LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2009 >> Focus SEL, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Module Communications Network >> Diagnostic Tests >> Communications Network >> Inspection and Verification

Inspection and Verification

  1. Verify the customer concern.
  2. Visually inspect for obvious signs of electrical damage.
    VISUAL INSPECTION CHART

    Electrical
    • Battery junction box (BJB) fuse(s):
      • 5 (10A) (no communication with PCM)
      • 28 (15A) (no communication with PCM)
      • 35 (10A) (no communication with PCM)
    • Smart junction box (SJB) fuse(s):
      • 3 (15A) (no communication with satellite digital audio receiver system [SDARS] module)
      • 5 (10A) (no communication with SJB)
      • 13 (5A) (no communication with accessory protocol interface module [APIM])
      • 15 (10A) (no communication with HVAC module)
      • 26 (10A) (no communication with instrument cluster [IC])
      • 28 (5A) (no communication with audio control module [ACM])
      • 29 (5A) (no communication with IC)
      • 31 (10A) (no communication with ABS module)
      • 32 (10A) (no communication with restraints control module [RCM])
      • 37 (10A) (no communication with HVAC module)
      • 39 (20A) (no communication with ACM, front controls interface module [FCIM], front display interface module [FDIM])
      • 43 (10A) (no communication with IC)
      • 46 (7.5A) (no communication with occupant classification system module [OCSM])
    • Data link connector (DLC)
    • Wiring, terminals or connectors
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
    4. 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.
  4. 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 Q , to diagnose no power to the scan tool.
    5. 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.
  5. 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.
  6. If the DTCs retrieved are related to the concern, go to DTC Charts . For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES .
  7. If no DTCs related to the concern are retrieved, go to Symptom Chart .
scientia non olet · About LEMON Manuals