Toyota Corolla (E120) 2002–2008 Repair Manual / Introduction / Repair instruction / Precaution / For vehicles equipped with mobile communication system
Toyota Corolla (E120): For vehicles equipped with mobile communication system

- Install an antenna as far as possible away from the ecu and sensors of the vehicle’s electronic systems.
- install an antenna feeder at least 20 cm (7.87 In.) Away
from the ecu and sensors of the vehicle’s electronic systems.
For details of the ecu and sensors locations, refer to the section on the applicable component.
- prevent the antenna feeder from getting entangled with the other wirings, and keep the antenna feeder separately from the other wirings as much as possible.
- check that the antenna and feeder are correctly adjusted.
- do not install any powerful mobile communication system.
Other materials:
Malfunction in speedometer
Wiring diagram
Inspection procedure
1 Check combination meter assy
Remove the combination meter assy with connector still
connected.
check voltage.
Jack up either of the front wheels.
Shift the shift lever to neutral.
Turn the ignition switch to on ...
Trip information
■ Switching the display
Items displayed can be switched by pressing the “DISP” switch.
■ Odometer
Displays the total distance the vehicle has been driven.
Except vehicles with a manual transmission: Press and hold the “DISP” switch
to change the display to the Eco Driving ...
Inspection procedure
1 Check low pitched horn assy
Connect the positive (+) lead from the battery to the terminal
and negative (–) lead to the horn body, and check that
the horn blows.
2 Check relay (marking: horn)
Remove the relay from the engine room j/b.
check the horn relay conti ...


