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.
- ACTIVE DTC
- Turn the ignition on.
- With the scan tool check active DTCs.
Is the DTC active?
Yes
- Go To 2
No
- Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
- CHECK THE AMMONIA SENSOR NOTE:
The Ammonia Sensor Module has two harness connectors. One connector is routed to the Ammonia Sensor Probe (in the exhaust). The other connector is routed back to the PCM and the PDC. The harness wiring to the Probe is NOT shown in the MINI Wiring Schematic above. Follow the instructions below using wiring color only for identification.
Are the P24E1, P24EA, or U12A4 present?
Yes
- Perform the P24E1, P24EA, or U12A4 diagnostic procedure before proceeding.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
No
- Replace the Ammonia Sensor in accordance with the service information.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .