Toyota Corolla (E120): Inspection procedure

1 Check operation(overdrive)

  1. Drive the vehicle after the engine warms up.
  2.  check that overdrive on e off occurs by an operation of the o/d switch on–off.

2 Inspect terminal voltage(od)

2 Inspect terminal voltage(od)

  1. Remove the cruise control ecu assy with the connector still connected.
  2.  turn the ignition switch to on.
  3.  disconnect the cruise control ecu assy connector.
  4.  measure voltage between terminal 14 (od) of harness side connector of cruise control ecu assy and body ground.

    Ok: voltage: 10 – 14 v

3 Inspect terminal voltage(ect)

3 Inspect terminal voltage(ect)

  1. Connect the cruise control ecu assy connector.
  2.  perform the test drive after engine warms up.
  3.  check voltage between terminal 6 (ect) of cruise control ecu assy connector and body ground when o/d switch is on and off.

    Ok:

4 Check harness and connector(between cruise control ecu assy

4 Check harness and connector(between cruise control ecu assy and electronically controlled transmission solenoid)

  1. Check for open and short circuit in harness and connector between cruise control ecu assy and electronically controlled transmission solenoid

Check and replace cruise control ecu assy

Check and replace cruise control ecu assy

5 Check harness and connector(between cruise control ecu assy and ecm)

  1. Check for open and short circuit in harness and connector between cruise control ecu assy and ecm

Check and replace cruise control ecu assy

Check and replace cruise control ecu assy

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    Circuit description
    When the idle switch is turned on, a signal is sent to the cruise control ecu assy. The cruise control ecu assy uses this signal to correct the discrepancy between the throttle valve position and the actuator position sensor values to enable accurate cruise control at the set speed. If the idl ...

    Shifting the shift lever
    Vehicles without a smart key system: While the engine switch is in the “ON” position, depress the brake pedal and move the shift lever. Vehicles with a smart key system: While the engine switch is in IGNITION ON mode, depress the brake pedal and move the shift lever. When shifting the ...

    Stopping the engine
    1 Stop the vehicle. 2 Continuously variable transmission: Shift the shift lever to P. Manual transmission: Shift the shift lever to N. 3 Set the parking brake. 4 Press the engine switch. 5 Vehicles without a multi-information display: Release the brake pedal (continuously variable transmission ...