AC–62 AIR CONDITIONING SYSTEM – TROUBLESHOOTING Compressor Circuit CIRCUIT DESCRIPTION The A/C amplifier outputs the magnetic clutch ON signal from terminal MGC to the ECM. When the ECM receives this signal, it sends a signal from terminal ACMG and switches the air conditioning magnetic clutch relay ON, thus turning the air conditioning compressor magnetic clutch ON. WIRING DIAGRAM HTR Fuse R-L R/B No.2 3 1 A/C Magnetic Clutch Relay 5 2 W-G EA1 W-G E10 2 23 ACMG ECM 34 E10 A/C 31 II1 L-R L-R 6 A12 MGC A/C Amplifier L 1 EA1 L L 10 II1 L 7 A12 A/C IN 4 Compressor (A/C Magnetic Clutch) N09824