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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 142 (Supplemental Restraint System) >> Diagnostic Tests >> Air Bag And Safety Belt PRETENSIONER Supplemental Restraint System (SRS) >> Inspection And Verification

Inspection And Verification

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: If equipped with fire suppression system, refer to FIRE SUPPRESSION SYSTEM article for Important Safety Warnings. Failure to follow this instruction may result in serious personal injury.
  1. Verify the customer concern by checking the air bag warning indicator in the Instrument Cluster (IC) module. Refer to Prove Out Procedure .
  2. Visually inspect for obvious signs of mechanical or electrical damage. Do not disconnect electrical connectors until directed to do so within the pinpoint test.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Damaged Restraints Control Module (RCM) or loose mounting
    • Damaged front impact severity sensor(s) or loose mounting
    • Damaged side impact sensor(s) or loose mounting
    • Damaged or disconnected Passenger Air Bag Deactivation (PAD) indicator
    • Damaged or loose mounting of a Occupant Classification Sensor (OCS) system component
    • Open Central Junction Box (CJB) fuse 22 (10A)
    • Damaged wiring harness
    • Loose, damaged or corroded connectors
    • Circuitry open/shorted
    • Damaged shorting bars
    • Loose, damaged or pinched passenger seat wire harness
  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.
  4. If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
    5. NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.
  5. 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.
    • refer to MODULE COMMUNICATIONS NETWORK article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
  6. If the scan tool does not communicate with the vehicle:
    • verify the ignition key is in the ON position.
    • verify the scan tool operation with a known good vehicle.
    • refer to MODULE COMMUNICATIONS NETWORK article to diagnose no response from the PCM.
  7. Carry out the network test.
    • If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK article.
    • If the network test passes, retrieve and record on-demand and continuous memory DTCs from the RCM.
  8. If the DTCs retrieved are related to the concern, go to the Supplemental Restraint System (SRS) DTC Chart. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
  9. If no DTCs related to the concern are retrieved, go to Symptom Chart .
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