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Diagnostic Procedure 1 CHECK ELECTRONIC CONTROL FUEL INJECTION PUMP POWER SUPPLY CIRCUIT 1. Turn ignition switch “OFF”. MEC025E 3. Turn ignition switch “ON”. MEC977D Voltage: Battery voltage OK or NG OK E GO TO 3. NG E GO TO 2. 2 DETECT MALFUNCTIONING PART Check the following. I Harness connectors M787, F66 (LHD models) I Harness connectors F108, E225 I Harness connectors E220, E231 (LHD models) I Harness connectors M842, F135 (RHD models) I Harness for open or short between electronic control fuel injection pump and ECM I Harness for open or short between electronic control fuel injection pump and ECM relay E Repair open circuit or short to ground or short to power in harness or connectors. 3 CHECK ELECTRONIC CONTROL FUEL INJECTION PUMP GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch “OFF”. Continuity should exist. 3. Also check harness for short to ground and short to power. OK or NG OK E GO TO 5. NG E GO TO 4. DTC 1004 FUEL CUT SYSTEM1 ZD30DDTi EC-242 |