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POWER SUPPLY AND GROUND CIRCUIT EC-157 [VQ35DE] C D E F G H I J K L M A EC 8. CHECK ECM POWER SUPPLY CIRCUIT-III 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Check voltage between ECM terminals 119, 120 and ground OK or NG OK >> GO TO 15. NG (Battery voltage does not exist.)>>GO TO 9. 12. 9. CHECK ECM POWER SUPPLY CIRCUIT-IV 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Check voltage between ECM terminal 111 and ground with OK or NG OK >> GO TO 10. NG >> GO TO 12. 10. CHECK ECM POWER SUPPLY CIRCUIT-V 1. Disconnect ECM harness connector. 2. Disconnect IPDM E/R harness connector E7. 3. Check harness continuity between ECM terminals 119, 120 and IPDM E/R terminal 18. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 18. NG >> GO TO 11. 11. DETECT MALFUNCTIONING PART Check the following. ● Harness or connectors E108, M15 ● Harness for open or short between ECM and IPDM E/R >> Repair open circuit or short to ground or short to power in harness or connectors. Voltage: After turning ignition switch OFF, battery PBIB1630E Voltage: Battery voltage PBIB1191E Continuity should exist. |