Diagnostic Test

ACTIVE DTC
1. Ignition on, engine not running.
2. With the scan tool, select View 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 .
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 DIAGNOSIS AND TESTING and perform the U0002-CAN C BUS OFF PERFORMANCE diagnostic procedure.
  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 is active on the bus.
  Is the ABS Module active on the bus?
  
  Yes
  - Go To 4
  No
  - Refer to DIAGNOSIS AND TESTING and perform the NO RESPONSE FROM ABS diagnostic procedure.
ACTIVE DTCS IN THE BODY CONTROL MODULE (BCM)
1. With the scan tool, select ECU View and select BCM.
2. With the scan tool, read Active DTCs.
  Is the U0002-CAN C BUS OFF PERFORMANCE active in the BCM at this time?
  
  Yes
  - Replace the ABS Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .