Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSATURN1992SL1 AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 14 (A/C-HEATER SYSTEM)TROUBLE SHOOTINGECC SYSTEM CHECK
1992 Saturn SL1 Automatic
ECC System Check
1992 Saturn SL1 AutomaticSECTION ECC System Check
WARNING: This page is about a different car, the 1995 Cadillac Seville, 1995 Cadillac Eldorado, and 1995 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
- Correct any obvious faults such as low coolant level, coolant leaks, faulty aspirator hose, refrigerant leaks, or vacuum leaks. Ensure system operates as described in AIR DELIVERY MODE CONTROL under OPERATION. See Figure. If system does not operate as described, go to next step.
- Turn ignition on with engine off. Enter self-diagnostics and check for trouble codes. See ACP SELF-DIAGNOSTICS under TESTING. If any trouble codes are stored, repair cause of codes, and then clear codes. See SERVICE MODE OPERATION & EXITING DIAGNOSTICS under TESTING.
- If no trouble codes are displayed, exit self-diagnostics. See SERVICE MODE OPERATION & EXITING DIAGNOSTICS under TESTING. Start and warm engine to normal operating temperature. Outside temperature must be greater than 50°F (10°C). Set temperature to 60°F (16°C) and blower to high speed on Climate Control Center (CCC).
- If compressor and/or blower do not operate, or interior temperature is not as selected, use ECC trouble shooting charts to diagnose problem by symptom. See ECC TROUBLE SHOOTING CHART SYMPTOM REFERENCE table.
ECC TROUBLE SHOOTING CHART SYMPTOM REFERENCE
| Complaint/Symptom | (1) Chart No. | Figure | |||
|---|---|---|---|---|---|
| No Compressor Operation | 1 | Figure & Figure | |||
| No Blower Operation | 2 | Figure & Figure | |||
| Blower & Compressor Operate, But: | |||||
| Hot Air/No Cooling | 3 | Figure | |||
| Improper Air Delivery | 4 | Figure & Figure | |||
| Improper Temperature Control | 5 | Figure & Figure | |||
| Rear Defogger On Continuously | 6 | Figure & Figure | |||
| Rear Defogger Inoperative | 7 | Figure & Figure | |||
| Rear A/C Blower Speed Incorrect | 8 | Figure & Figure | |||
| Rear A/C Blower Inoperative | 9 | Figure & Figure | |||
| Refrigeration System Check | 10 | Figure | |||
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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.