Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY1996SABLE GS, 4D WAGON, AX4NREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 32 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)DIAGNOSTIC TESTSTEST A - MODULE COMMUNICATION ERRORTEST PROCEDURE
1996 Mercury Sable GS, 4D Wagon, AX4N
Test Procedure
1996 Mercury Sable GS, 4D Wagon, AX4NSECTION Test Procedure
WARNING: This page is about a different car, the 1997 Mercury Sable and 1997 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
- Check For Ignition Voltage
Deactivate system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Disconnect air bag diagnostic monitor. Turn ignition switch to RUN position. Using voltmeter connected to known good ground, connect second lead to C276-6, circuit 298 (Purple/Orange wire). If voltage measured is B+, go to next step. If voltage is not as specified, service circuit 298 (Purple/Orange wire) for open. Go to step 6). - Check Circuit 57 (Black) For Open
Using an ohmmeter connected to known good ground, connect second lead to terminal C276-18, circuit 57 (Black wire) and measure resistance to ground. If resistance is less than 3 ohms, go to next step. If resistance is not as specified, service circuit 57 (Black wire) for open. Go to step 6). - Check For Battery Voltage
Using an ohmmeter connected to known good ground, connect second lead to terminal C276-14, circuit 609 (Orange/Yellow wire) of air bag diagnostic monitor connector. If voltage measure is B+, go to step 6). If voltage is not as specified, go to next step. - Check Battery Fuses
Deactivate system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Check fuse No. 16 (10A) in fuse junction panel. If fuse is open, go to next step. If fuse is not open, service circuit 609 (Orange/Yellow wire) for open. Go to next step 6).WARNING: Certain fault conditions (DTC B1913 or B1914) may cause air bag diagnostic monitor to intentionally open fuse No. 4 (10A) to disarm SRS. DO NOT substitute another fuse value for 10A fuse. Any other fuse value may cause future disarming failure and danger to occupants of vehicle. Once air bag diagnostic monitor has disarmed SRS, it will not attempt to do so again until appropriate fault code (DTC B1913 or B1914) has been cleared. Do not reactivate system until all fault codes have been serviced and repaired. - Check For Short In Harness
Replace open fuse. If fuse does not open again, go to next step. If fuse opens again, service circuit 609 (Orange/Yellow wire) for short to ground. Go to next step. - Check Module Communication
Reconnect system components. Turn ignition switch to RUN position. If air bag diagnostic monitor communicates, reactivate system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Check AIR BAG warning light for proper system function. See SYSTEM OPERATION CHECK . If air bag diagnostic monitor does not communicate, go to TEST E - DATA LINK DIAGNOSTIC TEST FAILURE/AIR BAG DIAGNOSTIC MONITOR COMMUNICATION FAULT.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.