Toyota Corolla (E120): Circuit description

While driving uphill with cruise control activated, in order to minimize gear shifting and provide smooth cruising overdrive may be prohibited temporarily under some conditions.

The cruise control ecu sends o/d cut signals to the ecm as necessary and the ecm cancels overdrive shifting until these signals are discontinued.

Wiring diagram

Inspection procedure

    Share this page:

    Other materials:

    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 ...

    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 ...

    Seat heaters
    Press the switch. 1 High temperature 2 Low temperature The indicator light comes on when the switch is on. ■The seat heaters can be used when ► Vehicles without a smart key system The engine switch is in the “ON” position. ►Vehicles with a smart key system The engine ...