Toyota Tundra (2015 year). Manual — part 261
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000001CGN03HX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: Brake Warning Light Remains ON; 2015 MY
Tundra [08/2014 - ]
Brake Warning Light Remains ON
DESCRIPTION
1.
The brake fluid level is insufficient.
2.
The parking brake is applied.
3.
The EBD system is malfunctioning.
4.
The booster vacuum pressure is abnormal.
5.
The pedal stroke sensor is malfunctioning.
6.
WIRING DIAGRAM
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: Br...
INSPECTION PROCEDURE
NOTICE:
When replacing the VSC actuator assembly, perform zero point calibration
.
PROCEDURE
1.
PREPARE FOR INSPECTION
The parking brake is released.
HINT:
When the ABS warning light remains illuminated, repair the malfunction in the ABS system first.
When the SLIP indicator light remains illuminated, repair the malfunction in the VSC system first.
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: Br...
NEXT
A
A
2.
CHECK DTC
(a) Check if any ABS DTCs are output
.
Result
RESULT
PROCEED TO
DTC is not output
A
DTC is output
B
B
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
3.
INSPECT CAN COMMUNICATION SYSTEM
(a) Check if a CAN communication system DTC is output
.
Result
RESULT
PROCEED TO
DTC is not output
A
DTC is output
B
B
GO TO CAN COMMUNICATION SYSTEM
4.
CHECK CONNECTOR CONNECTION CONDITION
(a) Check if the skid control ECU connector is connected securely.
OK:
The connector is connected securely.
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: Br...
OK
OK
NG
CONNECT CONNECTOR CORRECTLY
5.
CHECK PARKING BRAKE SWITCH ASSEMBLY
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Select Data List mode and check the parking brake switch using the Techstream.
ABS/VSC/TRAC
TESTER DISPLAY
MEASUREMENT ITEM/RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
Parking Brake SW
Parking brake switch / ON or OFF
ON: Parking brake applied
OFF: Parking brake released
-
(e) Check that ON and OFF are properly indicated on the Techstream display when the parking brake
lever is operated.
OK:
Techstream display changes in accordance with the parking brake lever operation.
NG
GO TO STEP 9
6.
INSPECT BRAKE FLUID LEVEL WARNING SWITCH
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: Br...
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