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POWER SUPPLY AND GROUND CIRCUIT EC-137 C D E F G H I J K L M A EC 4. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten two ground screws. OK or NG OK >> GO TO 5. NG >> Repair or replace ground connections. 5. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I 1. Disconnect ECM harness connector. 2. Check harness continuity between ECM terminals 156, 159, 165, 168 and ground. 3. Also check harness for short to power. OK or NG OK >> GO TO 7. NG >> GO TO 6. 6. DETECT MALFUNCTIONING PART Check the following. ● Joint connector-29 ● Harness for open or short between ECM and ground >> Repair open circuit or short to power in harness or connectors. PBIB1118E Continuity should exist. |