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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    Vehicle information
    This screen can be used to display the fuel consumption. “Trip Information” or “Past Record” screen Press “CAR” to display the “Trip Information” or “Past Record” screen. Fuel consumption ■ Trip information If the “Trip Information” screen does not appear, select ...

    Inspection procedure
    1 Check d squib circuit(airbag sensor assy center – horn button assy) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the horn button assy and the airbag sensor assy center.  for the blac ...

    Malfunction in tachometer
    Wiring diagram Inspection procedure Check output value of ecm.  Connect the hand–held tester to dlc3. Turn the ignition switch to on and push the hand–held tester main switch on.  Select the data list mode on the hand–held tester. 2 Inspect combinatio ...