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 MANUALSSATURN1995SL1 AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSDIAGNOSISDIAGNOSTIC TESTSDTC 43 - FUEL PUMP RELAY GROUNDED/OPENDIAGNOSTIC PROCEDURE
1995 Saturn SL1 Automatic
Diagnostic Procedure
1995 Saturn SL1 AutomaticSECTION Diagnostic Procedure
- Record information from MALF history for DTC 43. Clear DTCs. Start and idle engine for 2 minutes. Retrieve DTCs. If DTC 43 is not present, problem is intermittent. If DTC 43 is present go to next step.
- Ensure engine is idling. Using test light, verify if voltage is present on at least one actuator fuse (TRS LP, TRS 2/TCC, TRS 3/4) at underhood junction block. If voltage is not present, repair Dark Green wire between fuel pump relay and junction block. If voltage is present, inspect connection at actuator. Repair as needed. If connection is okay, replace PCM.
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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.