Toyota RAV4 (XA40) 2013-2018 Service Manual: Auto lsd indicator light remains on
Description
This is the auto lsd switch for 2wd. When the auto lsd switch is pushed on, the auto lsd function is available and the auto lsd indicator light illuminates.
Hint:
The auto lsd does not operate even if the auto lsd switch is pressed under the following conditions:
- The trc or vsc system is faulty.
- The temperature inside the hydraulic brake booster increases and the auto lsd operation is suspended.
Wiring diagram
Inspection procedure
- Check can communication system
- Check if the can communication system dtc is output (see page ca-34).
Result 
Ok: the connector is securely connected.
- Check skid control ecu connector
- Check if the skid control ecu connector is securely connected.
Ok: the connector is securely connected.
- Check wire harness (skid control ecu - body ground)
- Disconnect the a19 ecu connector.
- Measure the resistance of the wire harness side connector.
Standard resistance 
- Inspect auto lsd switch
- Remove the auto lsd switch.
- Measure the resistance of the switch.
Standard resistance 
- Check wire harness (skid control ecu - traction control switch)
- Disconnect the a19 ecu connector.
- Disconnect the e51 switch connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance 
- Check combination meter
- Check the combination meter (see page me-15).
Replace abs and traction actuator assembly
Downhill assist control indicator light does not come on
Description
Refer to the description of "downhill assist control indicator light remains
on" (see page bc-156).
Wiring diagram
Refer to the downhill assist control indicator light circu ...
Auto lsd indicator light does not come on
Description
Refer to the description of "auto lsd indicator light remains on" (see page
bc-164).
Wiring diagram
Refer to the auto lsd indicator light circuit (see page bc-165).
Inspect ...
Other materials:
Emission control system
Parts location
System diagram
On-vehicle inspection
Check fuel cut rpm
Increase the engine speed to at least 3,500 rpm.
Use a sound scope to check for injector operating
noise.
Check that the operating sounds stop momentarily
and then resume when the t ...
Check for intermittent problems
Check for intermittent problems
Hint:
A momentary interruption (open circuit) in the connectors
and/or wire harness between the sensors and ecus can
be detected by using the ecu data list function of an
intelligent tester.
Turn the ignition switch off and connect the
intelligent test ...
Front occupant classification sensor rh circuit malfunction
Description
The front occupant classification sensor rh circuit consists of the occupant
classification ecu and the
front occupant classification sensor rh.
Dtc b1781 is recorded when a malfunction is detected in the front occupant
classification sensor rh
circuit.
Wiring diagram
...
