Toyota ZZT230 series Repair Manual page 723

0�12
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. If the idle switch is malfunctioning, problem symptoms also occur in the en­
gine, so also inspect the engine.
WIRING DIAGRAM
E2
Engi ne Control Module
c
L-W IE3 L-W 13 ID L
IDLO
C 18
Crui s e Control ECU