Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: Battery temperature sensor circuit

Toyota RAV4. Battery temperature sensor circuit


Description

Toyota RAV4. Description


The battery temperature sensor installed on the battery current sensor detects battery temperature.

A thermistor is integrated into the battery temperature sensor, and the resistance in the battery temperature sensor changes according to the battery temperature.

The resistance of the thermistor in the battery temperature sensor decreases as the battery temperature increases. The resistance increases as the temperature decreases.

The battery temperature sensor is connected to the ecm. The ecm supplies 5 v from the thb terminal to the battery temperature sensor through resistor r.

The battery temperature sensor and resistor r are connected in series. This results in fluctuations in the voltage supplied from the thb terminal when the resistance changes according to the battery temperature.

The ecm determines the battery temperature according to fluctuations in voltage. When the battery temperature is high, the ecm determines to reduce the amount of current supplied from the generator in order to protect the battery.

Toyota RAV4. Battery temperature sensor circuit


Wiring diagram

Refer to dtc p1550 (see page es-262)

Inspection procedure

  1. Inspect battery current sensor

  1. Disconnect the b29 battery current sensor connector.
  2. Measure the resistance.

Standard resistance




  1. Check harness and connector (battery current sensor - ecm)

  1. Disconnect the b29 battery current sensor connector.

  2. Disconnect the b30 ecm connectors.

  3. Measure the resistance of the wire harness side connectors.

Standard resistance (check for open)


Standard resistance (check for short)


 


Cold start
Description The electronic throttle control system (etcs) controls the engine idling speed. The etcs operates the throttle actuator to open and close the throttle valve, and adjusts the intake ...

System voltage
Description The battery supplies electricity to the ecm even when the ignition switch is in the off position. This power allows the ecm to store data such as dtc history, freeze frame data and ...

Other materials:

Changing the display
The multi-information display is operated using the meter control switches. Scroll the screen*/switch the display*/move the cursor Press: Enter/Set Press and hold: Reset/Display customizable items Return to the previous screen Call sending/receiving and history display (if equipped) Linke ...

Tc and cg terminal circuit
Description Dtc output mode is set by connecting terminals tc and cg of the dlc3. The dtcs are displayed by blinking the srs warning light. Hint: Make sure that dtc b1281 has not been output. If dtc b1281 has been output, refer to the multiplex communication system. When each warning ...

Throttle actuator control throttle body range / performance
Description The electronic throttle control system (etcs) is composed of the throttle actuator, throttle position (tp) sensor, accelerator pedal position (app) sensor, and ecm. The ecm operates the throttle actuator to regulate the throttle valve in response to driver inputs. The tp senso ...

В© 2011-2024 Copyright www.trav4.net