Toyota Corolla (E120): Ignition switch circuit

Ecu power source circuit

Circuit description

Other materials:

Terminals of ecu
1. Inspect integration relay Disconnect the connector from the integration relay. check the continuity between each terminal of the disconnected connector and the body ground, as shown in the illustration and table. Standard: If the result is not as specified, the vehicle’s ...

Initialization
Select “Initialize” using . ● Initializing the sound settings Select “Sound setting” using and press (YES). For details about sound settings: ● Initializing the device information Select “Car Device Info” using and press (YES). Automatic connection of a portable ...

Check and replace ecu
Notice: start an inspection of the connector from the backside of the connector on the wire harness side with the connector connected to the ecu. When no measurement condition is specified, perform the inspection with the engine stopped and also the ignition switch on. First check the ec ...