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Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> External Pages >> Different car >> Section 244 (Supplemental Inflatable Restraint System - Air Bag Restraint System) >> Diagnostic Tests >> DTC B1933 - High Resistance Or Open In Passenger-Side Air Bag Circuit

DTC B1933 - High Resistance Or Open In Passenger-Side Air Bag Circuit

WARNING: This page is about a different car, the 1996 Ford Ranger and 1996 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Before proceeding, see SERVICE PRECAUTIONS . After servicing has been performed, recheck AIR BAG warning light. If system is okay, install air bag modules and reactivate air bag system.

  1. Verify Condition

    Connect NGS tester to DLC. Perform ON-DEMAND SELF-TEST. If DTC B1933 is retrieved, go to step 2). If DTC B1933 is not retrieved, go to step 5).

  2. Check Circuit Resistance

    Deactivate air bag system. See COMPLETE SYSTEM DEACTIVATION under DISABLING & ACTIVATING AIR BAG SYSTEM . Connect NGS tester to DLC. Perform ON-DEMAND SELF-TEST. If DTC B1933 is retrieved, go to next step. If DTC 1933 is not retrieved, go to step 8).

  3. Check Circuit 607-To-616

    Reconnect diagnostic monitor. Set ohmmeter to lowest scale (200 ohms or AUTO). Zero ohmmeter by touching leads together and record reading. Remove plastic locking wedge from Gray harness side connector at diagnostic monitor harness connector. Measure resistance between diagnostic harness connector terminals C1-5 and C1-4. See Figure. Subtract reading found when zeroing ohmmeter. If resistance is less than 3 ohms, replace air bag diagnostic monitor. Reconnect system. Verify system. Reactivate system and go to step 8). If resistance is more than 3 ohms, go to next step.

  4. Check Air Bag Connections

    Disconnect simulator from main harness. Connect ohmmeter lead to circuit 607 (Light Blue/Orange wire) at passenger-side air bag module harness connector. Connect other lead to terminal C1-5. See Figure. If resistance is less than 3 ohms, repair circuit 616 (Pink/Black wire) for open. Reconnect system. Verify system. Reactive system and go to step 8). If resistance is more than 3 ohms, repair circuit 607 (Light Blue/Orange wire) for open. Reconnect system. Verify system. Reactivate system and go to step 8).

  5. Check For DTC Service

    Deactivate system. See COMPLETE SYSTEM DEACTIVATION under DISABLING & ACTIVATING AIR BAG SYSTEM . If DTC B1933 has just been repaired, go to step 8). If DTC B1933 has not just been repaired, go to next step.

  6. Check Air Bag Connections

    Disconnect air bag diagnostic monitor. Set ohmmeter to lowest scale (200 ohms or AUTO). Zero ohmmeter by touching leads together and record reading. Remove plastic locking wedge from Gray harness side connector at base of steering column. Measure resistance between diagnostic monitor harness connector terminals C1-4 and C1-5 while wiggling wires at driver-side air bag module connector where it mates to harness. See Figure. Subtract reading found when zeroing ohmmeter. If resistance is more than 3 ohms or other problems are noted, replace passenger-side air bag module. Go to step 8). If resistance is less than 3 ohms, Go to next step.

  7. Check Circuits 607 and 616

    Inspect wiring and connections in circuits 607 (Light Blue/Orange wire) and 616 (Pink/Black wire) for poor crimps, corrosion, etc. that could cause high resistance. If problems are noted, repair problems and go to step 8). If no problems are noted, re-examine fault code and look for causes for intermittent faults. Correct any intermittent faults and go to step 8).

  8. Check For Other DTCs

    Connect NGS to DLC. If other DTCs are retrieved go to proper DTC test. If no other DTCs are retrieved, reactivate system and clear all DTCs.
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