Diagnostic Test
- 1) P/N & D/R NOT IN CORRECT POSITION NOTE: Before continuing, ensure communication can be established with the TCM. If the scan tool is unable to communicate with the TCM or if there are related communication DTCs present refer to NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS and perform the appropriate symptom.
Ignition on, engine not running.
With the scan tool, read DTCs.
Is the DTC active at this time?
Yes
- Go to 2).
No
- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Refer to INTERMITTENT CONDITION .
- Perform POWERTRAIN VERIFICATION TEST .
- 2) CHECKING TCM DTC(S)
Turn the ignition off.
With the scan tool, read TCM DTCs.
Is there any there Transmission DTC(s) present?
Yes
- Refer to the appropriate Transmission symptom in the applicable TRANSMISSIONS article.
No
- Before continuing, check the PCM harness connector terminals for corrosion, damage or terminal push out. Repair as necessary. Replace and program the Powertrain Module in accordance with the Service Information.
- Perform POWERTRAIN VERIFICATION TEST .