Toyota Tundra (2015 year). Manual — part 226

DTC

CODE

DIAGNOSIS

TROUBLE AREAS

Speed sensor circuit

Sensor installation

Speed sensor circuit

Sensor installation

C1275/75

Sensor installation

Speed sensor rotor

Foreign matter on sensor tip or sensor

rotor

C1276/76

Sensor installation

Speed sensor rotor

Foreign matter on sensor tip or sensor

rotor

C1277/77

Sensor installation

Speed sensor rotor

Foreign matter on sensor tip or sensor

rotor

C1278/78

Sensor installation

Speed sensor rotor

Foreign matter on sensor tip or sensor

rotor

C1279/79 Deceleration sensor output voltage malfunction

Yaw rate sensor and deceleration sensor

Sensor installation

C1281/81

Master cylinder pressure sensor output

malfunction

Master cylinder brake fluid pressure

sensor

Master cylinder brake fluid pressure

sensor circuit

Stop light switch circuit

VSC actuator (skid control ECU)

Brake booster assembly

HINT:

C1275/75 to C1278/78: Abnormal speed sensor output frequency is as shown in the illustration.

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: T...

Last Modified: 9-16-2014

6.6 T

Doc ID: RM000000OS704ZX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: PROBLEM SYMPTOMS TABLE; 2015 MY Tundra

[08/2014 - ]

PROBLEM SYMPTOMS TABLE

the suspected areas in the order they are listed. Replace parts as necessary.

NOTICE:

When replacing the VSC actuator or sensor, turn the ignition switch off.

Vehicle Stability Control System

SYMPTOM

SUSPECTED AREA

SEE

PAGE

ABS, BA and/or EBD does not

operate

Check for DTCs again and make sure that normal system code

displayed

Power source circuit

Front speed sensor circuit

Rear speed sensor circuit

Master cylinder pressure sensor (Check master cylinder pressure

sensor by performing test mode inspection)

Check VSC actuator using Techstream (Check VSC actuator operation

using Active Test function). If abnormal, check hydraulic circuit for

leakage.

If symptoms still occur even after above circuits in suspected areas

inspected and proved to be normal, replace VSC actuator (skid control

ECU)

ABS, BA and/or EBD does not

operate efficiently

Check for DTCs again and make sure that normal system code

displayed

Front speed sensor circuit

Rear speed sensor circuit

Stop light switch circuit

Master cylinder pressure sensor (Check master cylinder pressure

sensor by performing test mode inspection)

Check VSC actuator using Techstream (Check VSC actuator operation

using Active Test function). If abnormal, check hydraulic circuit for

leakage.

If symptoms still occur even after above circuits in suspected areas

inspected and proved to be normal, replace VSC actuator (skid control

ECU)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: ...

SYMPTOM

SUSPECTED AREA

SEE

PAGE

VSC and/or TRAC does not

operate

Check for DTCs again and make sure that normal system code

displayed

Power source circuit

Check hydraulic circuit for leakage

Front speed sensor circuit

Rear speed sensor circuit

Yaw rate and deceleration sensor circuit

Steering angle sensor circuit

If symptoms still occur even after above circuits in suspected areas

inspected and proved to be normal, replace VSC actuator (skid control

ECU)

Sensor signal check cannot be

performed

TS and CG terminal circuit

VSC actuator (skid control ECU)

DTC check cannot be

performed

Check for DTCs again and make sure that normal system code

displayed

TC and CG terminal circuit

If symptoms still occur even after above circuits in suspected areas

inspected and proved to be normal, replace VSC actuator (skid control

ECU)

ABS warning light abnormal

(Remains on)

ABS warning light circuit

VSC actuator (skid control ECU)

ABS warning light abnormal

(Does not come on)

ABS warning light circuit

VSC actuator (skid control ECU)

BRAKE warning light

abnormal (Remains on)

BRAKE warning light circuit

VSC actuator (skid control ECU)

BRAKE warning light

abnormal (Does not come on)

BRAKE warning light circuit

VSC actuator (skid control ECU)

SLIP indicator light abnormal

(Remains on)

SLIP indicator light circuit

VSC actuator (skid control ECU)

SLIP indicator light abnormal

(Does not come on)

SLIP indicator light circuit

VSC actuator (skid control ECU)

TRAC OFF indicator light

abnormal (Remains on)

TRAC OFF indicator light circuit

VSC actuator (skid control ECU)

TRAC OFF indicator light

abnormal (Does not come on)

TRAC OFF indicator light circuit

VSC actuator (skid control ECU)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: ...