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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    USB charging port (if equipped)
    The USB charging port are used to supply 3.0 A of electricity at 5 V to external devices. The USB charging port are for charging only. They are not designed for data transfer or other purposes. Depending on the external device, it may not charge properly. Refer to the manual included with the dev ...

    Changing the passkey
    1 Select “Passkey” using . 2 Input a 4 to 8-digit passkey using . Input the number 1 digit at a time. 3 When the entire number to be registered as a passkey has been input, press again. If the passkey to be registered has 8 digits, pressing again is not necessary. ...

    Check short circuit
    If the wire harness is ground shorted as shown in fig. 5, Locate the section by conducting a resistance check with the body ground in step (b). Check the resistance with the body ground.  Disconnect connectors a and c and measure the resistance between terminals 1 and 2 ...