Toyota Tundra. Manual — part 2709

2.77 V

S/B Mem1

Tilt and telescopic memory position
1/Not Mem or Mem

Not Mem: Position is not
memorized
Mem: Position is
memorized

-

S/B Mem2

Tilt and telescopic memory position
2/Not Mem or Mem

Not Mem: Position is not
memorized
Mem: Position is
memorized

-

S/B Mem3

Tilt and telescopic memory position
3/Not Mem or Mem

Not Mem: Position is not
memorized
Mem: Position is
memorized

-

T&T
Autoaway
Function

Auto away/return function/ON or OFF

ON: Auto away/return
function is allowed
OFF: Auto away/return
function is prohibited

-

Power Source
Voltage

Voltage data of power supply/min.: 0 V,
max.: 20 V

Actual power supply
voltage 11 to 14 V

-

Freeze Speed
Info

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

Actual vehicle speed

-

IG Switch
(CAN)

Communication state of ignition
switch/ON or OFF

ON: Communication is
normal
OFF: Communication is
interrupted

-

IG Switch

Input state of ignition switch/ON or
OFF

ON: Input signal is normal
OFF: Input signal is
interrupted

-

Key Switch
(CAN)

Communication state of key switch
signal/ON or OFF

ON: Communication is
normal
OFF: Communication is
interrupted

-

Key Code
Confirm
(CAN)

Communication state of key code
confirmation signal/ON or OFF

ON: Communication is
normal
OFF: Communication is
interrupted

-

Receive from
Meter

Communication state of combination
meter signal/OK or Interruption

OK: Communication is
normal
Interruption:
Communication is
interrupted

-

Receive from
Seat ECU

Communication state of front power
seat control ECU and switch LH
signal/OK or Interruption

OK: Communication is
normal
Interruption:
Communication is
interrupted

-

2009 Toyota Tundra

2009 STEERING Steering Column - Tundra

2. PERFORM ACTIVE TEST

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs and actuators and other items to be
operated without removing any parts. This non-intrusive functional inspection can be very useful because
intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests
early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while
performing Active Tests.

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch ON.

c. Turn the Techstream on.

d. Enter the following menus: Body/Tilt & Telescopic/Active Test.

e. Check the values by referring to the table below.

Tilt & Telescopic

TILT AND TELESCOPIC - ACTIVE TEST

DIAGNOSTIC TROUBLE CODE TABLE

HINT:

Receive from
Combi

Communication state of combination
switch ECU signal/OK or Interruption

OK: Communication is
normal
Interruption:
Communication is
interrupted

-

J/B

Communication state of main body
ECU signal/OK or Interruption

OK: Communication is
normal
Interruption:
Communication is
interrupted

-

B/B

Communication state of optional after
parts ECU signal/OK or Interruption

OK: Communication is
normal
Interruption:
Communication is
interrupted

-

The Number
of DTCs

Number of diagnostic trouble
codes/min.: 0, max.: 255

Actual number of
diagnostic trouble codes

-

Tester Display

Test Part

Control Range Diagnostic Note

Tilt operation

Tilt operation

UP/DOWN

-

Telesco operation Telescopic operation LONG/SHORT

-

2009 Toyota Tundra

2009 STEERING Steering Column - Tundra

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the
code, refer to the table below.

Power tilt and power telescopic steering column system

POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM

DTC Code

Detection Item

Trouble Area

B2602

Key Unlock Warning Switch
Circuit Malfunction



Unlock warning switch



Unlock warning switch
circuit



Main body ECU



Multiplex tilt and telescopic
ECU

B2603

Tilt and Telescopic Manual
Switch Circuit Malfunction



Tilt and telescopic manual
switch



Tilt and telescopic manual
switch circuit



Multiplex tilt and telescopic
ECU

B2610

Tilt Position Sensor or Tilt Motor
Circuit Malfunction



Harness or connector



Tilt position sensor or tilt
motor



Multiplex tilt and telescopic
ECU

B2611

Telescopic Position Sensor or
Telescopic Motor Circuit
Malfunction



Harness or connector



Telescopic position sensor or
telescopic motor



Multiplex tilt and telescopic
ECU

B2620

ECU Power Source Circuit
Malfunction



Battery



Harness or connector



Multiplex tilt and telescopic
ECU

B2621

Communication Interruption



CAN communication system



Main body ECU



Front power seat control
ECU and switch LH



Combination meter



Multiplex tilt and telescopic
ECU

2009 Toyota Tundra

2009 STEERING Steering Column - Tundra

DTC B2602: KEY UNLOCK WARNING SWITCH CIRCUIT MALFUNCTION

DESCRIPTION

A signal (ON or OFF) is sent from the main body ECU to the multiplex tilt and telescopic ECU via the CAN
communication bus when the ignition key is inserted into the key cylinder. The multiplex tilt and telescopic
ECU uses this signal to operate the auto away/return function.

DETECTION CONDITION AND TROUBLE AREA TABLE

WIRING DIAGRAM

Fig. 11: Identifying Key Unlock Warning Switch Circuit Malfunction - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

B2624

Vehicles Speed Malfunction



CAN communication system



Combination meter



Multiplex tilt and telescopic
ECU

DTC Code

Detection Condition

Trouble Area

B2602

When both conditions below are met:



Unlock warning switch signal is OFF.



Ignition switch is turned ON.



Unlock warning switch



Unlock warning switch circuit



Main body ECU



Multiplex tilt and telescopic ECU

2009 Toyota Tundra

2009 STEERING Steering Column - Tundra