Toyota Tundra. Manual — part 262

STEERING PAD SWITCH

COMPONENTS

Fig. 448: Identifying Steering Pad Switch Components
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTE:

Some systems need to be initialized after the cable is reconnected (see
INITIALIZATION ).

CAUTION: Wait at least 90 seconds after disconnecting the cable from the

negative (-) battery terminal to prevent airbag and seat belt
pretensioner activation.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

2. REMOVE LOWER NO. 2 STEERING WHEEL COVER (See REMOVAL )

3. REMOVE LOWER NO. 3 STEERING WHEEL COVER (See REMOVAL )

4. REMOVE STEERING PAD (See REMOVAL )

5. REMOVE STEERING PAD SWITCH ASSEMBLY

a. Disconnect the connector.

b. Remove the 2 screws.

c. Detach the 4 pins and remove the steering pad switch.

Fig. 449: Identifying Steering Pad Switch Pins
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION

1. INSPECT STEERING PAD SWITCH ASSEMBLY

NOTE:



Some systems need to be initialized after the cable is reconnected
(see INITIALIZATION ).



After the ignition switch is turned OFF, the navigation system
requires approximately 90 seconds to record various types of
memory and settings. As a result, after turning the ignition switch
OFF, wait 90 seconds or more before disconnecting the cable from
the negative (-) battery terminal.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

Fig. 450: Identifying Steering Pad Switch Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

If the result is not as specified, replace the steering pad switch assembly.

INSTALLATION

1. INSTALL STEERING PAD SWITCH ASSEMBLY

a. Attach the 4 pins to install the switch with the 2 screws.

b. Connect the connector.

2. INSTALL LOWER NO. 3 STEERING WHEEL COVER (See INSTALLATION )

3. INSTALL LOWER NO. 2 STEERING WHEEL COVER (See INSTALLATION )

Tester Connection

Switch Condition

Specified Condition

9 (AU2) - 8 (EAU)

No switch is pushed

100 kohms or higher

MODE switch pushed

Below 1 ohms

On Hook switch pushed

329 ohms

Off Hook switch pushed

1000 ohms

Voice switch is pushed

3110 ohms

10 (AU1)-8(EAU)

No switch is pushed

100 kohms or higher

Seek* switch pushed

Below 1 ohms

Seek- switch pushed

329 ohms

Volume* switch is pushed

1000 ohms

Volume- switch Is pushed

3110 ohms

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

4. INSTALL STEERING PAD (See INSTALLATION )

Fig. 451: Identifying Steering Pad Switch Pins
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

6. INSPECT STEERING PAD (See INSTALLATION )

7. CHECK SRS WARNING LIGHT (See INSTALLATION )

MICROPHONE AMPLIFIER

COMPONENTS

NOTE:

Some systems need to be initialized after the cable is reconnected (see
INITIALIZATION ).

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra