Toyota RAV4 manuals

Toyota RAV4 Service Manual: Engine coolant temperature circuit range / performance problem

Toyota RAV4 Service Manual / 2Az-fe engine mechanical / Sfi system / Diagnostic trouble code chart / Engine coolant temperature circuit range / performance problem

Toyota RAV4. Engine coolant temperature circuit range / performance problem


Description

Refer to dtc p0115 (see page es-105).

Toyota RAV4. Engine coolant temperature circuit range / performance problem


Monitor description

Engine coolant temperature (ect) sensor cold start monitor

When a cold engine start is performed and then the engine is warmed up, if the ect sensor value does not change, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the mil is illuminated and a dtc is set.

Ect sensor soak monitor

After a warmed up engine is started, if the ect sensor value does not change when the engine is stopped and then the next cold engine start is performed, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the mil is illuminated and a dtc is set.

Monitor strategy

Toyota RAV4. Monitor strategy


Typical enabling conditions

Toyota RAV4. Typical enabling conditions


Toyota RAV4. Typical enabling conditions


typical malfunction thresholds

Toyota RAV4. typical malfunction thresholds


Component operating range

Toyota RAV4. Component operating range


Inspection procedure

Hint:

  1. Check any other dtcs output (in addition to dtc p0116)

  1. Connect the intelligent tester to the dlc3.
  2. Turn the ignition switch on.
  3. Turn the tester on.
  4. Select the following menu items: diagnosis / enhanced ii / dtc info / current codes.
  5. Read the dtc.

Toyota RAV4. Check any other dtcs output (in addition to dtc p0116)


  1. Inspect thermostat

  1. Remove the thermostat (see page co-15).
  2. Measure the valve opening temperature of the thermostat.

Standard value: 80°c to 84°c (176°f to 183°f)

Hint:

In addition to the above check, confirm that the valve is completely closed when the temperature is below the standard.

  1. Reinstall the thermostat (see page co-15).

 


Engine coolant temperature circuit
Description A thermistor, whose resistance value varies according to the ect, is built into the engine coolant temperature (ect) sensor. The structure of the sensor and its connection to th ...

Throttle / pedal position sensor / switch "A"
Hint: These dtcs relate to the throttle position (tp) sensor. Description The tp sensor is mounted on the throttle body, and detects the opening angle of the throttle valve. This sensor is a ...

Other materials:

Power mirror control system
Parts location System diagram System description The outer mirror switch controls the outer rear view mirror lh and rh. Problem symptoms table Hint: Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of pr ...

Battery current sensor
On-vehicle inspection Check battery current sensor assembly Measure the resistance of the sensor. Standard resistance If the result is not as specified, replace the sensor assembly. Measure the resistance of the sensor. Standard resistance If the result is not as specified, ...

Maintenance requirements
To ensure safe and economical driving, day-to-day care and regular maintenance are essential. It is the owner’s responsibility to perform regular checks. Toyota recommends the following maintenance: General maintenance General maintenance should be performed on a daily basis. This can be done ...

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