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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 2.0L - DTCS P1128-00 To P1E39-00 >> DTC Troubleshooting >> P164E-00-A/C Clutch Relay Control Range/Performance >> Possible Causes

Possible Causes

Possible Causes
A/C CLUTCH RELAY STUCK CLOSED - WELDED CONTACTS
A/C CLUTCH RELAY STUCK OPEN - BURNT CONTACTS
FUSED B(+) CIRCUIT OPEN OR HIGH RESISTANCE
A/C CLUTCH CONTROL OUTPUT CIRCUIT OPEN
A/C CLUTCH GROUND CIRCUIT OPEN
A/C CLUTCH CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE
A/C CLUTCH CONTROL OUTPUT CIRCUIT SHORTED TO GROUND
LOW A/C REFRIGERANT
A/C COMPRESSOR CLUTCH FACEPLATE - NO GAP
A/C COMPRESSOR CLUTCH FACEPLATE - EXCESSIVE GAP
A/C COMPRESSOR CLUTCH COIL
COMPRESSOR CLUTCH PULLEY HUB SNAP RING BROKEN OR MISSING
FACE PLATE SHAFT KEY SHEARED, MISSING OR BROKEN
COMPRESSOR NOT PUMPING
FROZEN COMPRESSOR
A/C CLUTCH RELAY
POWERTRAIN CONTROL MODULE (PCM)