Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Mil circuit / Circuit description
Toyota Corolla (E120): Circuit description
The ignition switch provides circuit power and the ecm provides the circuit ground that illuminates the mil.
Mil operation is checked visually: it should be illuminated when the ignition is first turned on. If the mil is off all of the time or on all of the time, use the procedure below to troubleshoot it. The mil is used to indicate the ecm’s detection of a vehicle malfunction.
Follow this procedure using the hand–held tester or an obd ii scan tool to determine the cause of the problem and to check the mil.
Wiring diagram

Other materials:
Calibrating the compass
The direction display deviates from
the true direction determined by the earth’s magnetic field. The amount of deviation
varies according to the geographic position of the vehicle.
If you cross over a map boundary shown in illustration, the compass will deviate.
To obtain higher precision or ...
Connecting a Bluetooth® audio player
► Registering an additional device
Select “Select Device” on the Bluetooth® audio control screen.
►Selecting a registered device
Select “Select Device” on the Bluetooth® audio control screen.
■Reconnecting a Bluetooth® phone
If the system cannot connect due to poor ...
Selecting tire chains
Use the correct tire chain size when mounting the tire chains.
Chain size is regulated for each
tire size.
Side chain (0.12 in. [3 mm] in
diameter)
Side chain (0.39 in. [10 mm]
in width)
Side chain (1.18 in. [30 mm]
in length)
Cross chain (0.16 in. [4 mm]
in diameter)
Cross chain (0.55 i ...


