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
1. Ignition on, engine not running.
2. With a scan tool, select View DTCs.
  Is the U1412-IMPLAUSIBLE VEHICLE SPEED SIGNAL RECEIVED Active at this time?
  
  Yes
  - Go To 2.
  No
  - Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Refer to INTERMITTENT CONDITION .
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
  - Refer to the Diagnostic Procedure for the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT. Refer to U0001-CAN C BUS CIRCUIT .
  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
  - For No Response diagnostic procedures. 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 per Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module per Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .