IMRC (Intake Manifold Runner Control) Valve Inspection

IMRC (Intake Manifold Runner Control) Valve Inspection

IMRC (Intake Manifold Runner Control) Valve Removal and Installation

IMRC Valve Motor Check

NOTE:

The IMRC valve actuator may be damaged if battery voltage is applied to it for longer than 10 seconds.

Limit the time of battery voltage application to the IMRC valve actuator to no more than 10 seconds.

1) Remove IMRC valve. Intake Manifold Removal and Installation
2) Using ohmmeter, measure resistance between terminals "4" and "5" of IMRC valve actuator connector.

If faulty condition is found, replace IMRC valve (2).

IMRC valve motor resistance
8 - 10 ohms at 20 °C (68 °F)

3) Connect battery (1) to terminals "4" and "5" of IMRC valve actuator connector as shown in figure.

Check if IMRC valve is at fully open position.





4) Connect battery (1) to terminals "4" and "5" of IMRC valve actuator connector as shown in figure.

Check if IMRC valve is at fully closed position.

If faulty condition is found, replace IMRC valve (2).






IMRC Valve Position Sensor Output Voltage Check

1) Remove IMRC valve. Intake Manifold Removal and Installation
2) Check IMRC valve position sensor output voltage as follows.

If faulty condition is found, replace IMRC valve.
a) Set IMRC valve to fully open position.
b) Connect 3 new 1.5 V batteries (1) in series and check that total voltage is 4.5 - 5.0 V.
c) Connect voltmeter (2) and batteries (1) to IMRC valve position sensor as shown in figure.
Measure IMRC valve position sensor output voltage.
If faulty condition is found, replace IMRC valve.

IMRC valve position sensor output voltage
Fully open: 3.253 - 3.947 V

d) Set IMRC valve to fully closed position.
e) Connect voltmeter (2) and batteries (1) to IMRC valve position sensor as shown in figure.
Measure IMRC valve position sensor output voltage.
If faulty condition is found, replace IMRC valve.

IMRC valve position sensor output voltage
Fully closed: 0.534 - 0.762 V