Idle Speed Control ISC Valve AGZE

Isc Idle Speed Control Toyota

ON-VEHICLE INSPECTION

INSPECT RESISTANCE OF ISC VALVE

(a) Disconnect the ISC valve connector.

(b) Using on ohmmeter, measure the resistance between each terminal.

Resistance: ISCj — +B 16 — 17ft ISC2 - +B 16 - 17 il

REMOVAL OF ISC VALVE

1. DRAIN COOLANT FROM THROTTLE BODY

2. DISCONNECT ISC VALVE CONNECTOR

3. DISCONNECT TWO WATER BY-PASS HOSES

4. REMOVE ISC VALVE (See page FI-102)

Isc For Mr2

fi2993

INSPECT OPERATION OF ISC VALVE

(a) Apply battery voltage, connect the positive terminal to +B terminal and the negative terminal to \SClr terminal. Check that the valve moves toward the closed position.

(b) Apply terminal voltage, connect the positive terminal to +B terminal and the negative terminal to ISC2 terminal. Check that the valve moves toward the open position.

INSTALLATION OF ISC VALVE

1. INSTALL ISC VALVE (See page FI-103)

2. CONNECT TWO WATER BY-PASS HOSES

3. CONNECT ISC VALVE CONNECTOR

4. REFILL WITH COOLANT

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