Toyota Corolla (E120): Circuit description

This is the power source of the ecu, hence the actuators.

Wiring diagram

Wiring diagram

Inspection procedure

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    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 ...

    Automatic air conditioning system
    Air outlets are automatically selected and fan speed is automatically adjusted according to the set temperature setting. Also, the display and button positions will differ depending on the type of the system. Air conditioning controls Temperature control switch Fan speed control switch "A/C" s ...

    Inspection procedure
    1 Inspect transmission wire(sl) Disconnect the transmission wire connector from the transaxle.  measure the resistance according to the value(s) in the table below. Standard: 2 Check harness and connector(transmission wire – ecm) Connect the transmission wire c ...