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Toyota Corolla Repair Manual: 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 failsafe 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

Inspection procedure

Stop light switch circuit
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Inspection procedure
1 Check operation(stop lamp swtich assy) Check that the stop light comes on when the brake pedal is depressed, and turns off when the brake pedal is released. 2 Input signal check ...

Other materials:

Amplifier antenna assy
Replacement Hint: components: Remove roof headlining assy Notice: do not bend the roof headlining assy. Hint: refer to the procedure from remove roof headlining assy of roof headlining assy. Remove the related parts as long as the amplifier antenna assy can be removed. ...

Wiring
Power source Location ...

Malfunction in tachometer
Wiring diagram Inspection procedure Check output value of ecm.  Connect the handheld tester to dlc3. Turn the ignition switch to on and push the handheld tester main switch on.  Select the data list mode on the handheld tester. 2 Inspect combination mete ...

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