Toyota Corolla (E120): Inspection procedure

1 Check operation(stop lamp swtich assy)

  1. 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

2 Input signal check

  1. See input signal check on page 05–745.
  2.  check the indicator light when the brake pedal is depressed.

    Ok: the indicator light goes off when the brake pedal is depressed.

3 Inspect terminal voltage(stp–)

3 Inspect terminal voltage(stp–)

  1. Remove the cruise control ecu assy with connectors still connected.
  2.  turn the ignition switch to on.
  3.  measure voltage between terminal 3 (stp–) of cruise control ecu assy connector and body ground, when the brake pedal is depressed and released.

    Ok:

4 Check harness and connector(between cruise control ecu assy

4 Check harness and connector(between cruise control ecu assy and stop lamp switch assy)

  1. Check for open and short circuit in harness and connector between cruise control ecu assy and stop lamp switch assy

Check and replace cruise control ecu assy

Check and replace cruise control ecu assy

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    Circuit description
    The purpose of this circuit is to prevent the engine from stalling while driving in lock–up condition, when brakes are suddenly applied. When the brake pedal is depressed, this switch sends a signals to the ecm. Then the ecm cancels the operation of the lock–up clutch while braking is i ...

    Engine mechanical
    Service data Torque specification ...

    Overhaul
    1. Drain clutch fluid 2. Disconnect clutch release cylinder to flexible hose tube Using sst, disconnect the flexible hose tube. Sst 09023–00100 Hint: use a container to catch the fluid. 3. Remove clutch release cylinder assy Remove the 3 bolts, clutch release cylinder assy ...