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.
Section 996 (Ignition Switch & Key Unlock Warning System): Inspection
- INSPECT IGNITION SWITCH CONTINUITY SWITCH POSITION TESTER CONNECTION AND CONDITION DESCRIPTION
Switch position Tester connection Specified condition LOCK - No continuity ACC 2-3 Continuity ON 2-3-4 6-7 Continuity START 1-2-4 6-7-8 Continuity If continuity is not as specified, replace the switch.
- INSPECT IGNITION SWITCH CIRCUIT
Connect the switch connector and inspect the connector on wire harness side from the back side, as shown in Fig 2 .
TESTER CONNECTION AND SPECIFIED CONDITIONTester connection Condition Specified condition 2 - Ground Always Battery Positive Voltage 3 - Ground Ignition switch ACC or ON Battery Positive Voltage 4 - Ground Ignition switch ON Battery Positive Voltage 6 - Ground Ignition switch ON or START Battery Positive Voltage 7 - Ground Always Battery Positive Voltage 8 - Ground Ignition switch START Battery Positive Voltage If circuit is not as specified, inspect the circuits connected to other parts.
- INSPECT KEY UNLOCK WARNING SWITCH CONTINUITY SWITCH POSITION TESTER CONNECTION AND CONDITION DESCRIPTION
Switch position Tester connection Specified condition OFF (Key removed) 1-2 No continuity ON (Key set) 1-2 Continuity If continuity is not as specified, replace the switch.
- INSPECT KEY UNLOCK WARNING SWITCH CIRCUIT (See
KEY UNLOCK WARNING SWITCH CIRCUIT
)
Connect the switch connector and inspect the connector on wire harness side from the back side, as shown in Fig 4 .
TESTER CONNECTION AND SPECIFIED CONDITIONTester connection Condition Specified condition 1 - Ground Always Continuity If circuit is not as specified, inspect the circuits connected to other parts.
NO RELATED
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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.