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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    Lubrication system
    On–vehicle inspection 1. Check engine oil level  after warming up the engine and then 5 minutes after the engine stops, oil level should be between the ”l” and ”f” marks on the oil level gage. If low, check for leakage and add oil up to the ”f” mark. Notice: do not ...

    Setting the vehicle speed
    1 Press the “ON-OFF” button to activate the cruise control. Cruise control indicator will come on. Press the button again to deactivate the cruise control. 2 Press the “ON-OFF” button to activate the cruise control. Cruise control indicator will come on. Press the button again to deac ...

    On–vehicle inspection
    1. Check battery electrolyte level Check the electrolyte quantity of each cell (maintenance–free battery).  If under the lower level, replace the battery (or add distilled water if possible) and check the charging system.  check the electrolyte quantity of each cell ...