Toyota Corolla (E120): Inspection procedure

Hint

:

  • if dtcs p0115, p0116, p0117, p0118 and p0125 are output simultaneously, the engine coolant temperature sensor circuit may be open or short. Perform the troubleshooting of dtc p0115, p0117 or p0118 first.
  • 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 other dtc output(in addition to dtc p0125)

  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 p0125 are output, perform the troubleshooting for those dtcs first.

2 Inspect thermostat

2 Inspect thermostat

Replace engine coolant temperature sensor

Replace engine coolant temperature sensor

    Share this page:

    Other materials:

    Radio broadcast cannot be received (bad reception)
    Inspection procedure 1 Check if radio auto–search functions properly Check if the radio auto–search functions properly.  Perform the auto–search of the radio and check that it functions normally. Standard: the radio auto–search functions properly. 2 Check optional ...

    Front wheel alignment
    Adjustment 1. Inspect tire 2. Measure vehicle height Vehicle height: Measuring points: a: ground clearance of front wheel center b: ground clearance of lower suspension arm front bolt center c: ground clearance of axle beam set bolt center d: ground clearance of rear wheel center Not ...

    Wiring diagram
    1 Inspect terminal voltage(pi) (a) turn Turn the ignition switch to on.  measure voltage between terminal 5 (pi) of cruise control ecu assy and body ground, when the cruise control main switch button is on and off. Ok: 2 Inspect combination meter assy 3 Check harn ...