LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Air Bag Restraint System >> Diagnostic Tests >> Code 21 - SAFING Sensor Not Mounted To Vehicle Properly >> Test Procedure

Test Procedure

  1. Verify Condition

    Turn ignition on. Check for fault codes. If Code 21 is flashing, go to step 2). If Code 21 is not flashing, check connectors, wiring, splices, and crimps for an intermittent problem. DO NOT proceed with diagnostic test unless code is flashing. Doing so will result in needless replacement of system components.

  2. Check Safing Sensor Ground

    Deactivate air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM  . Disconnect negative battery cable. Measure resistance between terminals No. 3 (Black/White wire) and No. 16 (Dark Blue/White wire) of diagnostic monitor connector. If resistance is more than 2 ohms, go to step 3). If resistance is less than 2 ohms, replace diagnostic monitor.

  3. Check Safing Sensor Circuit

    Disconnect safing sensor. Safing sensor is located behind right side kick panel. Check resistance between circuit No. 613 (Dark Blue/White wire) of safing sensor connector and safing sensor housing. See Figure . If resistance is more than 2 ohms, go to step 4). If resistance is less than 2 ohms, locate and repair high resistance or open in circuit No. 613 (Dark Blue/White wire). Reconnect safing and diagnostic monitor connectors.

  4. Check Safing Sensor

    Remove safing sensor from vehicle. Clean safing sensor mounting surfaces. Install safing sensor. Check resistance between ground and circuit No. 613 (Dark Blue/White wire) of safing sensor connector. If resistance is less than 2 ohms, cleaning sensor mounting surfaces has corrected the problem. Reconnect safing and diagnostic monitor connectors. If resistance is more than 2 ohms, replace safing sensor.
scientia non olet · About LEMON Manuals