Highlander LTD 2WD V6-3.0L (1MZ-FE) (2002)
Idle Speed/Throttle Actuator - Electronic: Testing and Inspection
Component Testing
THROTTLE BODY IDLE SPEED CONTROL VALVE ASSY
NOTE:
-
It is impossible to check the resister value and the operation of ISCV by itself, because the ISCV has an IC circuit inside it, which transforms
the duty signal from the ECU to the derive signal.
-
After checking, erase the DTC.
-
Clear the DTC after inspection.
HINT: When the ISCV system has malfunctions except for its adherence, DTC is detected.
a. Remove the ISC.
b. Operation inspection.
1. Connect the ISC connector to the ISC valve.
2. Check the ISC valve movement when the ignition switch is turned ON.
Movement:
Half open -> fully close -> fully open -> half open
HINT: ISC valve moves within 0.5 second.