Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
Diagnose any Communication DTCs before continuing.
1. Ignition on
2. With the scan tool, select View DTCs.
  Is the DTC Active or Pending at this time?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
LIN BUS OR CAN BUS DTCS SET IN THE BODY CONTROL MODULE
Are there any LIN Bus or CAN Bus DTCs set in the Body Control Module?

Yes
- Diagnose the appropriate DTC in the Body Control module before continuing. Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX - 1500 .
No
- Go To 3
CHECK THE (D401) LIN BUS CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the Switch Bank Module harness connector.
3. Disconnect the Body Control Module (BCM) C7/G harness connector.
4. Measure the resistance of the (D401) LIN Bus circuit between the Switch Bank Module harness connector and the BCM C7/G harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Switch Bank in accordance with the service information. Refer to REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the (D401) LIN Bus circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .