Diagnostic System Check - Automatic Transmission V6
Description
This section procedure is organised in a logical structure that begins with the Diagnostic System Check. The Diagnostic System Check directs you in a logical direction to the appropriate Section or diagnostic procedure.
Test Description
The following numbers below refer to the step numbers on the diagnostic table:
1 If you are unsure whether the problem is isolated to the TCM or the issue is affecting a number of vehicle functions, proceed to Section 0D Vehicle Diagnostics.
2 Within Diagnostic Starting Point - Automatic Transmission there a number of requirements that must be met before you can start diagnosis.
3 Check if there is a data communication between Tech 2 and the TCM.
4 Checks if the TCM has set any DTCs. If no DTCs have set, the Functional Test must be performed, which diagnoses the hydro-mechanical functions of the transmission.
Step | Action | Yes | No |
|---|---|---|---|
1 | Is the fault specifically isolated to this system / module? | Go to Step 2 | |
2 | Have you read the Basic Diagnostic Requirements, Diagnostic Precautions and Preliminary Checks? | Go to Step 3 | |
3 |
Transmission / Automatic Transmission and follow the instruction on Tech 2. Does Tech 2 display the TCM specifications? | Go to Step 4 | Refer to Diagnostic Starting Point - Computer/Integrating Systems |
4 | On Tech 2 select: Diagnostic Trouble Codes / Read DTC Information Does Tech 2 display any DTCs? | Perform the Functional Test, refer to Diagnostic System Check - Automatic Transmission |
