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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    Inspection procedure
    1 Inspect park/neutral position switch assy Disconnect the park/neutral position switch connector.  measure resistance according to the value(s) in the table below when the shift lever is moved to each position. Standard: 2 Check harness and connector(park/neutral position ...

    Evap monitor (vacuum pressure monitor)
    Notice: a cold soak must be performed prior to conducting the drive pattern to complete the internal pressure readiness monitor. Cold soak preconditions The monitor will not run unless: mil is off. Fuel level is approximately 1/2 to 3/4. Altitude is 7800 feet (2400 m) or less. ...

    Checking and replacing fuses
    If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary. Checking and replacing fuses 1. Turn the engine switch off. 2. Open the fuse box cover. Engine compartment: type A fuse box Push the tabs in and lift the lid off. E ...