Toyota Tundra. Manual — part 222

The "Bluetooth" handsfree module is built into the radio receiver. If there is a problem between the
"Bluetooth" handsfree module and radio receiver, replace the radio receiver.

Component table:

COMPONENT TABLE

A: REPLACE RADIO RECEIVER (see REMOVAL )

B: REPLACE RADIO RECEIVER (see REMOVAL )

C: Go to next step.

3. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE

a. Inspect the power source circuit of the component shown by the sub-code.

If the power source circuit is operating normally, proceed to the next step.

Component table:

COMPONENT TABLE

4. INSPECT RADIO RECEIVER

a. Disconnect the K4 and K22* receiver connectors.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Component

Proceed to

Radio Receiver (190) (for Column Shift Type)

A

Radio Receiver (190) (for Floor Shift Type)

B

Except Radio Receiver

C

Component

Proceed to

Stereo component
amplifier (440)

Stereo component amplifier power source circuit (see STEREO
COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )

Television display
(1B0)*

Television display assembly power source circuit (see TELEVISION
DISPLAY POWER SOURCE CIRCUIT )

HINT:
*: w/ Rear Seat Entertainment System

Tester Connection

Condition Specified Condition

K4-5 (ATX+) - K4-15 (ATX-)

Always

60 to 80 ohms

K22-9 (TXM+) - K22-10 (TXM-)* Always

60 to 80 ohms

HINT:

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

Result:

RESULT REFERENCE

B: REPLACE RADIO RECEIVER (see REMOVAL )

C: REPLACE RADIO RECEIVER (see REMOVAL )

Fig. 249: Identifying K4 And K22 Connectors Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

A: Go to next step.

5. CHECK HARNESS AND CONNECTOR ("BLUETOOTH" HANDSFREE MODULE

COMPONENT SHOWN BY SUB-CODE)

*: w/ Rear Seat Entertainment System

Result

Proceed to

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

Fig. 250: AVC-LAN Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

HINT:



Start the check from the circuit that is near the component shown by the sub-code first.



For details of the connectors, refer to the "TERMINALS OF ECU" .

a. Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the

"Bluetooth" handsfree module and the component shown by the sub-code.

1. Disconnect all connectors between the "Bluetooth" handsfree module and the component

shown by the sub-code.

2. Check for an open or short in the AVC-LAN circuit between the "Bluetooth" handsfree

module and the component shown by the sub-code.

OK: There is no open or short circuit.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.

6. REPLACE COMPONENT SHOWN BY SUB-CODE

a. Replace the component shown by the sub-code with a normal one and check if the same problem

occurs again.

OK: Same problem does not occur.

Result:

RESULT REFERENCE

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

B: REPLACE RADIO RECEIVER (BUILT-IN "BLUETOOTH" HANDSFREE MODULE) (see
REMOVAL )

C: REPLACE RADIO RECEIVER (BUILT-IN "BLUETOOTH HANDSFREE MODULE") (see
REMOVAL )

A: END

RADIO RECEIVER POWER SOURCE CIRCUIT

DESCRIPTION

This circuit provides power to the radio receiver.

WIRING DIAGRAM

Result

Proceed to

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra