Toyota Tacoma manuals

Toyota Corolla Repair Manual: Circuit description

Refer to dtc p0130

Dtc no

Dtc detection condition

Trouble area

P0136 The following condition (a) or (b) continues for 300 seconds or more:
  1. During driving with the engine warmed up, heated oxygen sensor o tp t does not change output change.
  2. heated oxygen sensor output is very low most of the time.
  • Open or short in heated oxygen sensor (bank 1 sensor 2) circuit
  • Heated oxygen sensor (bank 1 sensor 2)
  • Heated o gen sensor heater (bank 1 sensor 2)
  • Efi relay

Hint

: sensor 2 refers to the sensor farthest away from the engine assembly.

Monitor description

The heated oxygen sensor generates waveform of a voltage between 0 v and 1 v in response to the oxygen concentration in the exhaust gases. When the output voltage of the heated oxygen sensor is 0.5 V or more, the ecm judges that the airfuel ratio is rich. When it is 0.40 V or less, the ecm judges that the airfuel ratio is lean.

If the rear heated oxygen sensor output dose not change between rich and lean during stop and go driving, the ecm interprets this as a malfunction in the rear heated oxygen sensor and sets a dtc. Also, if the sensor output remains at less than 0.05 V for more than 156 seconds when ecm monitored the heated oxygen sensor for 260 seconds while the air fuel feedback is being performed (the detecting condition differs depending on the type of vehicles), the ecm will interpret this as a fault. In either case, the ecm will turn on the mil and set a dtc.

Monitor strategy

Typical enabling conditions

Typical enabling conditions

Typical malfunction thresholds

Typical malfunction thresholds

Component operating range

Component operating range

Monitor result (mode 06 data)

Monitor result (mode 06 data)

Refer to page 0527 for detailed information on checking monitor status.

Refer to page 0527 for detailed information on checking monitor status.

Wiring diagram

Refer to dtc p0130

Confirmation driving pattern

  1. Connect the handheld tester to the dlc3.
  2.  switch the handheld tester from the normal mode to the check mode .
  3.  start the engine and let it idle for 60 seconds or more.
  4.  drive the vehicle at 25 mph (40 km/h) or more for 40 seconds or more.
  5.  let the engine idle for 10 seconds or more.
  6.  perform steps (d) and (e) 12 times.

Hint

: if a malfunction exists, the mil will be illuminated on the multi information display during step (f).

Notice

: if the conditions in this test are not strictly followed, a malfunction detection will not occur. If you do not have a handheld tester, turn the ignition switch off after performing steps from (c) to (f), then perform steps from (c) to (f) again.

Oxygen sensor circuit malfunction
Dtc p0136 oxygen sensor circuit malfunction (bank 1 sensor 2) ...

Inspection procedure
Hint: handheld tester only: narrowing down the trouble area is possible by performing a/f control active test (heated oxygen sensor or other trouble areas can be distinguished). Perform ac ...

Other materials:

Washer fluid
Add washer fluid in the following situations: ● A washer does not work. ● Vehicles without a multi-information display: The low windshield washer fluid warning light (if equipped) comes on. ● Vehicles with a multi-information display: The warning message (if equipped) appear ...

Inspection
1. Cooling fan relay Inspect the cooling fan relay continuity.  Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay.  Check that there is no continuity between terminals 3 and 5. If there is conti ...

Precaution
1. Work precautions (A) vehicle protection (1) when welding, cover glass, seats, carpets, etc. With heat resistant fireploof covers to protect them. (B) safety (1) never stand in the path of the chain when using a puller on the body or frame, and be sure to attach a safety cable. ...

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