WARNING: Deactivate air bag system before performing any service operation. For 1995 Tercel, see AIR BAG RESTRAINT SYSTEM , for 1996 Tercel, see AIR BAG RESTRAINT SYSTEM article in ACCESSORIES & EQUIPMENT.

Disconnect negative battery cable. Remove driver's lower instrument panel cover. Remove upper and lower steering column covers if needed. Locate ignition switch wiring harness 8-pin connector. See Fig 1-Fig 2 .
With ignition switch in LOCK position, there should be no continuity between any terminals. With ignition switch in ACC position, there should be continuity between terminals No. 2 and 3. With ignition switch in ON position, there should be continuity between terminals No. 2, 3 and 4, and between terminals No. 6 and 7.
With ignition switch in START position, there should be continuity between terminals No. 1, 2 and 4, and between terminals No. 6, 7 and 8. If continuity is not as specified, replace switch.

Fig 1: Identifying Ignition Switch 10-Pin Connector

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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.

Safety Warning

Ignition Switch Continuity Test

Use the Manual With the Right Hardware

When to See a Mechanic

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