Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: Low battery positive voltage

Toyota RAV4. Low battery positive voltage


Description

When there is an abnormality in the power supply circuit of the brake actuator (skid control ecu), the skid control ecu sets a dtc and the operation is prohibited by the fail-safe function. This dtc is set when the voltage supplied to terminal ig1 is outside the dtc detection threshold, due to abnormalities of the battery, power source circuits or charging circuits such as the alternator circuit.

The fail-safe function is canceled when the voltage to terminal ig1 returns to normal.

Toyota RAV4. Low battery positive voltage


Wiring diagram

Toyota RAV4. Wiring diagram


Inspection procedure

  1. Inspect fuse (ecu-ig1)

  1. Remove the ecu-ig1 fuse from the instrument panel junction block.
  2. Measure the resistance of the fuse.

Standard resistance: below 1




  1. Inspect battery

  1. Check the battery voltage.

Standard voltage: 11 to 14 v



  1. Check wire harness (skid control ecu - battery)

Toyota RAV4. Check wire harness (skid control ecu - battery)


  1. Disconnect the a19 ecu connector.
  2. Measure the voltage of the wire harness side connector.

Standard voltage




  1. Check wire harness (skid control ecu - body ground)

Toyota RAV4. Check wire harness (skid control ecu - body ground)


  1. Disconnect the a19 ecu connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance 




  1. Reconfirm dtc

  1. Clear the dtc (see page bc-47).
  2. Drive the vehicle at 3 km/h (2 mph) or more for several seconds.
  3. Check if the same dtc is output (see page bc-47).

Result




Replace abs and traction actuator assembly

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Description The skid control ecu receives signals from the yaw rate and deceleration sensor via the can communication system. The yaw rate sensor has a built-in deceleration sensor and dete ...

Master cylinder pressure sensor malfunction
Description The master cylinder pressure sensor is connected to the skid control ecu in the abs and traction actuator. Dtc c1281/81 can be detected when the master cylinder pressure sensor ...

Other materials:

If a warning message is displayed
The multi-information display shows warnings of system malfunctions, incorrectly performed operations, and messages that indicate a need for maintenance. When a message is shown, perform the correction procedure appropriate to the message. If a warning message is displayed again after the appropri ...

Head restraints
Head restraints are provided for all seats. WARNING â– Head restraint precautions Observe the following precautions regarding the head restraints. Failure to do so may result in death or serious injury. Use the head restraints designed for each respective seat. Adjust the head restraints to th ...

Terminals of ecm
Check ecm Disconnect the a9 and b30 connectors. Measure the voltage and resistance of the wire harness side connectors. If the result is not as specified, there may be a malfunction on the wire harness side. ...

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