:  Jan 30, 2008



Overview

This section is intended to provide a means for the technician to diagnose transmission component faults, rather than replacing the entire unit.

However, there are a number of situations where the replacement of the unit is the only practical solution, and this section will cover the diagnosis necessary to gather the information required for transmission replacement to be authorized by the warranty prior approval program (WPAP) where it applies, as well as covering the diagnostic trouble codes (DTCs) stored by the control module.

The basic checks of the transmission (fluid condition and level, etc) should be carried out first, and this will mean using the approved diagnostic system or other equipment with data logging facility to monitor temperatures, etc.

For information on the operation of the transmission, refer to the relevant workshop manual section.

Inspection and verification

. Verify the customer concern.

. Visually inspect for obvious mechanical or electrical faults.

Mechanical Electrical
  • Fluid condition
  • Fluid level
  • Fluid leaks
  • Fluid cooler
  • External linkages
  • Gear selector lever
  • Fuses
  • Wiring harnesses
  • Electrical connector(s)
  • Transmission control module (TCM)
  • Engine control module (ECM)
  • Controller area network (CAN) circuits

. 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 DTC index.
  Because the DTCs are stored in more than one module, a complete vehicle read is recommended
Because the DTCs are stored in more than one module, a complete vehicle read is recommended
  Make sure that all DTCs are cleared following rectification.
Make sure that all DTCs are cleared following rectification.

Preliminary inspection

. As much information as possible should be obtained from the owner/driver about the fault in order to assist with the diagnosis. Time spent on this will reduce the necessity for extensive road testing and possible missed diagnosis.
  The information required for WPAP is still useful as an aid to diagnosis, even where the system is not in operation
The information required for WPAP is still useful as an aid to diagnosis, even where the system is not in operation

Required information for WPAP (where applicable) . Record the vehicle details, including:

. Visually inspect the transmission for fluid leaks, damage, etc.

. Check the transmission fluid condition.

:
  Fluid condition is a good indicator of the transmission internal condition. If the fluid is burnt and/or contaminated, this would usually mean the internal damage to the transmission is at such a level that unit replacement is the best option. Compare the fluid drained from the transmission with fresh fluid for color and odor.

. Check the transmission fluid level. Refer to the relevant workshop manual section.

:
  This is crucial to the operation of the transmission, and the procedure must be closely followed to avoid inaccurate diagnosis, with the resultant possible rejection of a warranty claim.

. Check the engine idle speed and throttle sensor using the approved diagnostic system or a scan tool.

. Check the transmission selector cable adjustment. Refer to the relevant workshop manual section.

. Check the transmission range sensor adjustment.
  A comprehensive procedure for transmission range sensor setting is accessible through the approved diagnostic system.
A comprehensive procedure for transmission range sensor setting is accessible through the approved diagnostic system.

If any faults are found and rectified in the above sequence, clear any DTCs and test the vehicle for normal operation.

If a failure condition is found indicating the need to renew the transmission assembly, the request must go through the warranty prior approval program (where applicable) before work is begun.

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).

DTC Description Possible causes Action
P012100 Throttle/Pedal Position Sensor A Circuit Range/Performance
  • Throttle position sensor wiring high resistance
  • Throttle position sensor sensing circuits (Throttle position 1 or Throttle position 2) short circuit to power
  • Throttle position sensor failure
  • Range/Performance Kickdown at low pedal openings
Check for pedal position sensor DTCs. Configure the module using the approved diagnostic system.
P021900 Engine Overspeed Condition
  • Engine speed implausible
Check for engine management DTCs.
P050000 Vehicle Speed Sensor A
  • Vehicle speed signal not detected
Check for ABS DTCs. Check the CAN circuits. Refer to the electrical guides.
P050100 Vehicle Speed Sensor A Range/Performance
  • Range/Performance
Check for input/output sensor DTCs. Check the CAN circuits. Refer to the electrical guides.
P056100 System Voltage Unstable
  • Power supply voltage is out of range when the engine is running
Check the battery and charging system. Refer to the relevant workshop manual section.
P056200 System Voltage Low
  • Supply voltage to TCM very low
Check the battery condition and state of charge. Check the TCM supply circuits. Refer to the electrical guides.
P056300 System Voltage High
  • Power supply voltage is too high if the engine is running and there has been no jump-start or transmission limp-home event
Check the battery and charging system. Refer to the relevant workshop manual section. Check if the vehicle has been jump-started.
P060100 Internal Control Module Memory Check Sum Error
  • Checksum error
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P060300 Internal Control Module Keep Alive Memory (KAM) Error
  • Keep-alive memory (KAM) error
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P060500 Internal Control Module Read Only Memory (ROM) Error
  • Read only memory (ROM) error
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P061300 TCM Processor
  • Processor
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P062F00 Internal Control Module EEPROM Error
  • EEPROM error
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P064200 Sensor Reference Voltage A Circuit Low
  • Reference voltage circuit short circuit to ground
  • Reference voltage circuit high resistance
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P064300 Sensor Reference Voltage A Circuit High
  • Reference voltage circuit short circuit to power
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P065700 Actuator Supply Voltage A Circuit / Open
  • Supply voltage circuit high resistance
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P065800 Actuator Supply Voltage A Circuit Low
  • Supply voltage circuit short circuit to ground
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P065900 Actuator Supply Voltage A Circuit High
  • Supply voltage circuit short circuit to power
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P066800 PCM / ECM / TCM Internal Temperature Sensor A Circuit Low
  • Temperature sensor circuit high resistance
  • Temperature sensor circuit short circuit to ground
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P066900 PCM / ECM / TCM Internal Temperature Sensor A Circuit High
  • Temperature sensor circuit short circuit to power
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P070500 Transmission Range Sensor A Circuit (PRNDL Input)
  • Signal implausible
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P071000 Transmission Fluid Temperature Sensor A Circuit
  • Temperature rise rate too low
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P071100 Transmission Fluid Temperature Sensor A Circuit Range/Performance
  • Sensor circuits: short circuit to each other
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P071200 Transmission Fluid Temperature Sensor A Circuit Low
  • Sensor circuit high resistance
  • Sensor circuit short circuit to ground
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P071300 Transmission Fluid Temperature Sensor A Circuit High
  • Sensor circuit short circuit to power
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P071600 Turbine/Input Shaft Speed Sensor A Circuit Range/Performance
  • Sensor circuit high resistance
  • Sensor circuit short circuit to ground
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P071700 Turbine/Input Shaft Speed Sensor A Circuit No Signal
  • Sensor circuit short circuit to power
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P072000 Output Shaft Speed Sensor Circuit
  • Sensor circuit short circuit to power
  • Sensor circuit high resistance
  • Sensor circuit short circuit to ground
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P072122 Output Shaft Speed Sensor Circuit Range/Performance
  • Range/Performance Signal amplitude
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P072127 Output Shaft Speed Sensor Circuit Range/Performance
  • Range/Performance
  • Signal rate of change above threshold
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P072164 Output Shaft Speed Sensor Circuit Range/Performance
  • Range/Performance
  • Signal plausibility failure
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P072900 Gear 6 Incorrect Ratio
  • Incorrect ratio Slip too high between input and output shaft speeds
Check for speed sensor DTCs. Check the sensor circuits. Refer to the electrical guides.
P073000 Incorrect Gear Ratio
  • Slip too high between input and output shaft speeds
Check for speed sensor DTCs. Check the sensor circuits. Refer to the electrical guides.
P073100 Gear 1 Incorrect Ratio
  • Incorrect ratio Slip too high between input and output shaft speeds
Check for speed sensor DTCs. Check the sensor circuits. Refer to the electrical guides.
P073200 Gear 2 Incorrect Ratio
  • Incorrect ratio Slip too high between input and output shaft speeds
Check for speed sensor DTCs. Check the sensor circuits. Refer to the electrical guides.
P073300 Gear 3 Incorrect Ratio
  • Incorrect ratio Slip too high between input and output shaft speeds
Check for speed sensor DTCs. Check the sensor circuits. Refer to the electrical guides.
P073400 Gear 4 Incorrect Ratio
  • Incorrect ratio Slip too high between input and output shaft speeds
Check for speed sensor DTCs. Check the sensor circuits. Refer to the electrical guides.
P073500 Gear 5 Incorrect Ratio
  • Incorrect ratio Slip too high between input and output shaft speeds
Check for speed sensor DTCs. Check the sensor circuits. Refer to the electrical guides.
P073600 Reverse Incorrect Ratio
  • Incorrect ratio Slip too high between input and output shaft speeds
Check for speed sensor DTCs. Check the sensor circuits. Refer to the electrical guides.
P074000 Torque Converter Clutch Solenoid Circuit / Open
  • Solenoid circuit high resistance
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P074100 Torque Converter Clutch Solenoid Circuit Performance/Stuck Off
  • Solenoid circuit stuck off
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P074800 Pressure Control Solenoid A Electrical
  • Solenoid current too high/low
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P075113 Shift Solenoid A Performance/Stuck Off
  • Performance
  • Stuck off
  • Solenoid circuit high resistance
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P075114 Shift Solenoid A Performance/Stuck Off
  • Performance
  • Stuck off
  • Solenoid circuit high resistance
  • Solenoid circuit short circuit to ground
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P075200 Shift Solenoid A Stuck On
  • Stuck on
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P075300 Shift Solenoid A Electrical
  • Solenoid circuit short circuit to power
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P077800 Pressure Control Solenoid B Electrical
  • Solenoid current too high
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P078000 Shift malfunction
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P078123 1 - 2 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open
Check the fluid level and condition. Check for associated DTCs.
P078162 1 - 2 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P078164 1 - 2 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P078262 2 - 3 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P078264 2 - 3 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P078323 3 - 4 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open
Check the fluid level and condition. Check for associated DTCs.
P078362 3 - 4 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P078364 3 - 4 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P078423 4 - 5 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open
Check the fluid level and condition. Check for associated DTCs.
P078462 4 - 5 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P078464 4 - 5 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P079800 Pressure Control Solenoid C Electrical
  • Solenoid current too high
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P081C00 Park Input Circuit
  • Park lock signal fault
Check the gear selector input circuits. Refer to the electrical guides.
P082600 Up and Down Switch Circuit
  • Implausible signal
Check the up and down switch circuits. Refer to the electrical guides.
P082923 5-6 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open
Check the fluid level and condition. Check for associated DTCs.
P082962 5-6 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P082964 5-6 Shift
  • Input/Output shaft ratio too high during a shift Clutch does not open or close
Check the fluid level and condition. Check for associated DTCs.
P085000 Park / Neutral Switch Input Circuit
  • Starter inhibit signal fault
Check the starter inhibit circuits. Refer to the electrical guides.
P089700 Transmission Fluid Deteriorated
  • Temperature too high over too long a time
Renew the fluid.
P092800 Gear Shift Lock Solenoid/Actuator Circuit A / Open
  • Solenoid circuit high resistance
Check the solenoid circuits. Refer to the electrical guides.
P092900 Gear Shift Lock Solenoid/Actuator Circuit A Range/Performance
  • Solenoid circuit short circuit to ground
  • Solenoid circuit high resistance
Check the solenoid circuits. Refer to the electrical guides.
P093000 Gear Shift Lock Solenoid/Actuator Circuit A Low
  • Solenoid circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P093100 Gear Shift Lock Solenoid/Actuator Circuit A High
  • Solenoid circuit short circuit to power
Check the solenoid circuits. Refer to the electrical guides.
P093800 Hydraulic Oil Temperature Sensor Range/Performance
  • Range/Performance Signal not plausible
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P096013 Pressure Control Solenoid A Control Circuit / Open
  • Control circuit high resistance
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P096014 Pressure Control Solenoid A Control Circuit / Open
  • Control circuit high resistance
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P096200 Pressure Control Solenoid A Control Circuit Low
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P096300 Pressure Control Solenoid A Control Circuit High
  • Control circuit short circuit to power
Check the solenoid circuits. Refer to the electrical guides.
P096413 Pressure Control Solenoid B Control Circuit / Open
  • Control circuit high resistance
Check the solenoid circuits. Refer to the electrical guides.
P096414 Pressure Control Solenoid B Control Circuit / Open
  • Control circuit high resistance
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P096600 Pressure Control Solenoid B Control Circuit Low
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P096700 Pressure Control Solenoid B Control Circuit High
  • Control circuit short circuit to power
Check the solenoid circuits. Refer to the electrical guides.
P096813 Pressure Control Solenoid C Control Circuit / Open
  • Control circuit high resistance
Check the solenoid circuits. Refer to the electrical guides.
P096814 Pressure Control Solenoid C Control Circuit / Open
  • Control circuit high resistance
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P097000 Pressure Control Solenoid C Control Circuit Low
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P097100 Pressure Control Solenoid C Control Circuit High
  • Control circuit short circuit to power
Check the solenoid circuits. Refer to the electrical guides.
P178300 Transmission Overtemperature Condition
  • Valve body module shut-down detected on last drive cycle
Check the fluid level and condition. Check for associated DTCs.
P271600 Pressure Control Solenoid D Electrical
  • Solenoid current too high
Check the solenoid circuits. Refer to the electrical guides.
P271813 Pressure Control Solenoid D Control Circuit / Open
  • Control circuit high resistance
Check the solenoid circuits. Refer to the electrical guides.
P271814 Pressure Control Solenoid D Control Circuit / Open
  • Control circuit high resistance
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P272000 Pressure Control Solenoid D Control Circuit Low
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P272100 Pressure Control Solenoid D Control Circuit High
  • Control circuit short circuit to power
Check the solenoid circuits. Refer to the electrical guides.
P272500 Pressure Control Solenoid E Electrical
  • Solenoid current too high
Check the solenoid circuits. Refer to the electrical guides.
P272713 Pressure Control Solenoid E Control Circuit / Open
  • Control circuit high resistance
Check the solenoid circuits. Refer to the electrical guides.
P272714 Pressure Control Solenoid E Control Circuit / Open
  • Control circuit high resistance
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P272900 Pressure Control Solenoid E Control Circuit Low
  • Control circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
P273000 Pressure Control Solenoid E Control Circuit High
  • Control circuit short circuit to power
Check the solenoid circuits. Refer to the electrical guides.
P275900 Torque Converter Clutch Pressure Control Solenoid Electrical
  • Pressure control solenoid fault
Check the solenoid circuits. Refer to the electrical guides.
P276100 Torque Converter Clutch Pressure Control Solenoid Control Circuit / Open
  • Pressure control solenoid circuit high resistance
Check the solenoid circuits. Refer to the electrical guides.
P276200 Torque Converter Clutch Pressure Control Solenoid Control Circuit Range / Perf
  • Pressure control solenoid circuit current too low
Check the solenoid circuits. Refer to the electrical guides.
P276300 Torque Converter Clutch Pressure Control Solenoid Control Circuit High
  • Pressure control solenoid circuit short circuit to power
Check the solenoid circuits. Refer to the electrical guides.
P276400 Torque Converter Clutch Pressure Control Solenoid Control Circuit Low
  • Pressure control solenoid circuit short circuit to ground
Check the solenoid circuits. Refer to the electrical guides.
U000188 High Speed CAN Communication Bus
  • Bus off
The module setting this code has disabled CAN transmission. Check for other bus off codes. Check the module and circuits. Refer to the electrical guides. Refer to the warranty policy and procedures manual if a module is suspect.
U010087 Lost Communication With ECM/PCM "A"
  • Missing message
Check the ECM and circuits. Refer to the electrical guides.
U010287 Lost Communication with Transfer Case Control Module
  • Missing message
Check the transfer case control module and circuits. Refer to the electrical guides.
U010487 Lost Communication With Cruise Control Module
  • Missing message
Check the speed control module and circuits. Refer to the electrical guides.
U012287 Lost Communication With Vehicle Dynamics Control Module
  • Missing message
Check the ABS module and circuits. Refer to the electrical guides.
U012687 Lost Communication With Steering Angle Sensor Module
  • Missing message
Check the steering angle sensor and circuits. Refer to the electrical guides.
U012887 Lost Communication With Park Brake Control Module
  • Missing message
Check the parking brake control module and circuits. Refer to the electrical guides.
U013887 Lost Communication with All Terrain Control Module
  • Missing message
Check the all-terrain control module and circuits. Refer to the electrical guides.
U015587 Lost Communication With Instrument Panel Cluster (IPC) Control Module
  • Missing message
Check the instrument cluster and circuits. Refer to the electrical guides.
U030055 Internal Control Module Software Incompatibility
  • Module is not configured
Configure the module using the approved diagnostic system.
U040186 Invalid Data Received from ECM/PCM A
  • Signal invalid
Check the engine speed at the instrument cluster. Check for ECM DTCs.
U041686 Invalid Data Received From Vehicle Dynamics Control Module
  • Signal invalid
Check for ABS DTCs.
U30004A Control Module
  • Incorrect component installed Mismatch between configuration data and read configuration
Configure the module using the approved diagnostic system.