Toyota Tundra. Manual — part 545

COMPONENT CHART

Fig. 307: Diagnostic Menu Screen Display - LAN Monitor Mode
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - COMPONENT WHICH

Display

Component

AVN

Navigation receiver

DSP-AMP

Stereo component amplifier

Rr-TV*

Television display

HINT:



"DSP-AMP" is the component which has stored this code in the example shown in the
illustration.



*: w/ Rear Seat Entertainment System

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

HAS STORED THIS CODE)

HINT:

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

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

navigation receiver and the component which has stored this code.

1. Disconnect all connectors between the navigation receiver and the component which has

stored this code.

2. Check for an open or short in the AVC-LAN circuit between the navigation receiver and the

component which has stored this code.

OK: There is no open or short circuit.

Fig. 308: AVC-LAN Wiring Diagram (W/O Rear Seat Entertainment System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 309: AVC-LAN Wiring Diagram (W/O Rear Seat Entertainment System)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

5. REPLACE NAVIGATION RECEIVER

a. Replace the navigation receiver (for Column Shift Type) with a normal one (see REMOVAL ).

b. Replace the navigation receiver (for Floor Shift Type) with a normal one (see REMOVAL ).

c. Check if the same problem occurs again.

OK: Same problem does not occur.

NG: REPLACE COMPONENT WHICH HAS STORED THIS CODE

OK: END

DTC 01-DF MASTER ERROR

DESCRIPTION

DTC TROUBLE DETECTION CONDITION CHART

DTC

Code

DTC Detection Condition

Trouble Area

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

INSPECTION PROCEDURE

1. CHECK NAVIGATION RECEIVER POWER SOURCE CIRCUIT

a. Refer to the NAVIGATION RECEIVER POWER SOURCE CIRCUIT .

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

2. INSPECT NAVIGATION RECEIVER

a. Disconnect the K18 and K8 receiver connectors.

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

Standard resistance

NAVIGATION RECEIVER TESTER CONNECTION SPECIFIED CONDITION

01-

DF*

When either condition below is met:



Device with a display fails and master is
switched to the audio device.



Communication error between sub-master
(stereo component amplifier) and master
occurs.



Navigation receiver power source
circuit



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



AVC-LAN circuit between navigation
receiver and stereo component amplifier



Navigation receiver



Component which has stored this code

HINT:
*: When 210 seconds have elapsed after disconnecting the power supply connector of the master
component with the ignition switch ON or ACC, 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 navigation 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

K18-5(ATX+) - K18-15 (ATX-)

Always

60 to 80 ohms

K8-9(TXM+) - K8-10 (TXM-)*

HINT:
*: w/ Rear Seat Entertainment System

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra