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 MANUALSPLYMOUTH1994LASER RS TURBO, AWD, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC TESTINGFUEL SYSTEMCONTROL RELAY1.8L
1994 Plymouth Laser RS Turbo, AWD, Automatic
Control Relay: 1.8L
1994 Plymouth Laser RS Turbo, AWD, AutomaticSECTION 1.8L
- Remove control relay from vehicle. Control relay is located on right side of center console. Disconnect control relay connector. Using an ohmmeter, check for approximately 95 ohms of resistance between control relay terminals No. 3 and 5, and terminals No. 2and 5. See Fig 1 .
- Ensure approximately 35 ohms of resistance exists between control relay terminals No. 6 and 7. Ensure there is infinite resistance between terminals No. 1 and 4, and between terminals No. 2 and 4.
- Connect positive ohmmeter lead to terminal No. 6 and negative lead to terminal No. 8. Ensure there is infinite resistance. Reverse leads and ensure resistance is zero ohms.
- While grounding terminal No. 6 and applying battery voltage to terminal No. 8, ensure resistance between terminals No. 2 and 4 is zero ohms.
- While grounding terminal No. 6 and applying battery voltage to terminal No. 7, ensure resistance between terminals No. 1 and 4 is zero ohms.
- While grounding terminal No. 5 and applying battery voltage to terminal No. 2, ensure resistance between terminals No. 1 and 4 is zero ohms. Replace control relay if it does not test as described.
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.