Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Cruise control system / Stop light switch circuit / Circuit description
Toyota Corolla (E120): Circuit description
When the brake pedal is depressed, the stop lamp switch assy sends a signal to the cruise control ecu assy.
When the cruise control ecu assy receives this signal, it cancels the cruise control.
A fail–safe function is provided so that cancel functions normally, even if there is a malfunction in the stop light switch circuit.
The cancel conditions are: battery positive voltage at terminal stp–.
When the brake pedal is depressed, normal battery positive voltage normally is applied through the stop fuse and stop lamp switch assy to terminal stp– of the cruise control ecu assy, and the cruise control ecu assy turns the cruise control to off.
If the harness connected to terminal stp– has an open circuit, terminal stp– will have battery positive voltage and the cruise control will be turned off.
Also, when the brake pedal is depressed, the magnetic clutch circuit is cut mechanically by the stop lamp switch assy, turning the cruise control off.
Wiring diagram
Other materials:
Parking brake
Operating instructions
1 To set the parking brake, fully pull the parking brake lever while depressing
the brake pedal.
2 To release the parking brake, slightly raise the lever and lower it completely
while pressing the button.
*1: For U.S.A.
*2: For Canada
■Parking brake engaged wa ...
Inspection procedure
1 Check airbag sensor assy center connector
Disconnect negative (–) terminal cable from the battery, and wait at
least for 90 seconds.
check the connection of the airbag sensor assy center connectors.
2 Check air bag sensor assy center
Sst 09843–18040
Connect the n ...
Making a phone call
To enter the “PHONE” mode, press the off-hook switch.
■ Making a phone call
● Dialing by selecting a name
● Speed dialing
● Dialing by entering the number
● Dialing from call histories
■ Receiving a phone call
● Answering the phone
● Refusi ...