Toyota Celica 2005 Repair Manual page 1267

DI−1066
Idle Signal Circuit
CIRCUIT DESCRIPTION
When the idle switch is turned ON, a signal is sent to the ECU. The ECU uses this signal to correct the dis-
crepancy between the throttle valve position and the actuator position sensor value to enable accurate
cruise control at the set speed. Since there will also be a problem when the idle switch malfunctions, inspect
both the switch and the engine if the idle switch is faulty.
WIRING DIAGRAM
E2
Engine Control Module
2005 CELICA (RM1131U)
DIAGNOSTICS −
10 L−W
IDLO
1266
CRUISE CONTROL SYSTEM (1ZZ−FE)
C18
Cruise Control ECU
18
13
L−W
IE3
IDL
DI3VK−14
I13755