Toyota RAV4 manuals

Toyota RAV4 Service Manual: 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 from off to on, and then goes off automatically.

If there is a malfunction in the srs, the srs warning light comes on to inform the driver of a problem.

When terminals tc and cg of the dlc3 are connected, the dtc is displayed by blinking the srs warning light.

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 battery voltage drops, the voltage-increase circuit (dc-dc converter) functions to increase the voltage of the srs to normal voltage.

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.

The signal to illuminate the srs warning light is transmitted from the center airbag sensor to the combination meter through the multiplex communication system.

Wiring diagram

Toyota RAV4. Srs warning light remains on


Inspection procedure

Check battery

  1. Measure the voltage of the battery.

Standard voltage: 11 to 14 v



  1. Check connector

  1. Turn the ignition switch off.
  2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3. Check that the connectors are properly connected to the center airbag sensor and combination meter.

Ok: the connectors are properly connected.



  1. Check wire harness (source voltage of center airbag sensor assembly)

Toyota RAV4. Check wire harness (source voltage of center airbag sensor assembly)


  1. Disconnect the e45 connector from the center airbag sensor .
  2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  3. Turn the ignition switch on.
  4. Operate all components of the electrical system (defogger, wipers, headlight, heater blower, etc.).
  5. Measure the voltage of the wire harness side connectors.

Standard voltage


  1. Turn the ignition switch off.
  2. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check wire harness (source voltage of combination meter)

Toyota RAV4. Check wire harness (source voltage of combination meter)


  1. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  2. Disconnect the e19 connector from the combination meter.
  3. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  4. Turn the ignition switch on.
  5. Measure the voltage of the wire harness side connectors.

Standard voltage


  1. Turn the ignition switch off.
  2. 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 e19 connector to the combination meter.
  4. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  5. Turn the ignition switch on.
  6. Check the srs warning light condition.

Ok: after the primary check period, srs warning light goes off for approximately 10 seconds, and turning it on is continued.

Hint:

The primary check period shows approximately 6 seconds after the ignition switch is on.



Replace center airbag sensor assembly

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-increa ...

Srs warning light does not come 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:

Center power outlet socket
Components Removal Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Remove no. 1 Console upper panel garnish (see page ...

Customize parameters
Notice: When the customer requests a change in a function, first make sure that the function can be customized. Make a note of the current settings before customizing. When troubleshooting a function, first make sure that the function is set to the default setting. Combination me ...

Front door lock
Inspection Inspect front door with motor lock assembly lh Apply the battery voltage to the motor terminals and check the operation of the door lock motor. Ok If the result is not as specified, replace the door lock assembly. Measure the resistance of the door lock position ...

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