Diagnostic Test
WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. 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, record all Freeze frame data.
- With the scan tool, erase DTCs.
- Turn the ignition off for 75 seconds.
- Turn the ignition on.
- With the scan tool, read DTCs.
Did the DTC reset?
Yes
- Go To 2.
No
- Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
- CHECK THE (K31) FUEL LIFT PUMP CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
- Turn the ignition off.
- Disconnect the PCM C2 harness connector.NOTE:
Check connectors - Clean/repair as necessary.
- Turn the ignition on.
- Measure for voltage on the (K31) Fuel Lift Pump Control circuit at the PCM C2 harness connector.
Is there any voltage present?
Yes
- Repair the (K31) Fuel Lift Pump Control circuit for a short to voltage.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
No
- Go To 3.
- CHECK THE PCM/TIPM
- Turn Ignition off.
- Disconnect the TIPM C2 harness connector.
- Reconnect the PCM C2 harness connector.
- Turn the ignition on, engine off.
- Using a 12-Volt test light connected to 12 Volts, probe the (K31) Fuel Lift Pump Control circuit at the TIPM C2 harness connector.
- Toggle the lift pump actuator with the scan tool.NOTE:
The test light must illuminate brightly.
- Compare the brightness to that of a direct connection to the battery.
Does the test light cycle on and off and illuminate brightly?
Yes
- Replace the Totally Integrated Power Module (TIPM) in accordance with the service information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Replace the Powertrain Control Module (PCM) in accordance with the service information.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .