System Testing
- Start engine. Ensure coolant temperature is below 109°F (43°C). Using a voltmeter, ensure voltage is present between positive terminal and body ground. See POSITIVE TERMINAL WIRE COLORS table for correct wire color application. Ensure voltmeter probe is inserted from rear of connector. See Fig 1.POSITIVE TERMINAL WIRE COLORS
Application Wire Colors Corolla FWD White/Red Corolla RWD White/Blue Pickup, 4Runner (1) Tercel Sedan White/Red Tercel Wagon White/Blue (1) Wire color not available. - Warm engine to above 131°F (55°C). Ensure no voltage is present. If no problem is found, system is okay. If system fails to operate as specified, perform following component tests.