Toyota Corolla (E120): Circuit description

The vehicle speed sensor circuit is sent to cruise control ecu assy as a vehicle speed signal. For each rotation of the shaft, the vehicle speed sensor sends a signal through the combination meter assembly to the cruise control ecu assy (see the following chart). The cruise control ecu assy calculates the vehicle speed from this pulse frequency.

Wiring diagram

Wiring diagram

Inspection procedure

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    Starting system
    Inspection 1. Inspect starter assy Notice: these tests must be performed within 3 to 5 seconds to prevent burnout of the coil.  perform the pull–in test.  Remove the nut, then disconnect the lead wire from terminal c. Connect the battery to the starter repai ...

    Repair
    1. Steering off center repair procedure Inspect steering wheel off center.  Apply masking tape on the top center of the steering wheel and steering column upper cover.  Driving the vehicle on a straight line for 100 meters at a constant speed of 35 mph (56 km/h), and ho ...

    Inspection procedure
    1 Check side squib(rh) circuit(airbag sensor assy center – front seat airbag assy rh) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the front seat airbag assy ...