Test Procedure

Verify Condition

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

Check Circuit Resistance

Deactivate SRS. See DISABLING & ACTIVATING AIR BAG SYSTEM . Connect NGS tester to DLC. Perform ON-DEMAND SELF-TEST . If DTC B1932 is retrieved, go to next step. If DTC B1933 is not retrieved, go to step 8).

Check Resistance Circuit 607 To 616

Disconnect air bag diagnostic monitor. Set ohmmeter to lowest scale (200k/ohms or AUTO). Zero ohmmeter by touching leads together. Record resistance reading. Remove plastic locking wedge from Gray harness connector C276 at air bag diagnostic monitor. Measure resistance between diagnostic monitor harness connector terminal C276-5, circuit 607 (Light Blue/Orange wire) and C276-4, circuit 616 (Pink/Black wire). Subtract reading found when zeroing ohmmeter. If resistance is greater than 3 ohms, go to next step. If resistance is less than 3 ohms, replace air bag diagnostic monitor. See DIAGNOSTIC MONITOR under REMOVAL & INSTALLATION. Reconnect, verify, and reactivate system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Go to step 8).

Check Circuit 607 For Open

Disconnect simulator from main harness. Use ohmmeter to connect one lead to circuit 607 (Light Blue/Orange wire) at passenger-side air bag module harness connector. Connect second lead to terminal C276-5, circuit 607 (Light Blue/Orange wire). If resistance is less than 1 ohm, repair circuit 616 (Pink/Black wire) for open. Reconnect, verify, and reactivate system. Go to step 8). If resistance is more than 1 ohm, repair circuit 607 (Light Blue/Orange wire) for open. Reconnect, verify, and reactivate system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Go to step 8).

Check For DTC Service

Deactivate system. See 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.

Check Air Bag Connections

Disconnect air bag diagnostic monitor. Set ohmmeter to lowest scale (200K 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 C276-4, circuit 616 (Pink/Black wire) and C276-5, circuit 607 (Light Blue/Orange wire) while wiggling wires at passenger-side air bag module connector where it mates to harness. Subtract reading found when zeroing ohmmeter. Visually inspect wiring at passenger-side air bag connector where it mates to clockspring for signs of corrosion in connectors and poor crimps or bad connections. If resistance is less than 3 ohms or no wiring problems present, go to next step. If resistance is more than 3 ohms or other problems present, replace passenger-side air bag module if wiring problems or high resistance is found. Go to step 8).

Check Circuits 607 and 616

Inspect circuit 607 (Light Blue/Orange wire) and 616 (Pink/Black wire) for pinched or chafed wires leading to high resistance. If problems are noted, repair as necessary and go to next step. If no problems are noted, re-examine fault code and look for causes of intermittent high resistance or open in appropriate circuits. Attempt to recreate hard faults by driving vehicle, flexing wiring harnesses, etc. Repair intermittent problems and go to next step. If no problems are noted, go to next step.

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. See DISABLING & ACTIVATING AIR BAG SYSTEM .