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Home >> Isuzu >> 1984 >> Impulse Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> I-TEC Control System >> Testing >> Test 5 - Starter Signal (Code 22)
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Test 5 - Starter Signal (Code 22)

Disconnect MCU control terminals at MCU. Connect voltmeter positive lead to terminal 25 and negative lead to ground. Check for starter signal when ignition switch is turned to start position. If no signal, check circuits to ignition switch and MCU.

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