Inspection and Verification
WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern.
- Visually inspect for obvious signs of electrical damage.VISUAL INSPECTION CHART
Electrical - Bussed electrical center (BEC) fuse(s):
- 42 (15A) (no communication with PCM)
- 45 (10A) (no communication with PCM)
- 56 (20A) (no communication with audio control module [ACM], satellite digital audio receiver system [SDARS] module)
- 59 (30A) (no communication with SJB)
- 63 (30A) (no communication with SJB)
- 65 (30A) (no communication with ABS module)
- 67 (30A) (no communication with SJB)
- Smart junction box (SJB) fuse(s):
- 6 (5A) (no communication with ACM)
- 8 (10A) (no communication with instrument cluster [IC], no power to scan tool)
- 16 (5A) (no communication with IC)
- 17 (10A) (no communication with restraints control module [RCM])
- 18 (10A) (no communication with ABS module)
- 19 (5A) (no communication with IC, PCM)
- Data link connector (DLC)
- Wiring harness
- Wiring, terminals or connectors
- Bussed electrical center (BEC) fuse(s):
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the scan tool to the DLC.
If the scan tool does not communicate with the VCM:
- Check the VCM connection to the vehicle.
- Check the scan tool connection to the VCM.
- Go to Pinpoint Test L , to diagnose no power to the scan tool.
- Carry out the network test.
- If the network test passes, retrieve and record the continuous memory DTCs and proceed to Step 6.
- If the network test fails, go to Symptom Chart to identify the module not communicating.
- If the DTCs retrieved are related to the concern, go to DTC Charts. For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in MULTIFUNCTION ELECTRONIC MODULES .
- If no DTCs related to the concern are retrieved, go to Symptom Chart .
NOTE:
Make sure to use the latest scan tool software release.
NOTE:
The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.
NOTE:
During the network test, the scan tool will first attempt to communicate with the PCM, after establishing communication with the PCM, the scan tool will then attempt to communicate with all other modules on the vehicle.