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10 DETECT MALFUNCTIONING PART Check the following. I Harness connectors M787, F66 (LHD models) I Harness for open or short between ECM and ECM relay E Repair open circuit or short to ground or short to power in harness or connectors. 11 CHECK ECM POWER SUPPLY CIRCUIT-IV 1. Check harness continuity between ECM terminals 56, 61, 116 and ECM relay terminal 5. Refer to Wiring Diagram. Continuity should exist. 2. Also check harness for short to ground and short to power. OK or NG OK E GO TO 13. NG E GO TO 12. 12 DETECT MALFUNCTIONING PART Check the following. I Harness connectors M787, F66 (LHD models) I Harness for open or short between ECM and ECM relay E Repair open circuit or short to ground or short to power in harness or connectors. 13 CHECK ECM RELAY 1. Apply 12V direct current between ECM relay terminals 1 and 2. SEF296X OK or NG OK E GO TO 14. NG E Replace ECM relay. TROUBLE DIAGNOSIS FOR POWER SUPPLY ZD30DDTi Main Power Supply and Ground Circuit EC-85 |