Toyota RAV4 (XA40) 2013-2018 Service Manual: Open in abs solenoid relay circuit
Description
The solenoid relay supplies power to the abs solenoid and trc solenoid.
After the ignition switch is turned on, the vehicle speed has reached 6 km/h (4 mph) and the solenoid is determined to be normal by the initial check self-diagnosis, the relay switches on. If any open or short circuits are detected, the relay switches off.
These dtcs may be set if the voltage supply to the solenoid relay (+bs) falls below the dtc detection threshold due to the battery or alternator outputs being insufficient.
Hint:
Dtcs c0278/11 and c0279/12: the skid control ecu begins to detect these dtcs when the vehicle speed exceeds 6 km/h (4 mph).
Wiring diagram
Refer to dtc c0273/13, c0274/14, c1361/91 (see page bc-79).
Inspection procedure
- Inspect fuses (abs2)
- Remove the abs2 h-fuse from the engine room no. 1 Relay block.
- Measure the resistance of the fuse.
Standard resistance:
below 1 
- Check wire harness (skid control ecu - battery and body ground)
- Disconnect the a19 ecu connector.
- Measure the voltage of the wire harness side connector.
Standard voltage 
- Measure the resistance of the wire harness side connector.
Standard resistance 
- Reconfirm dtc
- Clear the dtcs (see page bc-47).
- Start the engine.
- Drive the vehicle at 6 km/h (4 mph) or more to activate the initial check.
- Check if the same dtcs is output (see page bc-47).
Result 
Replace abs and traction actuator assembly
Solenoid circuit
Description
This solenoid is turned on in accordance with signals from the skid control
ecu and controls the pressure
on the wheel cylinders to control the braking force.
The solenoid and s ...
Engine control system malfunction
Description
If a malfunction in the engine control system is detected, the operations of
vsc and trc are prohibited
by the fail-safe function. When the signals from the engine are input normal ...
Other materials:
Toyota Safety Sense 2.5
The Toyota Safety Sense
2.5 consists of the following
drive assist systems and
contributes to a safe and
comfortable driving experience:
Driving assist system
PCS (Pre-Collision System)
LTA (Lane Tracing Assist)
AHB (Automatic High
Beam)
RSA (Road Sign Assist) (if
equipped)
Dynamic radar cru ...
Skid control buzzer circuit
Description
The skid control buzzer sounds while the vsc is activated.
Wiring diagram
Inspection procedure
Notice:
When replacing the abs and traction actuator, perform the zero point
calibration (see page bc-
24).
Check can communication system
Check if the can communication d ...
RCTA function
â– Operation of the RCTA
function
The RCTA function uses rear
side radar sensors to detect
vehicles approaching from the right or left at the rear of the
vehicle and alerts the driver of
the presence of such vehicles
by flashing the outside rear view
mirror indicators and sounding a
buzzer.
Appr ...
