LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2009 >> Edge SE, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1675 (Module Communications Network) >> Diagnostic Tests >> Communications Network >> Inspection and Verification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection and Verification

WARNING: This page is about a different car, the 2009 Mercury Sable, 2009 Ford Taurus X, and 2009 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern.
  2. Visually inspect for obvious signs of electrical damage.
    VISUAL INSPECTION CHART

    Electrical
    • Battery junction box (BJB) fuse(s):
      • 23 (10A) (no communication with the PCM)
      • 29 (30A) (no communication with the liftgate/trunk module [LTM])
      • 32 (30A) (no communication with the driver seat module [DSM])
      • 38 (10A) (no communication with the ABS module)
      • 47 (15A) (no communication with the PCM)
    • Smart junction box (SJB) fuse(s):
      • 3 (15A) (no communication with the accessory protocol interface module [APIM], satellite digital audio receiver system [SDARS] module, rear entertainment module [RETM])
      • 5 (10A) (no communication with the SJB)
      • 11 (10A) (no communication with the 4X4 control module)
      • 12 (7.5A) (no communication with the DSM)
      • 13 (5A) (no communication with the steering effort control module [SECM])
      • 14 (10A) (no communication with the LTM)
      • 15 (10A) (no communication with the heating ventilation air conditioning [HVAC] module)
      • 20 (15A) (no power to scan tool)
      • 26 (10A) (no communication with the instrument cluster [IC])
      • 29 (5A) (no communication with the IC)
      • 32 (10A) (no communication with the restraints control module [RCM])
      • 35 (10A) (no communication with the parking aid module [PAM], SECM)
      • 37 (10A) (no communication with the HVAC module)
      • 39 (20A) (no communication with the audio control module [ACM])
      • 41 (15A) (no communication with the ACM)
      • 46 (7.5A) (no communication with the RCM, occupant classification system module [OCSM])
    • Data link connector (DLC)
    • Wiring harness
    • 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 Tables. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
  7. If no DTCs related to the concern are retrieved, go to Symptom Chart .
scientia non olet · About LEMON Manuals