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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 |
|
| Tercel Sedan |
White/Red |
| Tercel Wagon |
White/Blue |
- 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.
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