diagnostic trouble codes: transfer case motor
Contents
1. 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully When to clear a DTC The diagnostic trouble code DTC should only be erased once the voltage concern has been corrected How to clear a DTC 1 The Transfer Case Control Module TCCM will clear the DTC once the initial problem has been fixed A hard DTC will clear once the vehicle has run through one hundred 100 start cycles and detects no faults 3 To clear the DTC manually you will need a vehicle diagnostic scanner Scan tool Once the DTC has been erased go back into the vehicle system and verify that the DTC has been erased and that the system is performing properly Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage o2. CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully DTC C0310 Description DTC C0310 will be set when the Transfer Case Control Module TCCM determines an open circuit in motor control A or B or an open motor circuit What causes DTC C0310 DTC C0310 will set when the Transfer Case Control Module detects a variation in voltage going to both the Motor Control Circuit A or B When the module is calling for a low voltage value and there is a high voltage return DTC C0310 will be activated turning on the Service 4WD light and disabling the shifting feature of transfer case motor How to access the diagnostic trouble code DTC Once there has been a DTC set the vehicle will either set a Service 4WD light or the lights on the 4x4 switch will flash and or stay lit To access the DTCs you will need to hook up a vehicle diagnostic scanner utilizing the service port under the driver side portion of the dash Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations
3. in whole or in part without prior written approval
4. to access the diagnostic trouble code DTC Once there has been a DTC set the vehicle will either set a Service 4WD light or the lights on the 4x4 switch will flash and or stay lit To access the DTCs you will need to hook up a vehicle diagnostic scanner utilizing the service port under the driver side portion of the dash Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommend
5. 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully 2005 99 S10 Blazer Pickup 15 Sonoma 2002 1998 Suburban Tahoe Yukon 2002 1999 Sierra Silverado Escalade 1999 98 K1500 K2500 Pickups 2001 1999 Bravada Jimmy 2002 Avalanche DTC C0308 Description DTC C0308 will be set when the Transfer Case Control Module TCCM determines a short to ground in motor control circuit A or B What causes DTC C0308 DTC C0308 will set when the Transfer Case Control Module detects a variation in supply voltage going to both the Motor Control Circuit A or B DTC C0308 will also activate if the feedback voltage is excessively low on Motor Control Circuits A or B Once DTC C0308 has been activated all of the 4WD shifter will be inoperative and will cause the SERVICE 4WD light to turn on How to access the diagnostic trouble code DTC Once there has been a DTC set the vehicle will either set a Service 4WD light or the lights on the 4x4 switch will flash and or stay lit To access the DTCs you will need to hook up a vehicle diagnostic scanner utili
6. Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully When to clear a DTC The diagnostic trouble code DTC should only be erased once the voltage concern has been corrected or the mechanical problem has been addressed How to clear a DTC 1 The Transfer Case Control Module TCCM will clear the DTC once the initial problem has been fixed A hard DTC will clear
7. ce requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully DTC C0374 General 4WD Failure Description DTC C0374 will be set when the Transfer Case Control Module TCCM detects rear wheel slippage Once the TCCM attempts to apply torque to the front wheels and cannot DTC C0374 will be set When DTC C0374 is activated you will not be able to use your AUTO 4WD The SERVICE 4WD light will remain on until you re start your vehicle What causes DTC C0374 DTC C0374 will set when the Transfer Case Control Module detects a variation in the front drive shaft and rear drive shaft speed sensor and is not able to engage the front differential after ten 10 unsuccessful attempts How
8. ce the voltage concern has been corrected or the mechanical problem has been addressed How to clear a DTC 1 The Transfer Case Control Module TCCM will clear the DTC once the initial problem has been fixed A hard DTC will clear once the vehicle has run through one hundred 100 start cycles and detects no faults 3 To clear the DTC manually you will need a vehicle diagnostic scanner Scan tool Once the DTC has been erased go back into the vehicle system and verify that the DTC has been erased and that the system is performing properly Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR
9. d that the system is performing properly Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully DTC C0324 Transfer Case Lock Solenoid Description DTC C0324 will be set when the Transfer Case Co
10. ed that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully When to clear a DTC The diagnostic trouble code DTC should only be erased once the voltage concern has been corrected or the mechanical problem has been addressed How to clear a DTC 1 The Transfer Case Control Module TCCM will clear the DTC once the initial problem has been fixed A hard DTC will clear once the vehicle has run through one hundred 100 start cycles and detects no faults 3 To clear the DTC manually you will need a vehicle diagnostic scanner Scan tool Once the DTC has been erased go back into the vehicle system and verify that the DTC has been erased and that the system is performing properly Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure
11. h and or stay lit To access the DTCs you will need to hook up a vehicle diagnostic scanner utilizing the service port under the driver side portion of the dash Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions ca
12. he shift shaft assembly could develop lateral or vertical movement and cause the Transfer Case Encoder to detect a false reading setting a trouble code How to access the diagnostic trouble code DTC Once there has been a DTC set the vehicle will either set a Service 4WD light or the lights on the 4x4 switch will flash and or stay lit To access the DTCs you will need to hook up a vehicle diagnostic scanner utilizing the service port under the driver side portion of the dash Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual f
13. k the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully DTC C0323 Transfer Case Lock Solenoid Description DTC C0323 will be set when the Transfer Case Control Module TCCM finds a fault in an open lock solenoid circuit or the open lock supply What causes DTC C0323 1 The Transfer Case Control Module TCCM will attempt to deactivate the transfer case lock solenoid by opening the ground circuit The Transfer Case Control Module TCCM is unable to deactivate the transfer case lock solenoid The Transfer Case Lock Solenoid output is producing low return voltage when high voltage is needed How to access the diagnostic trouble code DTC Once there has been a DTC set the vehicle will either set a Service 4WD light or the lights on the 4x4 switch will flash and or stay lit To access the DTCs you will need to hook up a vehicle diagnostic scanner utilizing the service port under the driver side portion of the dash Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in pr
14. ntrol Module TCCM finds a fault in the transfer case lock solenoid coil or the transfer case lock control is shorted to twelve volts 12v What causes DTC C0324 The transfer case lock return voltage is producing high voltage when low voltage is needed How to access the diagnostic trouble code DTC Once there has been a DTC set the vehicle will either set a Service 4WD light or the lights on the 4x4 switch will flash and or stay lit To access the DTCs you will need to hook up a vehicle diagnostic scanner utilizing the service port under the driver side portion of the dash Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval
15. once the vehicle has run through one hundred 100 start cycles and detects no faults 3 To clear the DTC manually you will need a vehicle diagnostic scanner Scan tool Once the DTC has been erased go back into the vehicle system and verify that the DTC has been erased and that the system is performing properly Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you see
16. operty damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully When to clear a DTC The diagnostic trouble code DTC should only be erased once the voltage concern has been corrected How to clear a DTC 1 The Transfer Case Control Module TCCM will clear the DTC once the initial problem has been fixed A hard DTC will clear once the vehicle has run through one hundred 100 start cycles and detects no faults 3 To clear the DTC manually you will need a vehicle diagnostic scanner Scan tool Once the DTC has been erased go back into the vehicle system and verify that the DTC has been erased an
17. or your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully When to clear a DTC The diagnostic trouble code DTC should only be erased once the voltage concern has been corrected or the mechanical problem has been addressed How to clear a DTC 1 The Transfer Case Control Module TCCM will clear the DTC once the initial problem has been fixed A hard DTC will clear once the vehicle has run through one hundred 100 start cycles and detects no faults 3 To clear the DTC manually you will need a vehicle diagnostic scanner Scan tool Once the DTC has been erased go back into the vehicle system and verify that the DTC has been erased and that the system is performing properly Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performan
18. r personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully DTC C0327 Motor A or B Circuit Failure Description DTC C0327 will be set when the Transfer Case Control Module TCCM finds an electrical fault in the Transfer Case Encoder Circuit What causes DTC C0327 DTC C0327 will set when the Transfer Case Control Module detects a variation in the specified voltage for the Transfer Case Encoder circuit Another possible cause for DTC C0327 could be a mechanical concern within the Transfer Case Shift assembly The Transfer Case encoder detects the position of the shift shaft assembly on the Transfer Case Over time t
19. refully When to clear a DTC The diagnostic trouble code DTC should only be erased once the voltage concern has been corrected or the mechanical problem has been addressed How to clear a DTC 1 The Transfer Case Control Module TCCM will clear the DTC once the initial problem has been fixed A hard DTC will clear once the vehicle has run through one hundred 100 start cycles and detects no faults 3 To clear the DTC manually you will need a vehicle diagnostic scanner Scan tool Once the DTC has been erased go back into the vehicle system and verify that the DTC has been erased and that the system is performing properly Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions
20. that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully DTC C0387 Transfer Case Shift Failure Description DTC C0387 will be set when the Transfer Case Control Module TCCM determines the Transfer case is unable to successfully shift to a requested mode or gear What causes DTC C0387 DTC C0387 will set when one of the following occur e the Transfer Case Control Module TCCM determines the transfer case motor has existing circuit faults the Transfer case motor has attempted to shift into a requested mode or gear and is unable to find it s specified location the TCCM has determined a failure and has gone into a default gear which could be 4HI or 4LO How to access the diagnostic trouble code DTC Once there has been a DTC set the vehicle will either set a Service 4WD light or the lights on the 4x4 switch will flas
21. zing the service port under the driver side portion of the dash Disclaimer Even though every attempt is made to ensure this information is complete and accurate it is impossible to account for all possible circumstances or situations Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do Automobiles can be hazardous to work on be sure to take all necessary safety precautions Failure to do so may result in property damage or personal injury Certain motor vehicle standards and performance requirements may apply to your motor vehicle such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature 2012 Dorman Products Inc No reproductions in whole or in part without prior written approval 600 901 DIAGNOSTIC TROUBLE CODES TRANSHR CASE MOTOR ATTENTION Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part If you do not have a service manual or lack the skill to install this part it is recommended that you seek the services of a qualified technician Pay special attention to all cautions and warnings included in the shop manual Read and follow all instructions carefully When to clear a DTC The diagnostic trouble code DTC should only be erased on
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