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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    On–vehicle inspection
    1. Inspect cooling system for leaks Caution: to avoid the danger of being burned, do not remove the radiator cap while the engine and radiator are still hot, as fluid and steam can be blown out under pressure.  fill the radiator with coolant and attach a radiator cap tester.   ...

    Inspection
    1. Inspect front seat inner belt assy lh When fastening the seat belt (buckle switch on).  Inspect the continuity and resistance between the terminals. Standard: If the result is not as specified, replace the inner belt. When releasing the seat belt (buckle switch ...

    Replacement
    Hint: components: 1. Place front wheels facing straight ahead 2. Remove front wheels 3. Remove engine under cover lh 4. Remove engine under cover rh 5. Remove exhaust pipe 6. Drain transaxle oil 7. Remove hood sub–assy 8. Remove cylinder head cover no.2 9. Remove air cleaner assy 10. R ...