Diagnostic Test
WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR AN ACTIVE DTC 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.
- Start the engine and test drive the vehicle in accordance with the monitoring conditions.
- With the scan tool read DTCs.NOTE:
Diagnose and repair any CAN bus communication faults before continuing.
Is the DTC active or pending?
Yes
- Go To 2
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
- CHECK FOR TRANSMISSION CONTROL MODULE (TCM) DTCS
- With the scan tool, read TCM DTCs.
Does the TCM also have a DTC present for the Park/Neutral Switch or TRS Signal circuits?
Yes
- Refer to the POWERTRAIN CONTROL MODULE (PCM) - ELECTRICAL DIAGNOSTICS - 68RFE AUTOMATIC TRANSMISSION - 2500 HD & 3500 HD article and perform the appropriate diagnostic procedure.
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.