Toyota Corolla (E120): Circuit description

Hint:

Hint

: there is a case that hand–held tester cannot be used when ecu is abnormal.

Wiring diagram

Inspection procedure

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    Speed control main switch assy
    Replacement 1. Disconnect battery negative terminal 2. Inspect place front wheels facing straight ahead 3. Remove horn button assy 4. Remove steering wheel assy sst 09950–50013 (09951–05010, 09952–05010, 09953–05020, 09954–05021) 5. Remove speed control main switch assy Remov ...

    Driving mode select switch
    The driving modes can be selected to suit driving condition. Selecting a drive mode Operate the driving mode select switch forward or backward to select the desired driving mode on the multi-information display. Normal mode Provides an optimal balance of fuel economy, quietness, and dynamic perf ...

    Inspection procedure
    Hint: if different dtcs related to different systems that have terminal e2 as the ground terminal are output simultaneously, terminal e2 may be open. If dtc p0441 (purge flow), p0446 (vsv for ccv), p0451, p0452 or p0453 (evaporative pressure sensor) is output with dtc p0442 or p0456, ...