Toyota Tundra. Manual — part 144

INSPECTION PROCEDURE

1. CHECK "RADIO RECEIVER COMMUNICATION ERROR" IN FLOW CHART

a. Refer to the RADIO RECEIVER COMMUNICATION ERROR .

NEXT: END

DTC 01-D6 NO MASTER; DTC 01-D7 CONNECTION CHECK ERROR

DESCRIPTION

DTC TROUBLE DETECTION CONDITION



*1: Even if no fault is present, this trouble code may be stored depending on the battery condition
or engine start voltage.



*2: If the power connector is disconnected after the engine starts, this code is stored after 180
seconds.



*3: If the device is reported as not existing during verification, check the power source circuit and
AVC-LAN circuit for the device.



*4: This code may be stored if the engine is started and the ignition switch is turned to the START
position again.

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.

DTC

No.

DTC Detection Condition

Trouble Area

01-

D6*1

When either of the following conditions is met:



The device that stores (stored) the code has
(had) been disconnected when the ignition
switch is in the ACC or ON position.



The master device has (had) been disconnected
when this code is stored.



Radio receiver power source circuit



Power source circuit of the
component which has stored this
code



AVC-LAN circuit between the radio
receiver and the component which
has stored this code



Component which has stored this
code

01-

D7*2

When either of the following conditions is met:



The device that stored the code has (had) been
disconnected after the engine starts (started).

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

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. IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

a. Enter the diagnostic mode.



The master device has (had) been disconnected
when this code is (was) stored.



Radio receiver

HINT:



*1: Even if no fault is present, this trouble code may be stored depending on the battery condition
or engine start voltage.



*2: When 210 seconds have elapsed after disconnecting the power supply connector of the master
component with the ignition switch in the ACC or ON position, this code is stored.

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.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

Fig. 27: Service Check Mode And Detailed Information Mode Flow Diagram
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

HINT:



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

Component

Physical address

Stereo component amplifier

440

"Bluetooth" handsfree module

19D

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2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra



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

3. 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

4. CHECK POWER SOURCE CIRCUIT OF COMPONENT WHICH HAS STORED THIS CODE

a. Inspect the power source circuit of the component which has stored this code.

Component table:

COMPONENT TABLE

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

5. INSPECT RADIO RECEIVER

a. Disconnect the K4 receiver connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Component

Proceed to

"Bluetooth" handsfree module (for Column Shift Type)

A

"Bluetooth" handsfree module (for Floor Shift Type)

B

Except "Bluetooth" handsfree module

C

Component

Proceed to

Stereo component
amplifier

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

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra