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 MANUALSPLYMOUTH1994ACCLAIM V6-181 3.0L SOHCREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSMAIN RELAY (COMPUTER/FUEL SYSTEM)DESCRIPTION AND OPERATION
1994 Plymouth Acclaim V6-181 3.0L SOHC
Main Relay (Computer/Fuel System): Description and Operation
1994 Plymouth Acclaim V6-181 3.0L SOHCSECTION Description and Operation
Relay Locations:
PURPOSE
Relay supplies battery voltage to the ignition coil and fuel injector(s).
OPERATION
Ignition switch in the START or RUN position, and PCM is receiving reference signals from the distributor pick-up.
The Powertrain Control Module (PCM) activates the relay (by supplying a ground).
If the PCM does not receive a signal from the distributor pick-up, (engine not running), the PCM interrupts the relay ground and no voltage is supplied to the ignition coil, or fuel injector(s).
NOTE: The PCM controls the Auto Shutdown (ASD) and fuel pump relays simultaneously, through the same ground circuit.
RENDER: 1.0x
NO RELATED
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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.