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:
Toyota Safety Sense 3.0 software
update
It is necessary to enter a
connected services contract,
provided by Toyota, to
use these functions. For
details, contact your Toyota
dealer.
WARNING
■For safe use
When the Toyota Safety Sense
3.0 software is updated, the operating
methods of functions may
change. Using this system without
knowing ...
Replacement
1. Remove engine under cover rh
2. Drain coolant
3. Remove fan and generator v belt
4. Remove generator assy
Disconnect the wire clamp from the wire clip on the rectifire
end frame.
remove the rubber cap and nut, and disconnect the alternator
wire.
disconnect the ...
Deactivating or stopping the alarm
Do one of the following to deactivate or stop the alarm:
● Unlock the doors or open the trunk.
● Vehicles without a smart key system:
Turn the engine switch to the “ACC” or “ON” position, or start the engine. (The
alarm will be deactivated or stopped after a few seconds.)
& ...