Diagnostic Test

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.
1. Ignition on, engine not running.
2. With a scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go to step 2
  No
  - Perform the CHECKING FOR AN INTERMITTENT DTC diagnostic procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
DTC U0001-CAN C BUS IS ACTIVE IN THE PCM
1. With a scan tool, select View DTCs.
  Is the DTC U0001-CAN C BUS Active in the PCM?
  
  Yes
  - Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing and perform the U0001-Can C Bus diagnostic procedure.
  No
  - Go to step 3
ABS MODULE IS ACTIVE ON THE CAN C BUS
1. Using the Network Review Screen on the scan tool, verify that the ABS Module is active on the bus.
  Is the ABS Module active on the bus?
  
  Yes
  - Go to step 4
  No
  - Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing and perform the No Response from ABS diagnostic procedure.
DTC U0001-CAN C BUS ACTIVE IN THE FCM
1. With the scan tool, select View DTCs in the TIPM.
  Is the DTC U0001-CAN C BUS Active in the TIPM?
  
  Yes
  - Replace the ABS Module in accordance with the Service Information.
  - Perform the ABS Verification Test. Refer to DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard Procedure .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .