Toyota Sequoia (2005). Manual - part 545

–

DIAGNOSTICS

AUDIO SYSTEM

DI–1975

2169

(d)

Service Check Mode Result Display (for checking the current and the past system conditions).
(1)

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

I28309

The illustration shows the case that the system has 2 devices with codes 190 and 360, and the device (code
360) has a trouble.
The check result is displayed in ascending order of device code. The device code is displayed first, and then
the check result.

P–––indicates physical address
190–––physical address

good–––”The component is normal”.

P–––indicates physical address
360–––physical address

CHEC–––”Check needed”.

: TUNE/TRACK UP

: TUNE/TRACK DOWN

DI–1976

–

DIAGNOSTICS

AUDIO SYSTEM

2170

(2)

Check Result Display.

Display

Original Language

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 regis-

tered, but the component gives no response to the ”Diagnos-

tic Mode ON Request”.

Check the power source cir-

cuit and the communication

circuit of the component indi-

cated 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 informa-

tion mode to check the

trouble area referring to 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 informa-

tion mode to check the

trouble area referring to the

DTC list.

OLD

Old version

Old DTC application is identified and DTC is detected in ei-

ther ”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 cir-

cuit and the communication

circuit of the component indi-

cated by the component

code (physical address).

(3)

To perform the Service Check again, press the preset switch ”1”.

(e)

Detailed Information Mode (when displaying the DTC for a trouble component)
(1)

With ”CHEC” or ”ECHN” being displayed, press the preset switch ”2” to go to the detailed informa-
tion mode.

(2)

Press the ”SEEK TRACK” switch to display the ”System Check Result (SYS)” and ”Diagnostic
Memory Response (CODE)”.

I28310

Service Check Mode

Detailed Information Mode

DISC/CH/PROG DOWN

Detailed information
of the first code
is displayed

Detailed information
of the second code
is displayed

Continue to display detailed information
when more than one DTC is detected.

The illustration shows the case that the component with code 190 has DTC ”47”  and ”dC” as a result of the
system check and the diagnosis memory response.
The detailed information mode shows the system check result first, then the diagnosis memory response result.
(*1): As for DTC that does not have any sub code, sub code is not displayed.

P–––indicates physical address
190–––physical address

SYS–––system check result

P–––indicates physical address
360–––sub code

6F–––connection
           check number

1–––the first code
62–––logical address

DC–––DTC

CODE–––diagnosis memory
               response result

2–––the second code

01–––logical address

05–––the number of times of
       occurrence
         (in decimal)

47–––DTC

Continue to display detailed information
when more than one DTC is detected.

*

From *

To *

(*1)

: TUNE/TRACK UP

: TUNE/TRACK DOWN

DISC/CH/PROG UP

–

DIAGNOSTICS

AUDIO SYSTEM

DI–1977

2171

DI–1978

–

DIAGNOSTICS

AUDIO SYSTEM

2172

(3)

Displayed Items in Detailed Information Mode

Division Code for

DTC display

Meaning

The order of detailed information displayed when the ”TUNE

UP” switch is pressed. (The order is reversed when the

”TUNE DOWN” switch is pressed.)

SYS

System check result is displayed.

Logical address 

→

DTC

CODE

Diagnostic memory check result is displayed.

Logical address

→

DTC

→

Sub code

→

Connection confirmation number

→

The number of times of occurrence

(4)

Check the trouble area referring to the DTC list.

(5)

To return to the service check mode, press the preset switch ”3”.

2.

DTC CLEAR

(a)

Clearing Individual DTC Memory (when clearing the memory of the DTC detected in the past individual-
ly)
Press the preset switch ”5” for 2 seconds or more while the ”ECHN” is displayed in the service check
mode or during the detailed information mode.

HINT:



Beep sound is emitted once when the DTC memory is completely cleared.



When the DTC memory is cleared, only the component code (physical address) is displayed for the
target component.



To check DTCs, press the preset switch ”1” and perform the service check again.

(b)

Clearance of all the DTC memory (when clearing all the memory of the DTCs detected in the past)
(1)

Start the diagnostic mode after repairing the trouble area.

(2)

Press the preset switch ”5” for 2 seconds or more (”CLR” is displayed at this time).

HINT:



Beep sound is emitted once when the DTC memory is completely cleared.



When the DTC memory for all the component is cleared, only the component codes (physical address)
are displayed.
(3)

Press the preset switch ”1” to perform the service check again, and check that no DTCs are dis-
played for all the component codes (physical address).

(c)

Finishing Diagnostic Mode.
Press the ”DISC” for 2 seconds or more, or turn the ignition switch off.