Toyota Sienna Service Manual: Open in Stop Light Switch Circuit
DTC C1249/49 Open in Stop Light Switch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK STOP LIGHT SWITCH OPERATION
(a) Check that the stop light comes on when the brake pedal is depressed and goes off when the brake pedal is released.
OK 
HINT: Check the stop light bulb as it may have burnt out.
2 INSPECT SKID CONTROL ECU (STP1 TERMINAL)
(a) Disconnect the skid control ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage 
3 RECONFIRM DTC
(a) Clear the DTCs (See page BC-82).
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs detected?
Result 
NOTICE: When replacing the brake actuator assembly, perform zero point calibration (See page BC-70).
REPLACE BRAKE ACTUATOR ASSEMBLY
4 INSPECT STOP LIGHT SWITCH
(a) Disconnect the stop light switch assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance 
5 CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - SKID CONTROL ECU)
(a) Disconnect the stop light switch connector and skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance 
NOTICE: When replacing the brake actuator assembly, perform zero point calibration (See page BC-70).
REPLACE BRAKE ACTUATOR ASSEMBLY
Master Cylinder Pressure Sensor Malfunction
DTC C1246/46 Master Cylinder Pressure Sensor Malfunction
DESCRIPTION
Master cylinder pressure sensor is connected to the skid control ECU in the
actuator.
INSPECTION PROCEDURE
1 READ VALUE O ...
Open in Pump Motor Circuit
DTC C1251/51 Open in Pump Motor Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ABS MOTOR RELAY)
(a) Connect the intelligent tester ...
Other materials:
Power seat switch
Inspection
1. INSPECT FRONT POWER SEAT SWITCH
Inspect the driver side power seat switch.
Measure the resistance according to the
value(s) in the table below.
Standard resistance:
Slide switch
Front vertical switch
Lifter switch
Reclining switch
If the res ...
Connecting a Bluetooth®
device
Up to 5 Bluetooth® devices (Phones [HFP] and audio players
[AVP]) can be registered.
If more than 1 Bluetooth® device has been registered, select
which device to connect to.
Press the “SETUP” button.
Select “Bluetooth*”.
*: Bluetooth is a registered trademark of Bluetooth SI ...
Short to B+ in Front Passenger Side Squib 2nd
Step Circuit
DTC B1188/56 Short to B+ in Front Passenger Side Squib 2nd
Step Circuit
DESCRIPTION
The front passenger side squib 2nd step circuit consists of the center airbag
sensor assembly and the
front passenger airbag assembly.
The circuit instructs the SRS to deploy when deployment conditions are m ...
