Toyota Celica 2005 Repair Manual page 461

DI−262
7 Check voltage between terminals VISC and GND of IAC valve connector.
Wire Harness Side:
IAC valve Connector
1 2
VISC (+)
Front View
OK
8 Check for open and short in harness and connector between IAC valve and ECM
(See page IN−30).
OK
9 Check IAC valve (See page SF−48).
Ok
Replace ECM (See page SF−78).
2005 CELICA (RM1131U)
DIAGNOSTICS
PREPARATION:
(a)
(b)
CHECK:
Measure the voltage between the terminals VISC and IAC of
3
IAC valve connector.
OK:
GND (−)
A21425
− ENGINE (1ZZ−FE)
Disconnect the IAC valve connector.
Turn the ignition switch ON.
Voltage: 9 to 14 V
NG Repair or replace harness or connector.
NG Repair or replace harness or connector.
NG Replace IAC valve.
460