Toyota RAV4 (XA40) 2013-2018 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
Inspection procedure
- Check wire harness (center airbag sensor assembly - battery)
- Turn the ignition switch off.
- Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
- Disconnect the e45 connector from the center airbag sensor .
- Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
- Measure the voltage of the wire harness side connectors.
Standard voltage 
- Check wire harness (center airbag sensor assembly - body ground)
- Measure the resistance of the wire harness side connectors.
Standard resistance 
- Check wire harness (center airbag sensor assembly - body ground)
- Measure the resistance of the wire harness side connectors.
Standard resistance 
- Check srs warning light
- Turn the ignition switch off.
- Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
- Connect the e45 center airbag sensor connector.
- Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
- Turn the ignition switch on, and wait for at least 6 seconds.
- 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:
Rear axle hub bolt
Components
Replacement
Hint:
Use the same procedures for the rh side and lh side.
The procedures listed below are for the lh side.
Remove rear wheel
Remove rear disc brake cylinder assembly
lh (see page br-55)
Remove rear disc (see page br-57)
Remove rear axle hub bolt
...
Selecting the driving mode
The following modes can be selected to suit driving conditions.
Eco drive mode
Use eco drive mode to help achieve low fuel consumption during
trips that involve frequent accelerating.
Press the “eco mode” button
to select eco drive mode.
The “eco mode” indicator
comes on.
Press t ...
Opening/closing the back
door (vehicles with power
back door)
■ Using the wireless remote
control
Press and hold the switch.
The power back door automatically
opens/closes.
Pressing the switch while the power
back door is opening/closing stops
the operation. When the switch is
pressed and held again during the
halted operation, the back door will
perform t ...
