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TROUBLESHOOTING AUTOMATIC AIR CONDITIONER 55B-43 INSPECTION PROCEDURE 2: The air conditioner does not work at all. <4G69> CIRCUIT OPERATION Possible causes • Improper amount of refrigerant • Malfunction of the A/C pressure sensor • Malfunction of the A/C compressor relay • Malfunction of the magnetic clutch • Malfunction of the A/C refrigerant temperature • Damaged the wiring harness or connectors • Malfunction of the automatic air conditioner Wire colour code A/C A/C A/C MAGNETIC A/C-ECU A/C PRESSURE IGNITION ENGINE- BATTERY RELAY |