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 MANUALSACURA1994INTEGRA (GS-R) L4-1797CC 1.8L DOHC (VTEC)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSVARIABLE VALVE TIMING PRESSURE SWITCHDESCRIPTION AND OPERATION
1994 Acura Integra (GS-R) L4-1797cc 1.8L DOHC (VTEC)
Variable Valve Timing Pressure Switch: Description and Operation
1994 Acura Integra (GS-R) L4-1797cc 1.8L DOHC (VTEC)SECTION Description and Operation
PURPOSE
The Variable Valve Timing Pressure Switch signals the Engine Control Module (ECM) when the Variable Valve Timing and Valve Lift Electronic Control (VTEC) system has applied oil pressure to the rocker arm assembly, engaging the secondary cam rocker arms.
OPERATION
The switch normally provides continuity to ground for its blue/black striped wire when the VTEC system is not activated. When the proper operating conditions have been met, the switch removes ground from its circuit, signalling the ECM that the solenoid has allowed high pressure oil into the rocker arm assembly.
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.