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:
Wireless remote control/electronic key battery
Replace the battery with a new one if it is depleted.
You will need the following items:
● Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR2016 (vehicles without a smart key system), or CR2032 (vehicles
with a smart key system)
Replacing the battery
...
Replacement
Hint:
for parking brake cable assy no.2, Perform the same procedure to the parking
brake cable assy no.3.
1. Remove rear wheel
2. Remove rear brake drum sub–assy
3. Remove rear brake automatic adjust lever lh
4. Remove front brake shoe
sst 09718–00010
5. Remove parking brake sho ...
Selecting a folder
■ Selecting a folder
Press (
) or (
) to select the desired folder.
■ Selecting a folder and file from a folder list
1 Press .
A folder list will be displayed.
2 Turn and press to select a folder
and a file.
To return to the previous display, press
(BACK).
■ Return ...


