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.

CHECK COMMUNICATION BETWEEN THE SCCM AND THE SPEED CONTROL SWITCH ASSEMBLY
1. Turn the ignition on.
2. With the scan tool, read DTCs in the SCCM.
  Is the SCCM reporting any Speed Control Switch or a Loss of Communication fault with the Speed Control Switch Assembly?
  
  Yes
  - Refer to the DTC INDEX - 1500 and perform the appropriate diagnostic test.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 2
ACTIVE DTC
1. Cycle the ignition off and back to on.
2. With the scan tool, read active DTCs.
  Is this DTC active?
  
  Yes
  - Go To 3
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
OTHER COMMUNICATION DTCS PRESENT
1. With the scan tool continue reading PCM DTCs.
  Is the PCM reporting any other Lost Messages or Implausible Data DTCs?
  
  Yes
  - Replace and program the Powertrain Control Module (PCM) in accordance with the service information. Refer to REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Wiggle test and check the connector at the SCCM for an intermittent loose connection. If the wiring and connector tests good, replace and program the Steering Column Control Module (SCCM) in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .