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ATC-76 TROUBLE DIAGNOSIS 1. CHECK POWER SUPPLY FOR COMPRESSOR Disconnect compressor harness connector. OK or NG OK >> Check magnet clutch coil. 1. If NG, replace magnet clutch. Refer to . 2. Go to ATC-42, "FUNCTION CONFIRMATION PROCEDURE" and perform self-diagnosis STEP-4. Confirm that magnet clutch operation is usual. NG >> Disconnect A/C relay. And GO TO 2. 2. CHECK CIRCUIT CONTINUITY BETWEEN A/C RELAY AND COMPRESSOR OK or NG OK >> Check harness for short. And GO TO 3. NG >> Repair harness or connector. 3. CHECK POWER SUPPLY FOR A/C RELAY Disconnect A/C relay. OK or NG OK >> GO TO 4. NG >> Check power supply circuit and 10A (No.15) fuse at fuse block. Refer to EL-11, "POWER SUPPLY ROUTING". ● If OK, check for open circuit in wiring harness. Repair or replace as necessary. ● If NG, replace fuse and check wiring harness for short circuit. Repair or replace as necessary. 4. CHECK A/C RELAY AFTER DISCONNECTING IT Refer to . OK or NG OK >> Reconnect A/C relay. And GO TO 5. NG >> 1. Replace A/C relay. 2. Go to ATC-42, "FUNCTION CONFIRMATION PROCEDURE" and perform self-diagnosis STEP-4. Confirm that magnet clutch operation is usual. Terminal Voltage (+) (-) Compressor connector Terminal No. (Wire color) E32 1 (L/R) Ground Battery voltage RJIA0295E Terminal Continuity (+) (-) A/C relay con- nector Terminal No. (Wire color) Compressor connector Terminal No. (Wire color) E9 3 (L/R) E32 1 (L/R) Yes RJIA0793E Terminal Voltage (+) (-) A/C relay con- nector Terminal No. (Wire color) E9 1 (L/Y) Ground Battery voltage E9 5 (L/Y) RJIA0794E |