Toyota Corolla (E120): Circuit description

The actuator motor is operated by signals from the cruise control ecu assy. Acceleration and deceleration signals are transmitted by changes in the duty ratio (see below).

Duty ratio: the duty ratio is the ratio of the period of continuity in one cycle. For example, if a is the period of continuity in one cycle, and b is the period of non–continuity, then

Wiring diagram

Wiring diagram

Inspection procedure

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    Safety Connect
    *: If equipped Safety Connect is a subscription- based telematics service that uses Global Positioning System (GPS) data and embedded cellular technology to provide safety and security features to subscribers. Safety Connect is supported by Toyota's designated response center, which operates 24 hour ...

    Check open circuit
    For the open circuit in the wire harness in fig. 1, Perform a resistance check in step (b) or a voltage check in step (c) to locate the section. Check the resistance.  Disconnect connectors a and c and measure the resistance between them. Resistance: 1 Ω or les ...

    Inspection procedure
    Hint: hand–held tester only: narrowing down the trouble area is possible by performing ”a/f control” active test (heated oxygen sensor or other trouble areas can be distinguished). Perform active test using hand–held tester (a/f control). Hint: ”a/f control” is the active te ...