Toyota Corolla Quiz
Engine control system

On–vehicle inspection

In this manual: Engine control system
Introduction — 31Preparation — 32Service specifications — 19Diagnostics — 497Engine control system — 6Fuel — 13Emission control — 28Exhaust — 3Cooling — 13Lubrication — 7Ignition — 3Starting & charging — 13Front suspension — 12Rear suspension — 9Tire & wheel — 1Drive shaft / propeller shaft — 15Brake — 42Automatic transmission / trans — 47Clutch — 19Steering column — 9Power steering — 11Heater & air conditioner — 20Supplemental restraint system — 27Seat belt — 12Lighting — 18Wiper & washer — 9Audio & visual — 12Wiring — 1Communication system — 1Windshield/windowglass/mirror — 31Seat — 10Theft deterrent & door lock — 10Sliding roof/convertible — 8Engine hood/door — 12Exterior/interior trim — 20Vehicle control system — 1Cruise control — 5Maintenance — 8
3steps
~18min
2/5difficulty
Done 0 of 3
1. Inspection throttle body idle speed control valve assy
Toyota Corolla. Inspection throttle body idle speed control valve assy
Notice

:
  • it is impossible to check the resister value and the operation of isc valve by itself, because the isc valve has an ic circuit inside it, which transforms the duty signal from the ecm to the derive signal.
  • After checking, erase the dtc.
  • Clear the dtc after inspection.
Hint

: when the isc valve system has malfunctions except for its adherence, dtc p0505 is detected.
  1. Operation inspection.
  2. Connect the isc connector to the isc valve.
  3. 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.

Test yourself

A quick Toyota Corolla quiz: every answer comes with an explanation and a link to the manual page.