Ignition Module Test - Supra 7M-GTE Engine
- Disconnect ignition module 6-pin connector, module is located next to alternator. Turn ignition switch to the "ON" position. Check for battery voltage between terminal No. 3 and ground. Refer to Fig 1.
- If voltage is present, turn ignition off. Plug in ignition module 6-pin connector and unplug ignition module 4-pin connector. Disconnect each ignition coil from its connector.
- Turn ignition switch to the "ON" position. Connect an ohmmeter between terminal No. 2 of third ignition coil and ground. Using 2 flashlight (1.5 volt) batteries, apply 3 volts to terminal No. 2 of 4-pin connector. See Fig 1. With 3 volts applied, check that ohmmeter indicates momentary continuity.
- Connect an ohmmeter between terminal No. 2 of first ignition coil and ground. Apply 3 volts to terminal No. 4 of 4-pin connector. See Fig 1. With 3 volts applied, check that ohmmeter indicates momentary continuity.
- Connect an ohmmeter between terminal No. 2 of second ignition coil and ground. Apply 3 volts to terminal No. 3 of 4-pin connector. See Fig 1. With 3 volts applied, check that ohmmeter indicates momentary continuity.
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