Toyota RAV4 (XA40) 2013-2018 Service Manual: Open in stop light switch circuit
Description
The skid control ecu detects the brake operating conditions through a signal transmitted by the stop light switch. The skid control ecu incorporates an open circuit detection circuit. This dtc is set under either of the following conditions:
- An open is detected in the stop light signal input line when the stop light switch is off.
- An open is detected in the stop light circuit lead to the ground when the stop light switch is off.
Wiring diagram
Inspection procedure
- Read value of intelligent tester (stop light switch)
- Check the data list for proper functioning of the stop light switch.
Ok: on (brake pedal is depressed) appears on the screen.
- Check wire harness (stp voltage)
- Disconnect the a19 ecu connector.
- Measure the voltage of the wire harness side connector.
Standard voltage 
Replace abs and traction actuator assembly
- Inspect fuse (stop, ecu-ig1)
- Remove the stop fuse and ecu-ig1 fuse from the instrument panel junction block.
- Measure the resistance of the fuse.
Standard resistance:
below 1 
- Inspect stop light control relay (marking: brk)
- Remove the stop light control relay from the engine room no. 1 Relay block.
- Measure the resistance of the relay.
- Inspect stop light switch assembly
- Disconnect the stop light switch connector.
- Measure the resistance of the switch.
Standard resistance 
- Check wire harness (skid control ecu - stop light switch)
- Disconnect the a19 ecu connector.
- Disconnect the a3 switch connector.
- Measure the resistance of the wire harness side connectors.
- Disconnect the a19 ecu connector.
- Disconnect the a3 switch connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance 
- Reconfirm dtc
- Clear the dtc (see page bc-47).
- Check if the same dtc is output (see page bc-47).
Result 
Replace abs and traction actuator assembly
Master cylinder pressure sensor malfunction
Description
The master cylinder pressure sensor is connected to the skid control ecu in
the abs and traction
actuator.
Dtc c1281/81 can be detected when the master cylinder pressure sensor ...
Open in pump motor circuit
Description
The motor relay drives the pump motor based on a signal from the skid control
ecu.
Wiring diagram
Refer to dtc c0273/13, c0274/14, c1361/91 (see page bc-79).
Inspection proce ...
Other materials:
Vehicle speed sensor "A"
description
The speed sensor detects the wheel speed and sends the appropriate signals to
the skid control ecu.
The skid control ecu converts these wheel speed signals into a 4-pulse signal
and outputs it to the ecm
via the combination meter. The ecm determines the vehicle speed based o ...
Removal
Discharge fuel system pressure (see page
fu-9)
Drain coolant (see page co-6)
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 ...
Settings display
Vehicle settings and the content
displayed on the screen can be
changed by using the meter
control switches.
â– Setting procedure
1. Operate or
of the
meter control switches and
select .
2. Operate or
of the
meter control switches and
select the desired item.
If the function is turned on and ...
