:  Jan 30, 2008



Overview

The DD295 transfer case is a permanent four-wheel-drive unit, with 50/50 torque distribution to the front and rear driveshafts and is identical for all engine derivatives. For additional information, refer to section 308-07 - Four-Wheel Drive Systems in the workshop manual.

Inspection and Verification

. Verify the customer concern.

. Confirm which, if any, warning lights and/or messages were displayed on the instrument cluster. For a list of messages, refer to the relevant section of the workshop manual.

. Visually inspect for obvious mechanical or electrical faults.

Mechanical Electrical
  • Transfer case
  • Oil leaks
  • Driveshafts
  • Halfshafts
  • Constant velocity (CV) joints
  • Fuse(s)
  • Wiring harness/electrical connectors
  • Controller area network (CAN) circuits
  • Instrument cluster
  • Range change selection switch
  • Transfer case control module

. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

. Use the approved diagnostic system or a scan tool to retrieve any DTCs before moving onto the symptom chart or DTC index.
  Make sure that all DTCs are cleared following rectification.
Make sure that all DTCs are cleared following rectification.

Symptom Chart

Symptom Message Possible causes Action
Loss of drive due to transfer case stuck in neutral and transmission park lock function is inoperative 'PARK LOCK FAILURE APPLY HANDBRAKE'
  • Transfer case control module CAN bus - off bus during range change
  • Transfer case changeover solenoid fault
  • Transfer case motor fault
  • Transfer case internal obstruction
Refer to the Network Communications section of the workshop manual.
Loss of drive -
  • Half shaft failure
  • Driveshaft failure
  • Front or rear axle: differential failure
  • Transfer case center differential failure
Check the condition of the driveshafts, half shafts and CV joints.
Range change inhibited 'TRANSMISSION RANGE CHANGE INOPERATIVE'
  • Transfer case control module has shut down due to thermal overload
  • Transfer case internal obstruction
  • Transfer case changeover solenoid fault
  • Transfer case motor fault
  • Transfer case control module failure
Check for transfer case control module DTCs.
Off road traction reduced 'TRANSMISSION OVER HEAT SLOW DOWN'
  • Center differential temperature is approaching the over heated threshold
Check for over-temperature DTCs.
'TRANSMISSION FAULT – TRACTION REDUCED'
  • Center differential has failed - operating as an open differential
  • Transfer case control module has stopped transmitting on the CAN bus and defaults to open center differential
Check for lost communication and bus off DTCs.

DTC index

:
  Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

Power latch

There are references to "power latch" within the DTC index. This is where the module must be reset by means of a complete power down and power up.

DTC Description Possible causes Action
C1A0196 LED
  • LED circuit short circuit to ground
  • High resistance
Check the LED and circuits. Refer to the electrical guides.
C1A0294 Rotary Encoder Stuck In Intermediate Position
  • Rotary switch detected between detents for more than 1 minute
Check the operation of the rotary switch.
P056000 System Voltage
  • Battery back-up malfunction
  • Battery voltage low
  • Battery ground cable high resistance
  • Battery connections loose/corroded
  • Battery current drain
Check the battery condition and state of charge. Refer to the relevant workshop manual section.
P056100 System Voltage Unstable
  • Battery disconnected and reconnected
  • Battery connections loose/corroded
  • Battery ground cable intermittent: high resistance
  • Battery positive cable intermittent: high resistance
Check the battery condition and state of charge. Refer to the relevant section of the workshop manual.
P056200 System Voltage Low
  • Battery voltage low
  • Battery ground cable: high resistance
  • Battery connections loose/corroded
  • Battery current drain
Check the battery condition and state of charge. Refer to the relevant workshop manual section.
P056300 System Voltage High
  • System boosted from high voltage
  • Battery voltage high
  • Generator over charge condition
Check if the vehicle has been jump-started. Check the battery condition and state of charge. Refer to the relevant workshop manual section.
P060700 Control Module Performance
  • ECM - event information - CPU watch dog
Check the ECM circuits and connectors. Refer to the electrical guides. Clear the DTC. Cycle the ignition, allow power latch and retest. If the DTC resets, suspect the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P063400 PCM / ECM / TCM Internal Temperature A Too High
  • Transfer case motor, driver stage over-temperature deactivation
  • TCCM internal sensor error
Consider atmospheric and customer driving conditions before carrying out any other action. Refer to the electrical guides and check the TCCM circuits. Refer to the warranty policy and procedures manual if a module is suspect.
P064100 Sensor Reference Voltage A Circuit
  • Transfer case motor hall effect sensor supply circuit high resistance
  • Transfer case motor hall effect sensor ground circuit high resistance
  • Transfer case motor hall effect sensor failure
  • Transfer case control module failure
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P064200 Sensor Reference Voltage A Circuit Low
  • Transfer case motor hall effect sensor supply circuit short circuit to ground
  • Transfer case motor hall effect sensor supply circuit high resistance
  • Transfer case motor hall effect sensor failure
  • Transfer case control module failure
Refer to the electrical guides and check the transfer box hall signal circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P064300 Sensor Reference Voltage A Circuit High
  • Transfer case motor hall effect sensor supply circuit short circuit to power
  • Transfer case motor hall effect sensor failure
  • Transfer case control module failure
Refer to the electrical guides and check the transfer box hall signal circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P065200 Sensor Reference Voltage B Circuit Low
  • Gear shift position sensor supply circuit short circuit to ground
  • Gear shift position sensor supply circuit high resistance
  • Gear shift position sensor failure
Refer to the electrical guides and check the gear shift position sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P065300 Sensor Reference Voltage B Circuit High
  • Gear shift position sensor supply circuit short circuit to power
  • Gear shift position sensor failure
Refer to the electrical guides and check the gear shift position sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P066600 PCM/ECM/TCM Internal Temperature Sensor 'A' Circuit
  • Changeover solenoid, driver stage over-temperature deactivation
Check for over-temperature DTCs in other modules. Refer to the warranty policy and procedures manual if a module is suspect.
P069800 Sensor Reference Voltage C Circuit Low
  • Manual transmission output shaft speed sensor circuit short circuit to ground
  • Manual transmission output shaft speed sensor circuit high resistance
  • Manual transmission output shaft speed sensor failure
Refer to the electrical guides and check the output shaft speed sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P069900 Sensor Reference Voltage C Circuit High
  • Manual transmission output shaft speed sensor circuit short circuit to power
  • Manual transmission output shaft speed sensor failure
Refer to the electrical guides and check the output shaft speed sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P070200 Transmission Control System Electrical
  • Unexpected reset
  • Battery short circuit to ground
  • Generator circuit short circuit to ground
  • TCCM supply short to ground
Check for intermittent loss of power or ground of the main power supply circuits to the module. Refer to the electrical guides.
P071200 Transmission fluid temperature sensor 'A' circuit low
  • Transfer case motor temperature sensor circuit short circuit to ground
  • Transfer case motor temperature sensor failure
Check the transfer case motor temperature sensor and circuits. Refer to the electrical guides.
P071300 Transfer case motor temperature sensor A circuit
  • Transfer case motor temperature sensor circuit short circuit to power
  • Transfer case motor temperature sensor circuit high resistance
  • Transfer case motor temperature sensor failure
Check the transfer case motor temperature sensor and circuits. Refer to the electrical guides.
P071500 Turbine/Input Shaft Speed Sensor A Circuit
  • Transmission output speed sensor circuit short circuit to ground
  • Transmission output speed sensor failure
Check the transmission output speed sensor and circuits. Refer to the electrical guides.
P071600 Turbine/Input Shaft Speed Sensor A Circuit Range/Performance
  • Transmission output speed sensor circuit short circuit to ground
  • Transmission output speed sensor failure
Check the transfer case motor temperature sensor and circuits. Refer to the electrical guides.
P071700 Turbine/Input Shaft Speed Sensor A Circuit No Signal
  • Transmission output shaft speed sensor disconnected
  • Transmission output shaft speed sensor circuit short circuit to ground
  • Transmission output shaft speed sensor circuit high resistance
  • Transmission output shaft speed sensor failure
Check the transfer case motor temperature sensor and circuits. Refer to the electrical guides. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P078000 Shift Malfunction
  • Gear shifting blocked (the transfer box motor movement and position does not correspond to the expected values)
Check transfer box motor wiring and transfer box motor hall effect sensor wiring. Check transfer box motor. Refer to the electrical guides.
P080600 Clutch position sensor circuit range/performance
  • Clutch and range change mechanism calibration failure
Calibrate the clutch and range change mechanism using the approved diagnostic system or by the procedure listed in the description and operation. Refer to the relevant section of the workshop manual.
P080700 Clutch position sensor circuit low
  • Transfer case motor hall effect sensor signal circuit short circuit to ground
  • Transfer case motor hall effect sensor failure
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P080800 Clutch position sensor circuit high
  • Transfer case motor hall effect sensor signal circuit short circuit to power
  • Transfer case motor hall effect sensor signal circuit high resistance
  • Transfer case motor hall effect sensor failure
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P082000 Gear Lever X-Y Position Sensor Circuit
  • Gear shift position sensor signal circuit short circuit to ground
  • Gear shift position sensor signal circuit short circuit to power
  • Gear shift position sensor signal circuit high resistance
  • Gear shift position sensor failure
Refer to the electrical guides and check the gearbox position sensor XY axis circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P082600 Up and Down Switch Circuit
  • Transmission High/Low switch activation too long or high and low switches activated at the same time
  • Transmission High/Low switch pressed for more than 255 seconds
  • Switch pack harness wiring short circuit to ground, short circuit to power, high resistance
  • Switch pack failure
  • Transfer case control module failure
Check the transmission High/Low switch operation. Refer to the electrical guides and check the switch pack circuit. Repair/renew as necessary. Refer to the guided diagnostic routine for this code on the approved diagnostic system. Refer to the warranty policy and procedures manual if a module is suspect.
P090000 Clutch actuator circuit/open
  • Transfer case motor circuit high resistance
  • Transfer case motor failure
Refer to the electrical guides and check the transfer case motor circuit. Repair/renew as necessary. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P090200 Clutch actuator circuit
  • Transfer case motor circuit short circuit to ground
  • Transfer case motor circuit high resistance
  • Transfer case motor failure
Refer to the electrical guides and check the transfer case motor circuit. Repair/renew as necessary. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P090300 Clutch actuator circuit
  • Transfer case motor circuit short circuit to power
  • Transfer case motor failure
Refer to the electrical guides and check the transfer case motor circuit. Repair/renew as necessary. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P091500 Gear Shift Position Circuit Range/Performance
  • Gear shift position sensor circuit short circuit to ground
  • Gear shift position sensor circuit high resistance
  • Gear shift position sensor failure
Refer to the electrical guides and check the gear shift position sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P091600 Gear Shift Position Circuit Low
  • Gear shift position sensor circuit short circuit to ground
  • Gear shift position sensor circuit high resistance
  • Gear shift position sensor failure
Refer to the electrical guides and check the gear shift position sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P091700 Gear Shift Position Circuit High
  • Gear shift position sensor circuit short circuit to power
  • Gear shift position sensor ground circuit high resistance
  • Gear shift position sensor failure
Refer to the electrical guides and check the gear shift position sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P173A00 Clutch Actuator Position Sensor Circuit Range/Performance
  • Transfer case motor hall effect sensor signal circuit short circuit to ground
  • Transfer case motor hall effect sensor signal circuit short circuit to power
  • Transfer case motor hall effect sensor signal circuit high resistance
  • Transfer case motor hall effect sensor failure
  • Transfer case control module failure
Refer to the electrical guides and check the transfer case motor hall effect sensor sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P173B00 Clutch Actuator Position Sensor Circuit Low
  • Transfer case motor hall effect sensor signal circuit short circuit to ground
  • Transfer case motor hall effect sensor signal circuit high resistance
  • Transfer case motor hall effect sensor failure
  • Transfer case control module failure
Refer to the electrical guides and check the transfer case motor hall effect sensor sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P173C00 Clutch Actuator Position Sensor Circuit High
  • Transfer case motor hall effect sensor signal circuit short circuit to power
  • Transfer case motor hall effect sensor signal circuit high resistance
  • Transfer case motor hall effect sensor failure
  • Transfer case control module failure
Refer to the electrical guides and check the transfer case motor hall effect sensor sensor circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P173E00 Ignition Key Lock Solenoid Circuit Low
  • Key-lock solenoid circuit short circuit to ground
  • Key-lock solenoid circuit high resistance
  • Key-lock solenoid failure
Refer to the electrical guides and check the Key-lock solenoid circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P173F00 Ignition Key Lock Solenoid Circuit High
  • Key-lock solenoid circuit short circuit to power
  • Key-lock solenoid failure
Refer to the electrical guides and check the key-lock solenoid circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P174A00 Gear Lever X Position Sensor Circuit Low
  • Gear shift X axis position sensor signal circuit short circuit to ground
  • Gear shift position sensor failure
Refer to the electrical guides and check the gearbox position sensor X axis circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P174B00 Gear Lever X Position Sensor Circuit High
  • Gear shift X axis position sensor signal circuit short circuit to power
  • Gear shift X axis position sensor signal circuit high resistance
  • Gear shift position sensor ground circuit high resistance
  • Gear shift position sensor failure
Refer to the electrical guides and check the gearbox position sensor X axis circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P174C00 Gear Lever Y Position Sensor Circuit Low
  • Gear shift Y axis position sensor signal circuit short circuit to ground
  • Gear shift position sensor failure
Refer to the electrical guides and check the gearbox position sensor Y axis circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P174D00 Gear Lever Y Position Sensor Circuit High
  • Gear shift Y axis position sensor signal circuit short circuit to power
  • Gear shift Y axis position sensor signal circuit high resistance
  • Gear shift position sensor ground circuit high resistance
  • Gear shift position sensor failure
Refer to the electrical guides and check the gearbox position sensor Y axis circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P180600 4-Wheel Drive High Indicator Short Circuit To Battery
  • LED circuit short circuit to power
  • Switch pack LED failure
  • Transfer case control module failure
Refer to the electrical guides and check the LED circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P180700 4-Wheel Drive High Indicator Short Circuit To Ground
  • LED circuit short circuit to ground
  • LED circuit high resistance
  • Switch pack LED failure
  • Transfer case control module failure
Refer to the electrical guides and check the LED circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P180800 4-Wheel Drive Low Indicator Circuit Failure
  • LED circuit short circuit to power
  • Switch pack LED failure
  • Transfer case control module failure
Refer to the electrical guides and check the LED circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P181100 4-Wheel Drive Low Indicator Short Circuit To Ground
  • LED circuit short circuit to ground
  • LED circuit high resistance
  • Switch pack LED failure
  • Transfer case control module failure
Refer to the electrical guides and check the LED circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P181B00 Clutch Actuator Changeover Solenoid Low
  • Clutch actuator changeover solenoid circuit short circuit to ground
  • Clutch actuator changeover solenoid circuit high resistance
  • Clutch actuator changeover solenoid failure
  • Transfer case control module failure
Refer to the electrical guides and check the transfer case mode selector solenoid circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P181C00 Clutch Actuator Changeover Solenoid High
  • Clutch actuator changeover solenoid circuit short circuit to power
  • Clutch actuator changeover solenoid failure
  • Transfer case control module failure
Refer to the electrical guides and check the transfer case mode selector solenoid circuit. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P181D00 Clutch Actuator Changeover Solenoid Range/Performance
  • Transfer box motor wiring circuit short to ground or power
  • Transfer box motor hall effect sensor wiring circuit short to ground or power
  • Transfer box motor or solenoid failure
Refer to the electrical guides and check the transfer box motor wiring and transfer box motor hall effect sensor wiring. Check the transfer box motor and transfer box mode selector solenoid. repair/renew as necessary
P181E00 Clutch Actuator Range/Performance
  • Transfer case motor current plausibility error
  • Transfer box motor wiring circuit short to ground or power
  • Transfer box motor hall effect sensor wiring circuit short to ground or power
  • Transfer box motor or solenoid failure
Refer to the electrical guides and check the transfer box motor wiring and transfer box motor hall effect sensor wiring. Check the transfer box motor and transfer box mode selector solenoid. repair/renew as necessary
P181F00 Clutch Control System Performance
  • Transfer case motor driver plausibility error
  • Transfer box motor wiring circuit short to ground or power
  • Transfer box motor hall effect sensor wiring circuit short to ground or power
  • Transfer box motor or solenoid failure
Refer to the electrical guides and check the transfer box motor wiring and transfer box motor hall effect sensor wiring. Check the transfer box motor and transfer box mode selector solenoid. repair/renew as necessary
P183A00 Range Change Mechanism Failure
  • Transfer box input and output speed do not change as necessary for a range change
  • Synchronizer lock defect
Refer to the electrical guides and check the transfer box motor wiring and transfer box motor hall effect sensor wiring. Check the transfer box motor and transfer box mode selector solenoid. repair/renew as necessary
P186D00 Clutch Actuator Stuck
  • Actuator fault
Using the approved diagnostic equipment, calibrate the center differential control module/clutch actuator. Clear the DTC and retest. If the problem persists, renew the actuator.
P271100 Unexpected Mechanical Gear Disengagement
  • Transfer case control module CAN bus - off bus during range change
  • Transfer case stuck in neutral
  • Transfer case changeover solenoid fault
  • Transfer case motor fault
  • Transfer case internal obstruction
Check for network communication DTCS. Check the transfer case mechanical operation. Check the changeover solenoid, motor and circuits. Refer to the electrical guides.
P278500 Clutch Actuator Temperature Too High
  • Actuator internal temperature sensor value above 150°C Extensive prolonged off-road use Insufficient oil quantity Incorrect oil specification Internal Differential problem
Confirm the customer complaint and vehicle usage at the time of DTC event. Check the operation of the rear Differential. Check the rear Differential oil quantity and specification. Refer to the relevant section of the workshop manual. Clear the DTC and retest. If the problem persists, renew the rear Differential assembly. Refer to the warranty policy and procedures manual if a Differential is suspect.
P278700 Clutch Temperature Too High
  • Clutch plate over-temperature
Check the clutch condition. Check for slippage. Calibrate as necessary using the approved diagnostic system. Consider the atmospheric conditions before condemning a component.
P278900 Clutch Adaptive Learning at Limit
  • Clutch not calibrated
  • Error occurred during clutch calibration
Check the clutch condition. Calibrate as necessary using the approved diagnostic system.
P280600 Transmission Range Sensor Alignment
  • Transmission range sensor not calibrated
  • Error occurred during transmission range sensor calibration
Calibrate as necessary using the approved diagnostic system.
U007388 Control Module Communication Bus "A" Off
  • Bus off: Traction control module (TCCM)
  • Bus off: Body control module (BCM)
  • Bus off: Park aid module (PAM).
  • Bus off: Electric parking brake module (EPB)
  • Bus off: Dynamic suspension module
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U010087 Lost Communication With ECM/PCM "A"
  • CAN Link transfer case control module/ECM missing message
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U010187 Lost Communication with TCM
  • CAN Link transfer case control module/TCM missing message
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U010486 Lost Communication With Cruise Control Module
  • Invalid signal from the TCCM
  • ACC timed out, signal out of range or signal invalid
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U010487 Lost Communication With Cruise Control Module
  • CAN Link transfer case control module/speed control module missing message
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U012287 Lost communication with vehicle dynamics control module
  • CAN Link transfer case control module/ABS module missing message
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U012687 Lost communication with steering angle sensor module (SASM)
  • CAN bus fault
  • SASM disconnected
  • SASM not configured/calibrated
  • SASM failure
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U012887 Lost communication with park brake control module
  • CAN bus fault
  • Park brake module disconnected
  • Park brake module not configured
  • Park brake module failure
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U013286 Lost Communication With Suspension Control Module "A"
  • Air suspension timed out, signal out of range or signal invalid
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U013287 Lost Communication With Suspension Control Module "A"
  • CAN Link transfer case control module/air suspension control module signal invalid
  • CAN bus fault
  • RLM disconnected
  • RLM not configured
  • RLM failure
  • Harness/connector issue
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U013687 Lost Communication With Differential Control Module - Rear
  • CAN Link transfer case control module/electronic rear differential control module missing message
  • CAN bus fault
  • ATCM disconnected
  • ATCM not configured
  • ATCM failure
  • Harness/connector issue
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U013886 Lost Communication with All Terrain Control Module
  • CAN Link transfer case control module/terrain response control module signal invalid
  • CAN bus fault
  • ATCM disconnected
  • ATCM not configured
  • ATCM failure
  • Harness/connector issue
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U015587 Lost Communication With Instrument Panel Cluster (IPC) Control Module
  • CAN Link transfer case control module/instrument cluster missing message
  • CAN bus fault
  • IPC disconnected
  • IPC not configured
  • IPC failure
  • Harness/connector issue
Check the control module installation/configuration. Refer to the lost communication statement at the start of the Network Communications section in the workshop manual.
U030055 Internal control module software incompatibility
  • ATCM not configured
Configure the module using the approved diagnostic system.
U1A034A Car config parameter
  • Vehicle configuration - Incorrect module installed
Configure the module using the approved diagnostic system.
U1A0387 Car Config Parameter
  • Lost communication with the BCM/RCM - Missing message
  • Car configuration not received
Configure the module using the approved diagnostic system. Refer to the lost communication statement in the Network Communications section in the workshop manual.
U1A1449 CAN initialization failure
  • Internal electronic fault
Refer to the Network Communications section of the workshop manual.
U1A354A VIN data
  • VIN Data mismatch
  • Lost communication with differential control module - front - incorrect component installed
Configure the module using the approved diagnostic system. Refer to the Network Communications section in the workshop manual.