Toyota RAV4 manuals

Toyota RAV4 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

Stuck in deceleration sensor
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:

General maintenance (2006/01- )
Inspect steering linkage and gear housing Check the steering wheel free play. Check the steering linkage for looseness or damage. Check that the tie rod ends do not have excessive play. Check that the dust seals and boots are not damaged. Check that the boot clamps are not ...

Disassembly
Remove generator pulley with clutch Remove the cap from the pulley. Using a screwdriver, puncture the center of the cap and pry it off. Notice: Do not reuse the cap. Install sst to the pulley and vise as shown in the illustration. Sst 09820-63020 Mount sst (a) i ...

Air conditioning control assembly (for manual air conditioning system)
Components Removal Disconnect cable from negative battery terminal Notice: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Remove no. 2 Instrument cluster finish panel center ...

В© 2011-2019 Copyright www.trav4.net