Toyota Tundra. Manual — part 2717

INSPECTION PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

a. Check the "COMMUNICATION STOP MODE TABLE" of the CAN communication system (see

CAN COMMUNICATION SYSTEM ).

Result

RESULT REFERENCE TABLE

B: GO TO CAN COMMUNICATION SYSTEM (See CAN COMMUNICATION SYSTEM )

A: Go to next step.

2. READ VALUE USING TECHSTREAM (SPEED SIGNAL)

a. Use the Data List to check if the speed signal is functioning properly.

Tilt & Telescopic

TILT AND TELESCOPIC - DATA LIST TABLE

Result

RESULT REFERENCE TABLE

HINT:

B2624



The auto away function is disabled with the last vehicle
speed signal* of 10 km/h (6 mph) or more.



The vehicle speed signal is lost for 5 seconds or more and
the auto away/return function is disabled.



Combination meter



Multiplex tilt and
telescopic ECU

HINT:
*: If the ignition switch is turned OFF immediately after the vehicle comes to a sudden stop, the last
vehicle speed signal may not be 0 km/h (0 mph).

Tester Display

Proceed to

"Meter" is displayed.

A

"Meter" is not displayed.

B

Tester

Display

Measurement Item/Range

Normal

Condition

Diagnostic

Note

Freeze Speed

Info

Vehicle speed data/min.: 0 km/h (0 mph), max.:
255 km/h (158 mph)

Actual vehicle
speed

-

Result

Proceed to

OK or NG (Tester indication is abnormal)

A

NG (Meter indication is abnormal)

B

2009 Toyota Tundra

2009 STEERING Steering Column - Tundra

A vehicle speed of 3 km/h (2 mph) or more may be displayed on the Techstream screen
immediately after the vehicle comes to a sudden stop. This is caused by a delay in vehicle signal
input via the communication bus and is not a malfunction.

B: CHECK COMBINATION METER SYSTEM (See HOW TO PROCEED WITH
TROUBLESHOOTING )

A: REPLACE MULTIPLEX TILT AND TELESCOPIC ECU (See MULTIPLEX TILT AND
TELESCOPIC ECU (for Power Tilt and Power Telescopic Steering Column) )

ACTUATOR POWER SOURCE CIRCUIT

DESCRIPTION

This is the power source for the motors.

WIRING DIAGRAM

Fig. 40: Identifying Actuator Power Source - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. INSPECT FUSE (TI & TE)

a. Remove the TI & TE fuse from the main body ECU.

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

Standard Resistance

STANDARD RESISTANCE SPECIFICATION TABLE

2009 Toyota Tundra

2009 STEERING Steering Column - Tundra

NG: REPLACE FUSE

OK: Go to next step.

2. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU -

BATTERY)

a. Disconnect the J47 multiplex tilt and telescopic ECU connector.

b. Measure the voltage according to the value (s) in the table below.

Standard Voltage

STANDARD VOLTAGE SPECIFICATION TABLE

Fig. 41: Identifying J47 Multiplex Tilt & Telescopic ECU Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.

3. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY

GROUND)

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

Standard Resistance

Tester Connection Condition Specified Condition

TI & TE fuse

Always

Below 1 ohms

Tester Connection

Condition Specified Condition

J47-2 (+B) - Body ground Always

11 to 14 V

2009 Toyota Tundra

2009 STEERING Steering Column - Tundra

STANDARD RESISTANCE SPECIFICATION TABLE

Fig. 42: Identifying J47 Multiplex Tilt & Telescopic ECU Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: CHECK IG POWER SOURCE CIRCUIT (See IG POWER SOURCE CIRCUIT )

IG POWER SOURCE CIRCUIT

DESCRIPTION

When the ignition switch is turned ON, the IG power source circuit supplies positive (+) voltage to the
multiplex tilt and telescopic ECU.

The multiplex tilt and telescopic ECU also receives ignition switch signals via this circuit.

WIRING DIAGRAM

Tester Connection

Condition Specified Condition

J47-11 (GND) - Body ground Always

Below 1 ohms

2009 Toyota Tundra

2009 STEERING Steering Column - Tundra