Diagnostic Test
- CHECK FOR AN 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.
- Turn the ignition on.
- With the scan tool, read DTCs and record on the repair order.
Is the DTC active or pending?
Yes
- Go To 2
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
- ABS MODULE IS ACTIVE ON THE CAN C BUS
- 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 3
No
- Refer to NO COMMUNICATION WITH CAN BUS and perform the No Response from ABS diagnostic procedure.
- Using the Network Review Screen on the scan tool, verify that the ABS Module is active on the bus.
- DTCS STORED OR ACTIVE IN THE ABS MODULE
- With the scan tool, read DTCs in the ABS Module.
Are any DTCs active or stored in the ABS Module?
Yes
- Refer to ANTI-LOCK BRAKES (ABS) - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
No
- Go To 4
- With the scan tool, read DTCs in the ABS Module.
- ACTIVE DTCS IN THE BCM
- With the scan tool, select ECU View and select the BCM.
- With the scan tool, read DTCs in the BCM.
Are any ABS related DTCs active or stored in the BCM?
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 PCM VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .