Toyota Tundra. Manual — part 145

Result:

RESULT REFERENCE

Fig. 28: Identifying K4 Receiver Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

B: REPLACE RADIO RECEIVER (see REMOVAL )

C: REPLACE RADIO RECEIVER (see REMOVAL )

A: Go to Next Step

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

STORED THIS CODE)

HINT:

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 which has stored this code.

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

this code.

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

component which has stored this code.

OK: There is no open or short circuit.

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

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

7. REPLACE COMPONENT WHICH HAS STORED THIS CODE

a. Replace the component which has stored this code with a normal one and check if the same

problem occurs again.

OK: Same problem does not occur.

Result:

RESULT REFERENCE

B: REPLACE RADIO RECEIVER (see REMOVAL )

C: REPLACE RADIO RECEIVER (see REMOVAL )

A: END

DTC 01-DC TRANSMISSION ERROR

DESCRIPTION

DTC TROUBLE DETECTION CONDITION

Result

Proceed to

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

DTC

DTC Detection Condition

Trouble Area

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

INSPECTION PROCEDURE

1. CHECK FOR DTC OF OTHER COMPONENTS

a. Check if the component shown by the sub-code is displayed in the check result of the other

components.

1. Check if "01-DC" is output for the other components.

2. If "01-DC" is output for any other components, check if the same physical address is

displayed.

HINT:

For the list of the components shown by sub-codes, refer to the table in the next step.

Result:

RESULT REFERENCE

B: Go to step 4

A: Go to Next Step

2. CLEAR DTC

a. Clear the DTCs (see DTC CHECK / CLEAR ).

No.

01-

DC*

Transmission to component shown by
subcode failed (Detecting this DTC does
not always mean actual failure)

If the same sub-code is recorded in other components,
check harness for power supply and communication
system of all components shown by code

HINT:
*: This code may be stored if the engine is started, idled for 60 seconds and then 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.

Result

Proceed to

"01-DC is not output or the same physical address is not displayed

A

"01-DC" is output and the same physical address is displayed

B

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

HINT:

If "01-DC" is output for only one component, this may not indicate a malfunction.

3. RECHECK DTC

a. Recheck for DTCs and check if the same trouble occurs again.

OK: Malfunction disappears.

NG: Go to step 5

OK: END

4. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE

a. Enter the diagnostic mode.

Fig. 30: Service Check Mode And Detailed Information Mode Flow Chart

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra