Toyota Tundra. Manual — part 221

The "Bluetooth" handsfree module is built into the radio receiver.

Component table

COMPONENT TABLE

3. 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

Result:

RESULT REFERENCE

B: REPLACE RADIO RECEIVER (see REMOVAL )

C: REPLACE RADIO RECEIVER (see REMOVAL )

Component

Proceed to

Radio receiver (190)

Radio receiver power source circuit (see RADIO RECEIVER POWER
SOURCE CIRCUIT )

"Bluetooth" handsfree
module (19D)

Radio receiver power source circuit (see RADIO RECEIVER POWER
SOURCE CIRCUIT )

Stereo component
amplifier (440)

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

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

A: Go to next step.

4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT SHOWN BY

SUB-CODE)

Fig. 247: AVC-LAN Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

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 radio

receiver and the component shown by the sub-code.

1. Check for an open or short in the AVC-LAN circuit between the radio receiver 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.

5. 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.

NG: REPLACE TELEVISION DISPLAY ASSEMBLY (see REMOVAL )

OK: END

BLUETOOTH HANDSFREE MODULE COMMUNICATION ERROR

INSPECTION PROCEDURE

1. IDENTIFY COMPONENT SHOWN BY SUB-CODE

a. Enter the diagnostic mode.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

Fig. 248: Service Check Mode And Detailed Information Diagnostic Mode Flow Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Press the preset switch "3" to change to "Detailed Information Mode".

c. Identify the component shown by the sub-code.

HINT:



"190 (radio receiver)" is the component shown by the subcode in the example shown in the
illustration.



For details of the DTC display, refer to "DTC CHECK / CLEAR" .

2. CHECK COMPONENT SHOWN BY SUB-CODE

a. Select the component shown by sub-code.

HINT:

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra