Switch Test: Camry

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1992 Toyota Tercel, 1992 Toyota Supra, 1992 Toyota Previa, 1992 Toyota Paseo, and 1992 Toyota MR2. However, it is still accessible from the selected car via links, so may be relevant.

Remove defogger switch. Using an ohmmeter, check for continuity between terminals No. 3 and 4 of switch. See Fig 1. Continuity should exist at all times.
With defogger switch on, check for continuity between terminals No. 1 and 5 of switch. Continuity should exist between terminals. With defogger switch off, no continuity should exist. If switch continuity is not as specified, replace switch.
To check switch indicator light operation, connect battery voltage to terminal No. 3 of switch, and ground terminal No. 4. Ensure defogger switch indicator light is on. If switch indicator light is not on, replace switch.

Fig 1: Defogger Switch Terminal ID (Except Corolla, MR2 & Supra)