Toyota Tundra. Manual — part 483

Fig. 78: Diagnostic Menu Screen Display - LAN Mon
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. If the check result is "CHEK" or "Old", touch the displayed check result to view the results

on the individual communication diagnostic screen and record them.

HINT:



If all check results are "No Err", the system judges that no DTC exists.



The sub-code (relevant device) will be indicated by its physical address.



When proceeding to view the results of another device, press the "Service" switch to
return to the original "LAN Monitor" screen. Repeat this step.

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2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 79: Diagnostic Menu Screen Display - LAN Monitor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5. DTC CLEAR/RECHECK

a. Clear DTC

1. Press the "Code CLR" switch for 3 seconds.

2. The check results are cleared.

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Fig. 80: Diagnostic Menu Screen Display - Code CLR
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Recheck DTC

1. Press the "Recheck" switch.

Fig. 81: Diagnostic Menu Screen Display - Recheck Switch
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. Confirm that all diagnostic codes are "OK" when the check results are displayed. If a code

other than "OK" is displayed, troubleshoot again.

Fig. 82: Diagnostic Menu Screen Display - Results
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3. Press the "LAN Mon" switch to change to the "LAN Monitor" screen.

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2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 83: Diagnostic Menu Screen Display - LAN Mon
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4. Confirm that all diagnostic codes are "No Err". If a code other than "No Err" is displayed,

troubleshoot again.

DIAGNOSTIC TROUBLE CODE CHART

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code.

Fig. 84: Diagnostic Menu Screen Display - No Err
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Communication function

COMMUNICATION FUNCTION

DTC Code

Detection Item

Trouble Area

01-21

ROM Error

Navigation receiver

01-22

RAM Error

Navigation receiver

01-D5

Absence of Registration Unit



Power source circuit of
component shown by sub-
code



AVC-LAN circuit between
navigation receiver and
component shown by sub-
code



Component shown by sub-

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra