Toyota RAV4 manuals

Toyota RAV4 Service Manual: Source voltage drop

Description

The srs is equipped with a voltage-increase circuit (dc-dc converter) in the center airbag sensor in case the source voltage drops.

When the source voltage drops, the voltage-increase circuit (dc-dc converter) functions to increase the voltage of the srs to a normal working level.

A malfunction in this circuit is displayed differently from other codes, in the fact that no dtcs are recorded. With a normal system code present, the source voltage drop is indicated when the srs warning light comes on.

A malfunction in this circuit is not recorded in the center airbag sensor .

The srs warning light automatically goes off when the source voltage returns to normal.

Wiring diagram

Toyota RAV4. Source voltage drop


Inspection procedure

  1. Check wire harness (center airbag sensor assembly - battery)

Toyota RAV4. Check wire harness (center airbag sensor assembly - battery)


  1. Turn the ignition switch off.
  2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3. Disconnect the e45 connector from the center airbag sensor .
  4. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  5. Measure the voltage of the wire harness side connectors.

Standard voltage




  1. Check wire harness (center airbag sensor assembly - body ground)

Toyota RAV4. Check wire harness (center airbag sensor assembly - body ground)


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

Standard resistance




  1. Check wire harness (center airbag sensor assembly - body ground)

Toyota RAV4. Check wire harness (center airbag sensor assembly - body ground)


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

Standard resistance




  1. Check srs warning light

  1. Turn the ignition switch off.
  2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3. Connect the e45 center airbag sensor connector.
  4. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  5. Turn the ignition switch on, and wait for at least 6 seconds.
  6. Operate all components of the electrical system (defogger, wiper, headlight, heater, blower, etc.) And check that the srs warning light does not come on.

Ok: srs warning light does not come on.



End

Short in front passenger side pretensioner squib circuit
Description The front passenger side front pretensioner squib circuit consists of the center airbag sensor and the front seat outer belt rh. This circuit instructs the srs to deploy whe ...

Srs warning light remains on
Description The srs warning light is located on the combination meter. When the srs is normal, the srs warning light comes on for approximately 6 seconds after the ignition switch is turned fro ...

Other materials:

Installation
Notice: Do not heat the vehicle body, emblem and name plate excessively. Hint: When installing the emblem and name plate, heat the vehicle body, emblem and name plate using a heat light. Standard heating temperature Install no. 4 Back door name plate (for 4wd) Clean the vehicle body ...

Torque converter and drive plate
Inspection Inspect torque converter clutch assembly Inspect the one-way clutch. Install sst to the inner race of the one-way clutch. Sst 09350-32014 (09351-32010) Set sst so that it fits in the notch of the converter hub and in the outer race of the oneway clutch. ...

Using the radio
Power Volume Adjusting the frequency Scanning for receivable stations Am/fm mode button Station selectors Seeking the frequency Displaying text message Setting station presets Search for the desired stations by turning the ¢§tune¢escroll¢¸ knob or ...

© 2011-2021 Copyright www.trav4.net