| DTC |
Description |
Possible causes |
Action |
| P056200 |
System Voltage Low |
- Rear differential control module voltage supply below 9V
|
Check the power charge condition, refer to the electrical
guides and check the differential actuator sensor circuit, repair as
necessary. |
| P056300 |
System Voltage High |
- Rear differential control module voltage supply below 16V
|
Check the charging circuit and power condition. |
| P060400 |
Internal Control Module Random Access Memory (RAM) Error |
- Rear differential control module internal error
|
Clear the DTC and retest. If the problem persists, renew the
control module. Refer to the warranty policy and procedures manual if a
module is suspect. |
| P060500 |
Internal Control Module Read Only Memory (ROM) Error |
- Rear differential control module internal error
|
Clear the DTC and retest. If the problem persists, renew the
control module. Refer to the warranty policy and procedures manual if a
module is suspect. |
| P060600 |
Control Module Processor |
|
This is a control module internal check DTC and is not
necessarily a fault. If no other DTCs are logged and no customer complaint
exists, clear/ignore this DTC. |
| P060700 |
Control Module Performance |
- Rear differential control module internal error
|
Clear the DTC and retest. If the problem persists, renew the
control module. Refer to the warranty policy and procedures manual if a
module is suspect. |
| P065200 |
Sensor Reference Voltage 'B' Circuit Low |
- Actuator internal position sensor supply voltage below 57V
|
Refer to the electrical guides and check the differential
actuator sensor position circuit, repair as necessary. If no circuit
problems exist, renew the differential actuator. |
| P065300 |
Sensor Reference Voltage 'B' Circuit High |
- Actuator internal position sensor supply voltage below 83V
|
Refer to the electrical guides and check the differential
actuator sensor position circuit, repair as necessary. If no circuit
problems exist, renew the differential actuator. |
| P066600 |
PCM/ECM/TCM Internal Temperature Sensor 'A' Circuit |
- Rear differential control module internal temperature sensor value
above 105°C
|
This is a control module internal check DTC and is not
necessarily a fault. If no other DTCs are logged and no customer complaint
exists, clear this DTC and retest. If the problem persists, renew the
control module. Refer to the warranty policy and procedures manual if a
module is suspect. |
| P071200 |
Transmission Fluid Temperature Sensor 'A' Circuit Low |
- Differential actuator internal temperature sensor open circuit or
short circuit to ground
|
Refer to the electrical guides and check the differential
actuator sensor circuit, repair as necessary. If no circuit problems
exist, renew the differential actuator. |
| P071300 |
Transmission Fluid Temperature Sensor 'A' Circuit High |
- Differential actuator internal temperature sensor open circuit or
short circuit to power
|
Refer to the electrical guides and check the differential
actuator sensor circuit, repair as necessary. If no circuit problems
exist, renew the differential actuator. |
| P080600 |
Clutch Position Sensor Circuit Range/Performance |
- Mismatch of actual and expected/calculated actuator position
Internal differential actuator error
|
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. Clear
the DTC and retest. If the problem persists, renew the differential
actuator. |
| P080700 |
Clutch Position Sensor Circuit Low |
- Differential actuator internal position sensor supply, ground,
signal 1 or 2 open circuit or sensor supply, signal 1 or 2 short circuit
to ground
|
Refer to the electrical guides and check the differential
actuator circuit, repair as necessary. If no circuit problems exist, renew
the differential actuator. |
| P080800 |
Clutch Position Sensor Circuit High |
- Differential actuator internal position sensor signal 1 or 2 short
circuit to power
|
Refer to the electrical guides and check the differential
actuator circuit, repair as necessary. If no circuit problems exist, renew
the differential actuator. |
| P080A00 |
Clutch Position Not Learned |
- Rear differential control module (RDCM) not calibrated
- Differential clutch stuck or out of tolerance
|
Using the approved diagnostic equipment, calibrate the rear
differential control module. 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. |
| P089400 |
Transmission Component Slipping |
- Differential actuator internal magnetic brake is slipping
|
Renew the differential actuator. |
| P090000 |
Clutch Actuator Circuit/Open |
- Differential actuator supply open circuit
|
Refer to the electrical guides and check the differential
actuator circuit, repair as necessary. |
| P090100 |
Clutch Actuator Circuit Range/Performance |
- Differential actuator supply short circuit
|
Refer to the electrical guides and check the differential
actuator circuit, repair as necessary. |
| P090200 |
Clutch Actuator Circuit Low |
- Differential actuator supply circuit short to ground.
|
Refer to the electrical guides and check the differential
actuator circuit, repair as necessary. |
| P090300 |
Clutch Actuator Circuit High |
- Differential actuator supply circuit short to power
|
Refer to the electrical guides and check the differential
actuator circuit, repair as necessary. |
| P160300 |
EEPROM Malfunction |
- Rear differential control module internal error
|
Clear the DTC and retest. If the problem persists, renew the
control module. Refer to the warranty policy and procedures manual if a
module is suspect. |
| P178300 |
Transmission Over-Temperature Condition |
- Rear Differential oil sump temperature sensor value above 150°C
|
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. |
| P186A00 |
Differential Lock-Up Actuator Brake Control Circuit/Open |
- Open circuit of actuator internal magnetic brake supply leads
|
Refer to the electrical guides and check the differential
actuator circuit, repair as necessary. If no circuit problems exist, renew
the differential actuator. |
| P186B00 |
Differential Lock-Up Actuator Brake Control Circuit Low |
- Short circuit to ground of both differential actuator internal
magnetic brake pins
|
Refer to the electrical guides and check the differential
actuator circuit, repair as necessary. If no circuit problems exist, renew
the differential actuator. |
| P186C00 |
Differential Lock-Up Actuator Brake Control Circuit High |
- Short circuit to power of both differential actuator internal
magnetic brake pins
|
Refer to the electrical guides and check the differential
actuator circuit, repair as necessary. If no circuit problems exist, renew
the differential actuator. |
| P186D00 |
Clutch Actuator Stuck |
|
Using the approved diagnostic equipment, calibrate the rear
differential control module/clutch actuator. Clear the DTC and retest. If
the problem persists, renew the actuator. |
| P274200 |
Transmission Fluid Temperature Sensor 'B' Circuit Low |
- Rear differential oil sump temperature sensor short circuit to
ground
|
Refer to the electrical guides and check the differential
oil temperature sensor circuit, repair as necessary. |
| P274300 |
Transmission Fluid Temperature Sensor 'B' Circuit High |
- Rear differential oil sump temperature sensor open circuit or short
circuit to power
|
Refer to the electrical guides and check the differential
oil temperature sensor circuit, repair as necessary. |
| 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 |
- Rear differential clutch pack temperature (calculated) above 200°C
|
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. |
| U000188 |
High Speed CAN Communication Bus |
- High speed CAN communication Bus (CAN Bus Off)
|
Refer to the Network Communications section of the workshop
manual. |
| U010287 |
Lost Communication With Transfer Case Control Module |
- Lost communication with TCCM
|
Refer to the bus off statement within workshop manual
section 418-00. Refer to the Network Communications section of the
workshop manual. |
| U012287 |
Lost Communication With Vehicle Dynamics Control Module |
- Lost communication with VDM
|
Refer to the bus off statement within workshop manual
section 418-00. Refer to the Network Communications section of the
workshop manual. |
| U030055 |
Internal Control Module Software Incompatibility |
- Rear differential control module not configured
|
Configure the module using the approved diagnostic system.
|
| U1A1449 |
CAN Initialization Failure |
- Rear differential control module supervision software failure
- Internal control module failure
|
Configure the module using the approved diagnostic system.
Clear the DTC and retest. If the problem persists, renew the control
module. Refer to the warranty policy and procedures manual if a module is
suspect. |