Toyota Tacoma manuals

Toyota Corolla Repair Manual: 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 airfuel 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 handheld tester or the obd ii scan tool to the dlc3.
  2.  turn the ignition switch on and push the handheld 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

Circuit description
If the engine coolant temperature (ect) does not reach 75c (167f) despite sufficient warm up time has elapsed. Dtc no Dtc detection condition Trouble area P01 ...

Oxygen sensor
Dtc p0130 oxygen sensor circuit malfunction (bank 1 sensor 1) Dtc p2195 oxygen sensor signal stuck lean (bank 1 sensor 1) Dtc p2196 oxygen sensor signal stuck rich (bank 1 sensor 1) ...

Other materials:

Key confinement prevention function does not work properly (unlock warning switch circuit)
Circuit description The unlock warning switch turns on when the key is inserted in the ignition key cylinder and the door courtesy switch turns on when the drivers door is opened, and the integration relay monitors both switches conditions. According to these switches conditions, the integ ...

Circuit description
The airbag front rh sensor circuit consists of the airbag sensor assy center and airbag front rh sensor. Dtc b1156/b1157/15 is recorded when a malfunction is detected in the airbag front rh sensor circuit. Wiring diagram ...

Circuit description
Refer to dtc p0120 Dtc no. Dtc detection condition Trouble area P0121 The following condition is met 4 times. After the vehicle speed has exceeded 19 mph (30 km/h) once, the throttle position sensor output value is out of normal range when the throttle ...

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