Toyota RAV4 (XA40) 2013-2018 Service Manual: Downhill assist control indicator light remains on
Description
When the downhill assist control switch is pushed on, the downhill assist control function is available and the downhill assist control indicator light illuminates.
Hint:
Even if the downhill assist control switch is pressed, the downhill assist control indicator light will blink and downhill assist control will not be activated under the following conditions:
- Gear position is not l or r.
- The system is malfunctioning.
- Temperature of the hydraulic brake booster increases and downhill assist control is temporarily canceled.
- The vehicle speed is 25 km/h (15 mph) or more.
Wiring diagram
Inspection procedure
Check can communication system
- Check if the can communication system dtc is output (see page ca-34).
Result 
- 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 downhill assist control switch
- Remove the downhill assist control switch.
- Measure the resistance of the switch.
Standard resistance 
- Check wire harness (control switch - skid control ecu and body ground)
- Disconnect the a19 ecu connector.
- Disconnect the e31 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 assemb
ly
Slip indicator light does not come on
Description
Refer to the description of "slip indicator light remains on" (see page
bc-152).
Wiring diagram
Refer to the slip indicator light circuit (see page bc-152).
Inspection proc ...
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 ...
Other materials:
Disassembly
Caution:
Wear protective gloves. Sharp areas on the seatback
frame, seat cushion frame and reclining adjuster may
injure your hands.
Remove rear seat headrest assembly
Remove rear seat center headrest
assembly
Remove center armrest hinge cover rh
Return the seatback to the upr ...
Seat heater system
Parts location
System diagram
Problem symptoms table
Hint:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in order of probability in the "suspected area" column
of the table. Check each symptom by check ...
Inspection
Inspect no. 1 Chain tensioner
Check that the plunger moves smoothly when the
ratchet pawl is raised with your finger.
Release the ratchet pawl, then check that the
plunger is locked in place by the ratchet pawl and
does not move when pushed with your finger.
Inspect chain ...
