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Diagnosis & Testing: Self-Diagnostics

WARNING: This page is about a different car, the 1995 Ford Pickup, 1995 Ford F-Super Duty, 1995 Ford Cab & Chassis, and 1995 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.

The system readiness indicator light (AIR BAG warning light) is used in diagnosing malfunctions or faults in the air bag system. A fault code will be displayed when the ignition switch is in the RUN position and the diagnostic monitor detects a system fault. Certain faults may not be displayed until approximately 30 seconds after ignition switch has been turned to RUN position. This is the amount of time required for diagnostic monitor to test and verify all system faults.

AIR BAG warning light flashes a series of 2-digit fault codes. For example, a fault Code 32 would be displayed in the following manner: flash flash flash, one-second pause, flash flash, 3-second pause. After one cycle, the code would be repeated.

The coded fault feature is prioritized so that if 2 or more different fault codes occur at the same time, the highest priority fault indication will be shown until corrected, using appropriate diagnostic test procedure. Identify fault code and perform appropriate diagnostic test. See FAULT CODE IDENTIFICATION  table. See DIAGNOSTIC TESTS. Once the higher priority fault has been corrected, check AIR BAG warning light to see if another fault exists. See SYSTEM OPERATION CHECK  .

If a system fault exists and AIR BAG warning light is malfunctioning, a series of 5 sets of 5 beeps will be heard, indicating service is needed. The number of beeps does not indicate a fault code. See TEST N  under DIAGNOSTIC TESTS.

FAULT CODE IDENTIFICATION

Fault Code Description
AIR BAG Warning Light Does Not Light Inoperative AIR BAG Warning Light Circuit
AIR BAG Warning Light Stays On Diagnostic Monitor Disconnected Or Faulty
12 Low Battery Voltage
13 Air Bag Circuit Shorted To Ground
14 Front Impact Sensor Circuit Shorted To Ground
21 Safing Sensor Not Mounted To Vehicle Properly
22 Safing Sensor Shorted to Battery Power
23 Open Circuit In Safing Sensor Feed Circuit
24 Safing Sensor Diagnostic Circuit Open Or Low Resistance In Front Impact Sensor
32 High Resistance Or Open In Driver-Side Air Bag Circuit
34 Low Resistance Or Short In Driver-Side Air Bag Circuit
41 High Resistance Or Open Right Front Impact Sensor Circuit
42 High Resistance Or Open Left Front Impact Sensor Circuit
44 Right Front Impact Sensor Not Mounted To Vehicle Properly
45 Left Front Impact Sensor Not Mounted To Vehicle Properly
51 Diagnostic Monitor Internal Thermal Fuse Open
52 Back-Up Power Supply Fault
53 Diagnostic Monitor Internal Fault
Tones AIR BAG Light Is Out & Another Fault Code Is Present
Rapid continuous flashing of AIR BAG warning light All Impact Sensors Disconnected