Toyota Tundra. Manual — part 185

a. Reference:

In the system check mode, the system check and the diagnostic memory check are performed, and
the check results are displayed in ascending order of the component codes (physical address).

TERMS REFERENCE

b. Service check result display

SERVICE CHECK RESULT DISPLAY REFERENCE

c. Device name and physical address

DEVICE NAME AND PHYSICAL ADDRESS REFERENCE

Terms

Meaning

Component code

(Physical address)

Three-digit code (in hexadecimal) given to each device comprising AVC-
LAN. Corresponding to its function, individual symbol is provided.

Logical address

Two-digit code (in hexadecimal) given to each function of each device
comprising AVC-LAN.

Display

Original

word

Meaning

Action to be taken

good

Good

(normal)

No DTCs are detected in both "System
Check Mode" and "Diagnostic
Memory Mode".

-

nCon

No

connection

The system recognized the component
when it was registered, but the
component gives no response to the
"Diagnostic Mode ON Request".

Check the power source circuit and
the communication circuit of the
component indicated by the
component code (physical address).

ECHn

Exchange

One or more DTCs for "Exchange" are
detected in either "System Check
Mode" or "Diagnostic Memory Mode".

Go to the detailed information mode
to check the trouble area on the DTC
list.

CHEC

Check

When no DTCs are detected for
"Exchange", one or more DTCs for
"Check" are detected in either "System
Check Mode" or "Diagnostic Memory
Mode".

Go to the detailed information mode
to check the trouble area on the DTC
list.

OLd Old version

Old DTC application is identified and
DTC is detected in either "System
Check Mode" or "Diagnostic Memory
Mode".

-

nrES

No

response

The device gives no response to any
one of "System Check Mode ON
Request", "System Check Result
Request", and "Diagnostic Memory
Request".

Check the power source circuit and
the communication circuit of the
component indicated by the
component code (physical address).

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

d. Service check mode

1. Press the "SEEK TRACK" switch to see the check result of each component.

2. The component code (physical address) is displayed first, and then the check result follows.

HINT:



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



If the preset switch "1" is pressed in the service check mode, service check is
performed again.



This illustration is only an example and may differ in cases such as for each option part
and output DTCs.

Physical address No.

Name

190

Radio receiver

440*1

Stereo component amplifier

19D*1

"Bluetooth" handsfree module

1B0*1,*2

Television display assembly

HINT:



*1: for Separate Type Amplifier System



*2: w/ Rear Seat Entertainment System

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

Fig. 146: Service Check Mode Flow Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

e. Detailed information mode 1

HINT:



"Detailed Information Mode 1" is displayed when there is no response to "System Check
Result Request" and DTC is detected only in "Diagnostic Memory Request".



The component device code (physical address) is displayed first, and then the check result
follows.



This illustration is only an example and may differ in cases such as for each option part and
output DTCs.

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2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra

1. Press the preset switch "2" to go to the d"Detailed Information Mode 1".

2. Press the "SEEK TRACK" switch to display the physical address and DTC of the

component.

3. Press the preset switch "3" to go to the 4"Service Check Mode".

4. It is necessary to distinguish between the displays of the responses to "System Check Result

Request" and "Diagnostic Memory Request". In order to distinguish between the information
detected in "System Check Mode" and "Diagnostic Memory Mode" in "ECHn", "CHEC",
and "OLd" in "Detailed Information Mode 1", refer to the following:



"SyS" is displayed before the detailed codes (detected as a result of "System Check
Result Request") are displayed.



"COdE" is displayed before the detailed codes (detected as a result of "Diagnostic
Memory Request") are displayed.

HINT:



The response to "System Check Result Request" is the current information given from
each ECU as a result of the system check.



The response to "Diagnostic Memory Request" contains the information received from
each ECU or stored in each ECU in the past.



The response to "Diagnostic Memory Request" is the output DTCs as a result of the
diagnostic memory check or the DTCs received from each ECU.



"System Check Result Request (SyS)" is displayed first, and then the logical address
and DTC appear in order.



"Diagnostic Memory Request (COdE)" is displayed first, and then the logical address,
DTC, sub-code, connection check number, and the number of occurrences appear in
order.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra