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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    Inspection procedure
    1 Inspect terminal voltage(od – body ground) Disconnect the cruise control ecu connector.  turn the ignition switch to the on position.  measure the voltage between terminal od of cruise control ecu and body ground. Standard: 2 Inspect terminal voltage(od1 – bod ...

    Ecu power source circuit
    Circuit description This circuit provides power to operate the tvip ecu. Wiring diagram Inspection procedure 1 Check fuse (ecu–b) Remove the fuse from the instrument panel j/b.  check the continuity of the fuse. Standard: continuity 2 Check tvip ecu Disconnect ...

    Inspection procedure
    1 Check un–lock warning switch assy Disconnect the key unlock warning switch connector.  check the continuity between the terminals of the key unlock warning switch connector, as shown in the illustration and table. Standard: 2 Check wire harness (tvip ecu unlock warni ...