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EC-94 < COMPONENT DIAGNOSIS > [VQ40DE] POWER SUPPLY AND GROUND CIRCUIT 3. Check harness continuity between ECM terminals 119, 120 and IPDM E/R terminal 4. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 16. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 11. CHECK ECM POWER SUPPLY CIRCUIT-VI 1. Disconnect ECM harness connector. 2. Disconnect IPDM E/R harness connector E119. 3. Check harness continuity between ECM terminal 111 and IPDM E/R terminal 7. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 12. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 12. CHECK 20A FUSE 1. Disconnect 20 A fuse (No.53) from IPDM E/R. 2. Check 20 A fuse. OK or NG OK >> GO TO 16. NG >> Replace 20A fuse. 13. CHECK GROUND CONNECTIONS Loosen and retighten three ground screws on the body. Refer to . OK or NG OK >> GO TO 14. NG >> Repair or replace ground connections. 14. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II 1. Check harness continuity between ECM terminals 1, 115, 116 and ground. 2. Also check harness for short to power. OK or NG OK >> GO TO 16. NG >> GO TO 15. 15. DETECT MALFUNCTIONING PART Check the following. Continuity should exist. Continuity should exist. BBIA0539E Continuity should exist. 2009 Pathfinder |