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16 CHECK ECM RELAY 1. Apply 12V direct current between relay terminals 1 and 2. SEC202BC 12V (1 - 2) applied: Continuity exists. OK or NG OK © GO TO 17. NG © Replace ECM relay. 17 CHECK GROUND 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 18. NG © Repair open circuit or short to ground or short to power in harness or connectors. 18 CHECK INTERMITTENT INCIDENT Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-QG-102. © INSPECTION END TROUBLE DIAGNOSIS FOR POWER SUPPLY QG16 I 18DE Main Power Supply and Ground Circuit (Cont’d) EC-109 |