake Lamp Out Message
 - 5A Right Brake Lamp Out
 - 6A Right Brake Lamp Out
 - 7A Left Brake Lamp Out
 - 8A Left Brake Lamp Out
 - 9A Repairing Faulty Coolant Level Low Message
 - 10A Repairing Faulty Low Oil Level Message
 - 11A Engine Temp High or Engine Temp Critical
 - 12A Exterior Lights on
 - 13A Repairing Faulty Fasten Seat Belt Message
 - 14A Headlamp System/Right Headlamp Out
 - 14B Left Headlamp Out
 - 15A Key In Ignition
 - 16A Low Brake Fluid
 - 17A Headlamps Out Message But Headlamps Operate
 - 18A Park Brake Engaged
 - 18B Park Brake Engaged
 - 19A Tail Lamp Problems
 - 20A Right Tail Lamp Out
 - 21A Left Tail Lamp Out
 - 22A Trunk Ajar
 - 23A Washer Fluid Low
 - 24A Turn Signal on
 - 24B Turn Signal on
 - 25A Tail Lamp Out
 - 26A Both Headlamps Out
 - 26B Headlamp Power Feed
 - 26C Headlamp Power Feed
 - 27A All Brake Lamps Out
 - 27B All Brake Lamps Out
 - 28A Right Side Brake Lamps Out
 - 29A Left Side Brake Lamps Out
 - 30A All Tail Lamps Out
 - 30B All Tail Lamps Out
 - 30C All Tail Lamps Out
 - 30D All Tail Lamps Out (Checking Left Pod Switch)
 - 31A EVIC Panel Switch Test
 - 31B EVIC Panel Switch Test
 
 - Speed Control (SP) Tests
- SP-1A Reading Fault Codes
 - SP-2A Repairing Fault "Speed Control Solenoid Circuits"
 - SP-2B Repairing Fault "Speed Control Solenoid Circuits"
 - SP-2C Repairing Fault "Speed Control Solenoid Circuits"
 - SP-3A Repairing Fault Code "No Vehicle Speed Signal"
 - SP-3B Repairing Fault Code "No Vehicle Speed Signal"
 - SP-4A Checking Speed Control Switches
 - SP-5A Checking On/Off Switch
 - SP-5B Checking On/Off Switch
 - SP-7A Checking Resume Switch
 - SP-9A Checking Set Switch
 - SP-11A Checking Brake Switch
 - SP-11B Checking Brake Switch
 - SP-12A Checking Neutral Safety Switch
 - SP-13A Checking Speed Control Servo Operation
 - SP-13B Checking Speed Control Servo Operation
 - SP-14A Checking For Intermittent Faults
 - SP-15A Reading Faults
 - SP-16A Repairing Fault "Speed Control Power Relay Circuit"
 - SP-17A Repairing Fault "No Vehicle Speed Signal"
 - SP-18A Repairing Fault "Speed Control Solenoid Circuit"
 - SP-18B Repairing Fault "Speed Control Solenoid Circuit"
 - SP-18C Repairing Fault "Speed Control Solenoid Circuit"
 - SP-19A Checking Switches
 - SP-20A Checking Speed Control Switches
 - SP-20B Checking Speed Control Switches
 - SP-21A Checking Brake Switch
 - SP-21B Checking Brake Switch
 - SP-22A Checking Neutral Safety Switch
 
 - Traveler System
 - Vehicle Communication Tests
- 1A General Failure Messages
 - 2A Testing For RAM Failure
 - 3A Testing For Cartridge Error Message
 - 4A Testing for Keypad Failure
 - 5A Testing for High Battery Message
 - 6A Testing for Low Battery Message
 - 7A Bus Failure Messages
 - 30A Testing For Short to Battery
 - 30B Testing For Short to Battery
 - 30C Testing For Short to Battery
 - 31A Testing For Short to 5 Volts
 - 32A Testing For Short to Ground
 - 33A Testing For Bus + & - Shorted Together
 - 34A Testing For No Termination
 - 35A Testing For Bus Bias Level Too Low
 - 35B Testing For Bus Bias Level Too Low
 - 36A Testing For Bus Bias Level Too High
 - 36B Testing For Bus Bias Level Too High
 - 37A Testing For No Bus Bias
 - 38A Testing For Bus + Open
 - 39A Testing For Bus - Open
 - 40A Testing For Bus + & - Bus Open
 - 41A Testing For Not Receiving Bus Messages Correctly
 - 42A No Response Messages
 - 43A Testing For Elec Instrument Cluster No Response
 - 43B Testing For Elec Instrument Cluster No Response
 - 43C Testing For Elec Instrument Cluster No Response
 - 44A Testing For Engine Node No Response
 - 45A Testing For EVIC Panel No Response
 - 45B Testing For EVIC Panel No Response
 - 45C Testing For EVIC Panel No Response
 - 46A Testing For Vehicle Theft Alarm No Response
 - 47A Testing For A604 Transaxle Controller No Response
 - 48A Testing For Compass/Temperature Module No Response
 - 49A Testing For Body Controller No Response
 - 49B Testing For Body Controller No Response
 - 49C Testing For Body Controller No Response
 - 50A Testing For Engine Controller No Response
 - 51A Testing For Traveller No Response
 - 51B Testing For Traveller No Response
 - 51C Testing For Traveller No Response
 - 52A Testing For Blank DRBII Message Screen
 - 106A Motorized Seat Belt Blank DRBII
 - 107A Motorized Seat Belt No Response
 - 107B Motorized Seat Belt No Response
 - 108A Testing Diag Conn For Gnd/DRB For Proper Operation
 - 109A Testing For No Response on the DRBII Message Screen
 - 109B Testing For No Response on the DRBII Message Screen
 - 110A Testing Bendix ABS System For Blank Message Screen
 - 111A Testing Bendix ABS System For No Response Message
 
 
 - Verification Tests