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HOMESERVICE MANUALSSATURN1997SC1 AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSA/C-HEATER SYSTEM - MANUALTROUBLE SHOOTINGA/C COMPRESSOR CLUTCH STAYS ENGAGED
1997 Saturn SC1 Automatic

A/C Compressor Clutch Stays Engaged

1997 Saturn SC1 AutomaticSECTION A/C Compressor Clutch Stays Engaged
  1. Turn ignition switch to OFF position. Locate A/C relay in underhood junction block and install a known good unit (keep old relay). Turn ignition switch to ON position. If A/C compressor clutch stays engaged, go to next step. If A/C compressor clutch disengages, discard old relay. Ensure proper compressor operation.
  2. Turn ignition switch to OFF position. Reinstall old relay. Disconnect underhood junction block Black 68-pin connector. Turn ignition switch to ON position. If A/C compressor clutch stays engaged, go to next step. If A/C compressor clutch disengages, use scan tool to verify A/C option has been selected. Check for short to ground in Gray wire between PCM Light Blue 32-pin connector terminal "J1D01" and underhood junction block Black 68-pin connector terminal "C12". If Gray wire is okay, replace PCM. Ensure proper compressor operation.
  3. Check for short to battery voltage in Dark Green wire between underhood junction block Gray 68-pin connector terminal "F8" and A/C compressor clutch. If Dark Green wire is okay, replace A/C compressor clutch. Ensure proper compressor operation.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.