Toyota Tundra (2015 year). Manual — part 249
OK
NG
GO TO STEP 3
2.
RECONFIRM DTC
(a) Clear the DTC
.
(b) Start the engine.
(c) Check if the same DTC is output
.
Result
RESULT
PROCEED TO
DTC is output
A
DTC is not output
B
B
USE SIMULATION METHOD TO CHECK
A
REPLACE VSC ACTUATOR ASSEMBLY
3.
INSPECT FUSE (ABS1)
(a) Remove the ABS1 H-fuse from the engine room relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
OK
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
ABS1 H-fuse
Always
Below 1 Ω
NG
CHECK FOR SHORTS IN ALL HARNESSES AND
CONNECTORS CONNECTED TO FUSE AND REPLACE
FUSE
4.
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY AND BODY
GROUND)
(a) Disconnect the A17 ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A17-1 (+BM) - Body ground
Always
11 to 14 V
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A17-16 (GND1) - Body ground
Always
Below 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE VSC ACTUATOR ASSEMBLY
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000001P4S01AX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1267/28; Brake Pedal Load Sensing Switch;
2015 MY Tundra [08/2014 - ]
DTC
C1267/28 Brake Pedal Load Sensing Switch
DESCRIPTION
The skid control ECU detects if the brake pedal is depressed.
DTC NO.
DTC DETECTION CONDITION
TROUBLE AREA
C1267/28
logic malfunction.
1.
When brake pedal is not depressed,
micro switch turns on.
2.
When brake pedal is depressed, micro
switch turns off.
3.
Booster pedal micro switch (Active
brake booster)
Booster pedal micro switch (Active
brake booster) circuit
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When replacing the VSC actuator assembly, perform zero point calibration
.
PROCEDURE
1.
CHECK TERMINAL VOLTAGE (BOOSTER PEDAL MICRO SWITCH)
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
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