Off-Vehicle

1. INSPECT VALVE RESISTANCE.

NOTICE: Cold and Hot in these sentences express the temperature of the coils themselves.
Cold is from 10 C (14°F) to 50°C (122°F) and
Hot is from 50°C (122°F) to 100 °C (212°F).

- Using an ohmmeter, measure the resistance between the terminals (B1 - S1 and S3. B2 - S2 and 54).

Resistance:
Cold: 31 - 61 0hms
Hot: 38 - 71 0hms

- If resistance is not as specified. replace the AC valve.





2. INSPECT IAC VALVE OPERATION.
- Apply battery voltage to terminal B1 and B2, and while repeatedly grounding S1 - S2 - S3 - S4 - S1 in sequence, check that the valve moves toward the closed position.





- Apply battery voltage to terminal B1 and B2, and while repeatedly grounding S4 - S3 - S2 - S1 - S4 in sequence, check that the valve moves toward the open position.
- If operation is not as specified, replace the IAC valve.