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DIAGNOSTIC PROCEDURE 1 INSPECTION START Start engine. Yes or No Yes E GO TO 14. No E GO TO 2. 2 CHECK ECM POWER SUPPLY CIRCUIT-I 1. Turn ignition switch “ON”. SEF397Y OK or NG OK E GO TO 4. NG E GO TO 3. 3 DETECT MALFUNCTIONING PART Check the following. I 10A fuse I Harness for open or short between ECM and fuse E Repair open circuit or short to ground or short to power in harness or connectors. 4 CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch “OFF”. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK E GO TO 6. NG E GO TO 5. TROUBLE DIAGNOSIS FOR POWER SUPPLY ZD30DDTi Main Power Supply and Ground Circuit EC-82 |