Toyota Tundra. Manual — part 925

HINT:



DTCs C0200/31 and C1330/35 are for the front speed sensor RH.



DTCs C0205/32 and C1331/36 are for the front speed sensor LH.

WIRING DIAGRAM

Fig. 36: Identifying Front Speed Sensor - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

sensor rotor.

C1271/71
C1272/72

Detected only during test mode.



Front speed sensor



Front speed sensor circuit



Sensor installation



Foreign matter on sensor
rotor

C1275/75
C1276/76

Detected only during test mode.



Front speed sensor (open)



Front speed sensor circuit
(open)

C1330/35
C1331/36

Open in front speed sensor circuit
continues for 0.15 seconds or more.



Front speed sensor (open)



Front speed sensor circuit
(open)

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

1. READ VALUE USING TECHSTREAM (FRONT SPEED SENSOR)

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch to ON.

c. Select the Data List mode on the Techstream.

ABS/VSC/TRAC

DIAGNOSTIC NOTE TABLE

d. Check that the speed value output from the speed sensor displayed on the Techstream and the speed

value displayed on the speedometer are almost the same when driving the vehicle.

OK: The speed value output from the speed sensor displayed on the Techstream is the same
as the actual vehicle speed.

HINT:

There is a tolerance of +/-10% in the speedometer indication.

NG: Go to step 4

OK: Go to next step

2. PERFORM TEST MODE INSPECTION (SIGNAL CHECK)

a. Perform a TEST MODE inspection and check for DTCs (See TEST MODE PROCEDURE ).

OK: No DTC output.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (SPEED SENSOR CIRCUIT)

NOTE:



When replacing the VSC actuator assembly, perform zero point calibration
(See CALIBRATION ).



Check the speed sensor signal in test mode after cleaning or replacement
(See TEST MODE PROCEDURE ).

Tester Display

Measurement

Item/Range

Normal Condition

Diagnostic Note

FR Wheel Speed

Front wheel speed sensor
RH reading/min.: 0 km/h
(0 mph), max.: 326 km/h
(202 mph)

Actual wheel speed

Similar speed as
indicated on
speedometer

FL Wheel Speed

Front wheel speed sensor
LH reading/min.: 0 km/h
(0 mph), max.: 326 km/h
(202 mph)

Actual wheel speed

Similar speed as
indicated on
speedometer

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

OK: Go to next step

3. RECONFIRM DTC

a. Clear the DTC (s) (See DTC CHECK/CLEAR ).

b. Start the engine.

c. Drive the vehicle at a speed of 20 km/h (12 mph) or more for at least 60 seconds.

d. Check if the same DTC (s) is output (See DTC CHECK/CLEAR ).

Result

RESULT TABLE

B: Go to step 10

A: USE SIMULATION METHOD TO CHECK (See HOW TO PROCEED WITH
TROUBLESHOOTING )

4. CHECK FRONT SPEED SENSOR INSTALLATION

a. Check that the speed sensor installation bolt is tightened properly.

Torque: 11 N*m (107 kgf*cm, 8 ft.*lbf)

OK: The installation bolt is tightened properly.

Fig. 37: Identifying Speed Sensor Installation Bolt Clearance
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: TIGHTEN BOLT PROPERLY (See INSTALLATION )

OK: Go to next step

5. CHECK FRONT SPEED SENSOR

a. Visually check the speed sensor for deformation and damage.

Result

Proceed to

DTC is not output

A

DTC is output

B

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra

OK: No deformation or damage.

There is no gap between the sensor and front steering knuckle.

NG: REPLACE FRONT SPEED SENSOR (See REMOVAL )

OK: Go to next step

6. CHECK SPEED SENSOR TIP

a. Remove the speed sensor (See REMOVAL ).

b. Check the sensor tip.

OK: No scratches or foreign matter on the sensor tip.

NG: CLEAN OR REPLACE SPEED SENSOR (See REMOVAL )

OK: Go to next step

7. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - FRONT SPEED SENSOR)

a. Confirm that the skid control ECU connector and speed sensor connector are properly connected.

b. Disconnect the A17 ECU connector.

c. Disconnect the B1 and B2 sensor connectors.

d. Inspect both the connector case and the terminal for deformation and corrosion.

OK: No deformation or corrosion.

e. Measure the resistance according to the value(s) in the table below.

Standard Resistance: for RH

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection

Condition

Specified Condition

A17-45 (FR+) - B1-2 (FR+)

Always

Below 1 ohms

A17-46 (FR-) - B1-1 (FR-)

A17-45 (FR+) - Body ground

Always

10 kohms or higher

A17-46 (FR-) - Body ground

2009 Toyota Tundra

2009 BRAKES Brake Control - Tundra