AC–63 AIR CONDITIONING SYSTEM – TROUBLESHOOTING INSPECTION PROCEDURE 1 Check voltage between terminal A/C IN of A/C amplifier connector and body ground. ON Connect A/C IN BE3840 NO8801 P 1. Remove A/C amplifier with connectors still connected. 2. Start the engine. C Check voltage between terminal A/C IN of A/C amplifier connector and body ground when magnetic clutch is on and off by A/C switch. OK Magnetic Clutch Voltage ON 10 – 14 V OFF Below 1 V OK NG Go to step 4 . 2 Check air conditioning compressor magnetic clutch. 4 E01510 P Disconnect magnetic clutch connector. C Connect positive (+) lead connected to battery to magnetic clutch connector terminal 4. OK Magnetic clutch is energized. OK NG Repair air conditioning compressor magnetic clutch. 3 Check for open and short in harness and connector between air conditioner compressor and magnetic clutch relay (See page IN–30). OK NG Repair or replace harness or connector. Go to step 4 .