Toyota Tundra. Manual — part 916

Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking
the suspected areas in the order they are listed. Replace parts as necessary.

Vehicle Stability Control System

PROBLEM SYMPTOM TABLE

NOTE:

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

Symptom

Suspected Area

Reference

ABS, BA and/or EBD does not
operate

Check for DTCs again and make

sure that normal system code

displayed

DTC CHECK/CLEAR

IG power source circuit

DTC C1241/41: LOW BATTERY

POSITIVE VOLTAGE OR

ABNORMALLY HIGH

BATTERY POSITIVE

VOLTAGE

Front speed sensor circuit

DTC C0200/31, C0205/32,

C1271/71, C1272/72, C1275/75,

C1276/76, C1330/35, C1331/36:

RIGHT FRONT WHEEL

SPEED SENSOR SIGNAL;

LEFT FRONT WHEEL SPEED

SENSOR SIGNAL; LOW

OUTPUT SIGNAL OF FRONT

SPEED SENSOR RH (TEST

MODE DTC); LOW OUTPUT

SIGNAL OF FRONT SPEED

SENSOR LH (TEST MODE

DTC); ABNORMAL CHANGE

IN OUTPUT SIGNAL OF

FRONT SPEED SENSOR RH

(TEST MODE DTC);

ABNORMAL CHANGE IN

OUTPUT SIGNAL OF FRONT

SPEED SENSOR LH (TEST

MODE DTC); OPEN CIRCUIT

IN RIGHT FRONT WHEEL

SPEED SENSOR CIRCUIT;

OPEN CIRCUIT IN LEFT

FRONT WHEEL SPEED

SENSOR CIRCUIT

Rear speed sensor circuit

DTC C0210/33, C0215/34,

C1273/73, C1274/74, C1277/77,

C1278/78, C1332/37, C1333/38:

RIGHT REAR WHEEL SPEED

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

SENSOR SIGNAL; LEFT REAR

WHEEL SPEED SENSOR

SIGNAL; LOW OUTPUT

SIGNAL OF REAR SPEED

SENSOR RH (TEST MODE

DTC); LOW OUTPUT SIGNAL

OF REAR SPEED SENSOR LH

(TEST MODE DTC);

ABNORMAL CHANGE IN

OUTPUT SIGNAL OF REAR

SPEED SENSOR RH (TEST
MODE DTC); ABNORMAL

CHANGE IN OUTPUT SIGNAL

OF REAR SPEED SENSOR LH

(TEST MODE DTC); OPEN

CIRCUIT IN RIGHT REAR

WHEEL SPEED SENSOR

CIRCUIT; OPEN CIRCUIT IN

LEFT REAR WHEEL SPEED

SENSOR CIRCUIT

Master cylinder pressure sensor

(Check master cylinder pressure

sensor by performing test mode

inspection)

TEST MODE PROCEDURE

Check VSC actuator using

Techstream (Check VSC actuator

operation using Active Test

function). If abnormal, check

hydraulic circuit for leakage.

BRAKE ACTUATOR

If symptoms still occur even after

above circuits in suspected areas

inspected and proved to be

normal, replace VSC actuator

(skid control ECU)

BRAKE ACTUATOR

Check for DTCs again and make

sure that normal system code

displayed

DTC CHECK/CLEAR

Front speed sensor circuit

DTC C0200/31, C0205/32,

C1271/71, C1272/72, C1275/75,

C1276/76, C1330/35, C1331/36:

RIGHT FRONT WHEEL

SPEED SENSOR SIGNAL;

LEFT FRONT WHEEL SPEED

SENSOR SIGNAL; LOW

OUTPUT SIGNAL OF FRONT

SPEED SENSOR RH (TEST

MODE DTC); LOW OUTPUT

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

ABS, BA and/or EBD does not
operate efficiently

SIGNAL OF FRONT SPEED

SENSOR LH (TEST MODE

DTC); ABNORMAL CHANGE

IN OUTPUT SIGNAL OF

FRONT SPEED SENSOR RH

(TEST MODE DTC);

ABNORMAL CHANGE IN

OUTPUT SIGNAL OF FRONT

SPEED SENSOR LH (TEST

MODE DTC); OPEN CIRCUIT

IN RIGHT FRONT WHEEL

SPEED SENSOR CIRCUIT;

OPEN CIRCUIT IN LEFT

FRONT WHEEL SPEED

SENSOR CIRCUIT

Rear speed sensor circuit

DTC C0210/33, C0215/34,

C1273/73, C1274/74, C1277/77,

C1278/78, C1332/37, C1333/38:

RIGHT REAR WHEEL SPEED

SENSOR SIGNAL; LEFT REAR

WHEEL SPEED SENSOR

SIGNAL; LOW OUTPUT

SIGNAL OF REAR SPEED

SENSOR RH (TEST MODE

DTC); LOW OUTPUT SIGNAL

OF REAR SPEED SENSOR LH

(TEST MODE DTC);

ABNORMAL CHANGE IN

OUTPUT SIGNAL OF REAR

SPEED SENSOR RH (TEST
MODE DTC); ABNORMAL

CHANGE IN OUTPUT SIGNAL

OF REAR SPEED SENSOR LH

(TEST MODE DTC); OPEN

CIRCUIT IN RIGHT REAR

WHEEL SPEED SENSOR

CIRCUIT; OPEN CIRCUIT IN

LEFT REAR WHEEL SPEED

SENSOR CIRCUIT

Stop light switch circuit

DTC C1249/49: OPEN IN STOP

LIGHT SWITCH CIRCUIT

Master cylinder pressure sensor

(Check master cylinder pressure

sensor by performing test mode

inspection)

TEST MODE PROCEDURE

Check VSC actuator using

Techstream (Check VSC actuator

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

operation using Active Test

function). If abnormal, check

hydraulic circuit for leakage.

BRAKE ACTUATOR

If symptoms still occur even after

above circuits in suspected areas

inspected and proved to be

normal, replace VSC actuator

(skid control ECU)

BRAKE ACTUATOR

Check for DTCs again and make

sure that normal system code

displayed

DTC CHECK/CLEAR

IG power source circuit

DTC C1241/41: LOW BATTERY

POSITIVE VOLTAGE OR

ABNORMALLY HIGH

BATTERY POSITIVE

VOLTAGE

Check hydraulic circuit for

leakage

BRAKE ACTUATOR

Front speed sensor circuit

DTC C0200/31, C0205/32,

C1271/71, C1272/72, C1275/75,

C1276/76, C1330/35, C1331/36:

RIGHT FRONT WHEEL

SPEED SENSOR SIGNAL;

LEFT FRONT WHEEL SPEED

SENSOR SIGNAL; LOW

OUTPUT SIGNAL OF FRONT

SPEED SENSOR RH (TEST

MODE DTC); LOW OUTPUT

SIGNAL OF FRONT SPEED

SENSOR LH (TEST MODE

DTC); ABNORMAL CHANGE

IN OUTPUT SIGNAL OF

FRONT SPEED SENSOR RH

(TEST MODE DTC);

ABNORMAL CHANGE IN

OUTPUT SIGNAL OF FRONT

SPEED SENSOR LH (TEST

MODE DTC); OPEN CIRCUIT

IN RIGHT FRONT WHEEL

SPEED SENSOR CIRCUIT;

OPEN CIRCUIT IN LEFT

FRONT WHEEL SPEED

SENSOR CIRCUIT

Rear speed sensor circuit

DTC C0210/33, C0215/34,

C1273/73, C1274/74, C1277/77,

C1278/78, C1332/37, C1333/38:

RIGHT REAR WHEEL SPEED

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra