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 MANUALSMERCURY1996TRACER L4-116 1.9L SOHCREPAIR AND DIAGNOSISRESTRAINTS AND SAFETY SYSTEMSAIR BAG SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSNO AIRBAG INDICATOR - INOPERATIVE INDICATOR CIRCUITTEST NOTES
1996 Mercury Tracer L4-116 1.9L SOHC
Test Notes
1996 Mercury Tracer L4-116 1.9L SOHCSECTION Test Notes
Normal Operation
The air bag warning indicator is designed to illuminate for six ± two seconds when the ignition switch is turned to the ON position. This initial six seconds of air bag warning indicator illumination (continuous lamp) is considered normal operation and is called "prove out" of the air bag warning indicator.
The air bag diagnostic monitor requires power at Pin 1 in order to energize the air bag warning indicator circuit. If the air bag warning indicator circuit is open or if the air bag diagnostic monitor does not have ignition voltage at Pin 1, then the air bag warning indicator will not light.
If the computer in the air bag diagnostic monitor detects an open in the air bag warning indicator circuit and if another system fault exists, then the warning indicator will turn on its internal tone generator (beeper). The beep pattern is five sets of five beeps. The pattern is repeated every 30 minutes while the ignition switch is in the ON position. The five beeps do not indicate a code five or any other code. The air bag warning indicator circuitry must be repaired before the fault code can be read.
Possible Causes
A no air bag warning indicator condition can be caused by:
1. A burned out miniature bulb or open wiring in the air bag warning indicator circuit.
2. Loss of ignition voltage at Pin 1 of the air bag diagnostic monitor.
The air bag warning indicator is designed to illuminate for six ± two seconds when the ignition switch is turned to the ON position. This initial six seconds of air bag warning indicator illumination (continuous lamp) is considered normal operation and is called "prove out" of the air bag warning indicator.
The air bag diagnostic monitor requires power at Pin 1 in order to energize the air bag warning indicator circuit. If the air bag warning indicator circuit is open or if the air bag diagnostic monitor does not have ignition voltage at Pin 1, then the air bag warning indicator will not light.
If the computer in the air bag diagnostic monitor detects an open in the air bag warning indicator circuit and if another system fault exists, then the warning indicator will turn on its internal tone generator (beeper). The beep pattern is five sets of five beeps. The pattern is repeated every 30 minutes while the ignition switch is in the ON position. The five beeps do not indicate a code five or any other code. The air bag warning indicator circuitry must be repaired before the fault code can be read.
Possible Causes
A no air bag warning indicator condition can be caused by:
1. A burned out miniature bulb or open wiring in the air bag warning indicator circuit.
2. Loss of ignition voltage at Pin 1 of the air bag diagnostic monitor.
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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.