Toyota Tundra. Manual — part 191

INSPECTION PROCEDURE

1. CHECK RADIO RECEIVER POWER SOURCE CIRCUIT

a. Refer to the RADIO RECEIVER POWER SOURCE CIRCUIT .

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

2. 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 )

NOTE:



Before starting troubleshooting, be sure to clear DTCs to erase codes
stored due to the reasons described in the HINT above. Then, check for
DTCs and troubleshoot according to the output DTCs.



The radio receiver is the master unit.



Be sure to clear and recheck DTCs after the inspection is completed to
confirm that no DTCs are output.

NOTE:

Be sure to read the DESCRIPTION before performing the following procedures.

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

A: Go to Next Step

3. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE

a. Enter the diagnostic mode.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

Fig. 155: 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 which has stored this code.

Component table:

COMPONENT TABLE

Component

Physical address

Stereo component amplifier

440

"Bluetooth" handsfree module

19D

Television display*

1B0

HINT:



*: w/ Rear Seat Entertainment System

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

4. CHECK COMPONENT WHICH HAS STORED THIS CODE

a. Select the component which has stored this code.

HINT:

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

5. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS

STORED THIS CODE)



"440 (stereo component amplifier)" is the component which has stored this code in the
example shown in the illustration.



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

Component

Proceed to

"Bluetooth" handsfree module (for Column Shift Type)

A

"Bluetooth" handsfree module (for Floor Shift Type)

B

Except "Bluetooth" handsfree module

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra