Preliminary Inspection

Preliminary Inspection
1 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

Required information for WPAP (where applicable)
- The nature of the fault (loss of drive, slip, judder, gear shift quality, noise, etc)
- The frequency with which the fault occurs
- The conditions under which the fault occurs, including temperature (coolant and ambient), selected gear, road speed, engine speed, and any specific conditions
- Check and rectify non-transmission related DTCs before continuing with transmission diagnosis
2 Record the vehicle details, including:
- Service history
- The transmission serial number
- The transmission software level
3 Visually inspect the transmission for fluid leaks, damage, etc.
4 Check the transmission fluid condition.

NOTE:
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.
5 Check the transmission fluid level. Refer to the relevant section of this product.

NOTE:
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.
6 Check the engine idle speed and throttle sensor using the approved diagnostic system or a scan tool.
7 Check the transmission selector cable adjustment. Refer to the relevant section of this product.
8 Check the transmission range sensor adjustment.
- 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.