What does VTEC pressure switch do?

What does VTEC pressure switch do?

VTEC stands for Variable Valve Timing with Electronic Control. The variable valve timing oil pressure switch is a normally open switch located at the VVT solenoid. When the VTEC oil pressure switch closes, the voltage should drop to zero. This is how the PCM knows if oil pressure was applied to the VTEC system.

Where is the oil pressure switch located on a 99 Honda Accord?

It is located at the rear of the engine just above the oil filter single wire going to it switch I think is about 22mm in diameter.

How do you test a VTEC oil pressure switch?

To test for the 10 volts, set your meter on the DC 20 setting. The connector must be plugged into the sensor/switch to get the desired reading. “Jam” the leads into the backside of the connector and turn the ignition on to get the reading. To test for continuity, yes, you have the meter set correctly.

Where is oil pressure switch?

The oil pressure sensor will usually be located near the back and top of the engine compartment, and bolted in to the engine block, connected by an electrical clip to the car’s computer/electrical system.

What does an oil pressure sending unit do?

The oil pressure sending unit regulates the flow of oil. It sends the oil pressure information to the car’s computer, which then controls the related lights and gauges. For example, if lower than normal oil pressure is detected, the pressure sensor will make the gauge in the car reflect an Oil Pressure Warning Light.

How do I bypass the VTEC oil pressure switch?

This can be easily bypassed with a simple wiring trick: On your engine harness, locate the VTEC oil pressure switch plug/wire (this wire comes from OBD1 ECU pin D6). Use a common T-tap or other method and simply tap this into the VTEC solenoid valve wire (the VTEC solenoid wire comes from OBD1 ECU pin A4).

Can you drive with a bad oil pressure switch?

No. It is not safe driving with a bad oil pressure sensor. It will often cause your check engine light to illuminate, even though there isn’t necessarily anything wrong with your car. Or worse, it won’t trigger any warning when in fact your engine runs low on oil, damaging its internal parts.