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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 25 (1.4L 16-Valve - DTCS P0354-00 To P1021-00 - 500) >> DTC Troubleshooting >> P0645-00-A/C Control Circuit/Open >> Possible Causes

Possible Causes

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Possible Causes
A/C CLUTCH RELAY CONTROL CIRCUIT OPEN
A/C CLUTCH RELAY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .