Turbocharged Supra (7M-GTE Engine)
- Turn ignition off. Unplug 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. See Fig 1.
- If voltage is present, turn ignition off. Plug in ignition module 6-pin connector. Unplug ignition module 4-pin connector. Disconnect each ignition coil from its connector.
- Turn ignition switch to "ON" position. Connect ohmmeter between terminal No. 2 of third ignition coil and ground. Using a 3-volt dry cell battery, apply 3 volts to terminal No. 2 of 4-pin connector. With 3 volts applied, check that ohmmeter indicates momentary continuity.
- Connect ohmmeter between terminal No. 2 of first ignition coil and ground. Apply 3 volts to terminal No. 4 of 4-pin connector. With 3 volts still applied to terminal No. 4, also apply 3 volts to terminal No. 2. Check that ohmmeter indicates momentary continuity.
- Connect ohmmeter between terminal No. 2 of second ignition coil and ground. Apply 3 volts to terminal No. 3 of 4-pin connector. With 3 volts still applied to No. 3, also apply 3 volts to terminal No. 2. Ensure ohmmeter indicates momentary continuity.
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