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p A CHECK VOLTAGE BETWEEN ENGINE p 2 , p 3 and ground with CONSULT-II or tester. Voltage: Battery voltage OK E NG Check the following: ● 15A fuse ● Harness for open or If NG, replace fuse or repair CHECK OUTPUT SIGNAL CIRCUIT. 325 and ECM relay connector terminal p 1 . Continuity should exist. If OK, check harness for short-circuit. OK E NG ● Check harness connec- E43 , F2 Repair harness or connec- CHECK ECM RELAY. relay connector terminals p 1 and p 2 . 2. Check continuity between engine control module relay connector terminals p 3 and p 5 . 12V ( p 1 - p 2 ) applied: Continuity exists. No voltage applied: No continuity OK E NG Replace ECM relay. CHECK GROUND CIRCUIT. connector terminals 104 , 105 , 106 and engine ground. Continuity should exist. If resistance is too high, loosen, clean and OK E NG Repair harness or connec- Check ECM pin terminals for damage and INSPECTION END YEC352 ECM relay NEF189A ECM relay YEC354 ECM relay NEF190A NEF399 Engine ground H H H H H H TROUBLE DIAGNOSIS FOR POWER SUPPLY CD20T Main Power Supply and Ground Circuit (Cont’d) EC-61 |