Toyota Corolla (E120): Inspection procedure

Hint

: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air–fuel ratio was lean or rich, etc. At the time of the malfunction.

1 Check cooling system

  1. Check that there is a defect in the cooling system which causes overcool, such as abnormal radiator fan operation, modified cooling system and so on.

2 Inspect thermostat

2 Inspect thermostat

3 Check other dtc output(in addition to dtc p0128)

3 Check other dtc output(in addition to dtc p0128)

  1. Connect the hand–held tester or the obd ii scan tool to the dlc3.
  2.  turn the ignition switch on and push the hand–held tester or the obd ii scan tool main switch on.
  3.  select the item ”diagnosis / enhanced obd ii / dtc info / current codes”.
  4.  read the dtcs.

Result:

Hint:

Hint

: if any other codes besides p0128 is output, perform the troubleshooting for those dtcs first.

Replace ecm

Replace ecm

    Share this page:

    Other materials:

    Inside vehicle
    General maintenance Performing these maintenance checks on the vehicle in the owner’s responsibility. The owner may perform the maintenance or take the vehicle to a service center. Check the parts of the vehicle described below on a daily basis. In most cases, special tool are not requir ...

    Tire size
    ■ Typical tire size information The illustration indicates typical tire size. 1 Tire use (P = Passenger car, T = Temporary use) 2 Section width (millimeters) 3 Aspect ratio (tire height to section width) 4 Tire construction code (R = Radial, D = Diagonal) 5 Wheel diameter (inches) 6 Loa ...

    Front passenger occupant classification system
    Your vehicle is equipped with a front passenger occupant classification system. This system detects the conditions of the front passenger seat and activates or deactivates the devices for the front passenger. 1 SRS warning light 2 Seat belt reminder light 3 “AIR BAG OFF” indicator light ...