On-Vehicle Inspection; Inspect Resistance Of Isc Valve; Idle Speed Control (Isc) Valve (4A-Gze - Toyota MR2 1988 Repair Manual

Fl-106
ISC Valve
EFI SYSTEM - Air Induction System
Fl2993
Idle Speed Control (ISC) Valve
(4A-GZE)
A-A
rJ
OUT
~
IN
ON-VEHICLE INSPECTION
INSPECT RESISTANCE OF ISC VALVE
Bimetal
(a) Disconnect the ISC valve connector.
R2991 AS0108
(b) Using on ohmmeter, measure the resistance between
each terminal.
Resistance: ISC
1 -
+B
ISC
2 -
+B
REMOVAL OF ISC VALVE
16-17
n
16- 11
n
1. DRAIN COOLANT FROM THROTTLE BODY
2. DISCONNECT ISV VALVE CONNECTOR
3. DISCONNECT TWO WATER BY-PASS HOSES
4. REMOVE ISC VALVE
(See page Fl-102)