Toyota Corolla (E120): Circuit description

This signal is used to detect that the brakes have been applied. The stp signal voltage is the same as the one supplied to the stop lights.

The stp signal is used mainly to control the fuel cut–off engine speed (the fuel cut–off engine speed is reduced slightly when the vehicle is braking.).

Wiring diagram

Inspection procedure

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    Replacement
    Hint: components: 1. Remove rear wheel 2. Remove rear brake drum sub–assy 3. Disconnect skid control sensor wire (w/ abs) 4. Remove rear axle hub & bearing assy lh Remove the 4 bolts and hub & bearing assy lh. 5. Install rear axle hub & bearing assy lh Install t ...

    Front suspension arm sub–assy lower no.1 Lh
    Replacement Hint: components: 1. Remove front wheel 2. Disconnect front stabilizer link assy lh (lh (a/t) position) 3. Disconnect front stabilizer link assy rh (lh (a/t) position) Hint: remove the rh side by the same procedures as the lh side. 4. Separate front suspension arm sub–assy lowe ...

    Precaution
    1. Notices when checking  power door lock/unlock function: the wireless remote control function operates only when the following 3 conditions are met.  No key is inserted into the ignition key cylinder.  All the doors are closed. However, doors can be unlocked even wh ...