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Symptom: *CHECKING A/C SYSTEM OPERATION WITH NO DTC’S POSSIBLE CAUSES A/C CLUTCH RELAY OUTPUT CIRCUIT OPEN A/C COMPRESSOR CLUTCH GROUND CIRCUIT OPEN FUSED B(+) CIRCUIT OPEN A/C CLUTCH COIL A/C SELECT CIRCUIT OPEN REFRIGERATION SYSTEM NOT PROPERLY CHARGED A/C REQUEST CIRCUIT OPEN CLUTCH CYCLING SWITCH HIGH PRESS CUT-OFF SWITCH LOW PRESSURE SWITCH A/C CLUTCH RELAY TEST ACTION APPLICABILITY 1 Ignition on, engine not running. t, read DTC’s. Is there an A/C Clutch Relay DTC? All Yes → No → 2 Turn the ignition off. All Yes → No → Repair the open A/C compressor clutch ground circuit. 3 Ignition on, engine not running. t, read the A/C Select status. Turn the A/C Switch on and off a few times. All Yes → No → Repair the open A/C Select Circuit. 265 HEATING & A/C |