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2 CHECK POWER SUPPLY 1. Stop engine. SEF949X OK or NG OK © GO TO 4. NG © GO TO 3. 3 DETECT MALFUNCTIONING PART Check the following. I 10A fuse I Harness connectors M62, F24 I Harness connectors F13, F51 I Harness for open or short between injector and fuse © Repair harness or connectors. 4 CHECK OUTPUT SIGNAL CIRCUIT 1. Turn ignition switch “OFF”. Refer to Wiring Diagram. Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK © GO TO 6. NG © GO TO 5. 5 DETECT MALFUNCTIONING PART Check the following. I Harness connectors F51, F13 I Harness for open or short between ECM and injector © Repair open circuit or short to ground or short to power in harness or connectors. GI MA EM LC FE CL MT AT AX SU BR ST RS BT HA SC EL IDX INJECTOR Diagnostic Procedure (Cont’d) EC-599 |