Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
1. Ignition on, engine not running.
2. With a scan tool, read DTCs.
  Is the U1412-IMPLAUSIBLE VEHICLE SPEED SIGNAL RECEIVED active at this time?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT IS ACTIVE
1. Continue reading DTCs.
  Is the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT ACTIVE at this time?
  
  Yes
  - Perform the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT diagnostic procedure. Refer to U0001-CAN C BUS .
  No
  - Go To 3.
ABS MODULE IS ACTIVE ON THE CAN C BUS
1. With the scan tool, select ECU View.
2. Verify that the ABS Module active on the bus.
  Is the ABS Module active on the bus?
  
  Yes
  - Go To 4.
  No
  - Perform the No Response from ABS diagnostic procedure. Refer to NO RESPONSE FROM ABS (ANTILOCK BRAKE MODULE) .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
ACTIVE DTCS IN THE TIPM
1. With the scan tool, select ECU View and select TIPM.
2. With the scan tool, read active DTCs.
  Is the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT ACTIVE in the TIPM at this time?
  
  Yes
  - Replace the ABS Module in accordance with the service information.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .