Variable Induction Control Valve: Testing and Inspection
IMRC (Intake Manifold Runner Control) Valve InspectionIMRC Valve Motor Check
CAUTION: Do not connect battery to IMRC valve actuator more than 10 seconds continuously.
1. Remove IMRC valve.
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.
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
