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 MANUALSPLYMOUTH1990ACCLAIM V6-181 3.0L SOHCREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSTRANSMISSION CONTROL SYSTEM26 L-R/2-4 PRESSURE SWITCH CIRCUIT
1990 Plymouth Acclaim V6-181 3.0L SOHC
26 L-R/2-4 Pressure Switch Circuit
1990 Plymouth Acclaim V6-181 3.0L SOHCSECTION 26 L-R/2-4 Pressure Switch Circuit
THEORY OF OPERATION:
The transmission system uses three pressure switches to monitor the fluid pressure in the L-R, 2-4, and OD elements. The pressure switches are continuously monitored for the correct states in each gear as shown below.
LIMP-IN:
YES (89-95 model years)
WHEN MONITORED/SET CONDITIONS:
Whenever the engine is running.
TRANSMISSION EFFECTS:
- 89-95 model year + 96 model year V-1 calibration - relay open in limp-in mode.
- 96 model year V-2 calibration (default desensitization) and 97 model year - Code eliminated, codes 22 and 24 will be set.
POSSIBLE CAUSES:
- If code 35 is present, ignore code 22 and perform code 35 diagnostic procedures.
- If code 35 is not set, follow diagnostic procedures for codes 22 and 24.
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.