Diagnostic Test
- CHECK FOR AN ACTIVE DTC
- With the scan tool, read DTCs and record on the repair order.
- Record the Freeze Frame Data and Environmental Data.
- With the scan tool, erase DTCs.
- Using the recorded Freeze Frame and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
- With the scan tool, read DTCs.
Did the DTC return?
Yes
- Go To 2
No
- Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to INTERMITTENT CONDITION .
- CHECK FOR OTHER DTCS
- Refer to the recorded DTCs.
Are there any CAN bus or communication DTCs active or pending?
Yes
- Perform the applicable diagnostic procedure(s). Refer to DIAGNOSTIC CODE INDEX .
No
- Go To 3
- Refer to the recorded DTCs.
- CHECK FOR TRANSMISSION CONTROL MODULE (TCM) DTCS NOTE:
This DTC could set during towing if the Manual Park Release Cable was not fully pulled and the pawl is in an intermediate position for too long.
- With the scan tool, read TCM DTCs.
Does the TCM have a DTC set for the Park/Neutral Switch or TRS Signal circuits?
Yes
- Perform the appropriate diagnostic procedure. Refer to DIAGNOSTIC CODE INDEX .
No
- Replace the Transmission Control Module in accordance with the Service Information.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
- With the scan tool, read TCM DTCs.