Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 202xl preche40
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05-1 192
DIAGNOSTICS - AUDIO SYSTEM
055LI-05
1 6 DISC PRE-CHECK
1. DIAGNOSIS CHECK
(a) Starting Diagnosis Mode (All elements are lighting in the
SW check mode).
(1) Turn off the audio system and turn the IG switch to
ACC. While pressing the preset switches "1" and "6"
at the same time, press "DISC" 3 times.
(2) Reference:
SEEK TRACK DOWN SEEK TRACKI33882
UP
S When the system enters the Diagnosis Mode,
a "beep" tone is emitted 3 times and all the
elements are lighting in the SW check mode.
S It takes about 40 seconds to complete the
check.
S Turn all the elements in the LCD on.
S When pressing the switch, confirm a beep
tone is emitted.
S Press the "SEEK TRACK UP" button to enter
the "Service Check Screen".
(b) Service Check Screen.
(1) Reference:
In the service check mode, the system check and
the diagnosis memory check are performed, and
the check results are displayed in ascending order
of the device codes (physical address.)
Terms Meaning
Three-digit code (In hexadecimal) given to each device
Component code
comprising AVC-LAN. Corresponding to its function, individ-
(Physical address)
ual symbol is provided.
Two-digit code (In hexadecimal) given to each function and
Logical address
device unit in each device comprising AVC-LAN.
Code No. (physical address) List
Code No.
Equipment name
(physical address)
190 Radio receiver assy (Audio head unit)
440 Stereo component amplifier
1F6, 16C Multi-display Controller Sub-assy
1F4 Stereo Component Controller Assy
(c) Finishing Diagnosis Mode.
(1) Press "DISC" for 2 seconds or more, or turn the IG
switch OFF.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1375
05-1 193
DIAGNOSTICS - AUDIO SYSTEM
(d) Service Check Mode Result Display (for checking the cur-
rent and the past system conditions).
(1) Press the "SEEK TRACK" switch to see the check
result of each device.
P---indicates physical address
190---physical address
good---"The component is normal".
P---indicates physical address
360---physical address
CHEC---"Check needed".
: SEEK TRACK UP
: SEEK TRACK DOWN
The illustration shows the case that the system has 2 devices with codes 190 and 360, and the device (code
360) requires a check.
The check result is displayed in ascending order of device code. The device code is displayed first, and then
the check result.
I34696
(2) Check Result Display.
Display Original Language Meaning Action to be taken
No DTCs are detected in both "System Check Mode" and
good Good (normal) -
"Diagnosis Memory Mode".
Check the power source cir-
The system recognized the component when it was regis- cuit and the communication
NCON No connection tered, but the component gives no response to the "Diagno- circuit of the device indi-
sis Mode ON Request". cated by the device code
(physical address).
Go to the detail information
One or more DTC for "Exchange" is detected in either "Sys- mode to check the trouble
ECHN Exchange
tem Check Mode" or "Diagnosis Memory Mode". area referring to the DTC
list.
Go to the detail information
When no DTCs are detected for "Exchange", one or more
mode to check the trouble
CHEC Check DTC for "Check is detected in either "System Check Mode"
area referring to the DTC
or "Diagnosis Memory Mode".
list.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1376
05-1 194
DIAGNOSTICS - AUDIO SYSTEM
Display Original Language Meaning Action to be taken
Old DTC application is identified and DTC is detected in ei-
OLD Old version -
ther "System Check Mode" or "Diagnosis Memory Mode".
Check the power source cir-
The device gives no response to any one of "System Check cuit and the communication
NRES No response Mode ON Request", "System Check Result Request" and circuit of the device indi-
"Diagnosis Memory Request". cated by the device code
(physical code).
(3) To perform the Service Check again, press the pre-
set switch "1".
(e) Detailed information Mode (when displaying the troubled
device's DTC)
(1) With "CHEC" or "ECHN" being displayed, press the
preset switch "2" to go to the detailed information
mode.
(2) Press the "SEEK TRACK" switch to display "System
Check Result (SYS)" and "Diagnosis Memory Re-
sponse (CODE)".
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1377
05-1 195
DIAGNOSTICS - AUDIO SYSTEM
Service Check Mode
PRESET SWITCH "3" PRESET SWITCH "2"
Detail Information Mode P---indicates physical address
*1
190---physical address
SYS---system check result
1---the first code
Detail information 62---logical address
of the first code
is displayed
47---DTC
Continue to display detailed information
when more than one DTC is detected.
CODE---diagnosis memory
response result
2---the second code
01---logical address
DC---DTC
Detail information P---indicates physical address
of the second code 360---sub code
is displayed (*2)
6F---connection
check number
05---the number of times of
occurrence
(in decimal)
Continue to display detailed information
when more than one DTC is detected.
: SEEK TRACK UP
: SEEK TRACK DOWN
From *1 To *1
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.
(*2): As for the DTCs that do not have any sub code, sub code is not displayed.
I34695
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1378
05-1 196
DIAGNOSTICS - AUDIO SYSTEM
(3) Displayed Items in Detailed Information Mode
The order of detailed information displayed when the "TUNE
Division Code for
Meaning UP" switch is pressed. (The order is reversed when the
DTC display
"TUNE DOWN" switch is pressed.)
Logical address
SYS System check result is displayed.
DTC
Logical address
DTC
CODE Diagnosis memory check result is displayed. 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 pre-
set switch "3".
(f) Clearing Individual DTC Memory (when clearing the
memory of the DTC detected in the past individually)
(1) 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:
S Beep sound is emitted once when the DTC memory is
completely cleared.
S When the DTC memory is cleared, only the component
code (physical address) is displayed for the target compo-
nent.
S To check DTCs, press the preset switch "1" and perform
the service check again.
(g) Clearance of all the DTC memory (when clearing all the
memory of the DTCs detected in the past)
(1) Start the diagnosis mode after repairing the trouble
area.
(2) Press the preset switch "5" for 2 seconds or more.
("CLR" is displayed at this time.)
HINT:
S Beep sound is emitted once when the DTCs memory is
completely cleared.
S When the DTCs memory for all the device 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 displayed
for all the component codes (physical address).
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1379
05-1 197
DIAGNOSTICS - AUDIO SYSTEM
2. IDENTIFICATION OF NOISE SOURCE
(a) Identify the condition under which the noise occurs, and
check the noise filter on the related part.
Condition in which noise occurs Noise Source
Depressing the acceleration pedal increases noise, and stopping the engine
Generator
erases the noise immediately.
Noise occurs during the A/C or the heater operation. Blower motor
Rapid acceleration while driving on the unpaved road or after the IG switch is
Fuel pump
turned ON makes noise.
Pressing and then releasing the horn switch, and keeping pressing the horn
Horn
switch makes unusual noise.
Stopping the engine erases small noise that has been heard. Ignition
Noise occurs synchronously with the turn signal flash. Flasher
Noise occurs during the window washer operation. Washer
Noise occurs during the engine running, and it continues after the engine
Engine coolant temperature sensor
stops.
Noise occurs during the wiper operation. Wiper
Noise occurs when the brake pedal is depressed. Stop light switch
Others. Static electricity stored on the vehicle
(b) Reference:
S Make sure first that there is no noise from outside.
Failing to do so makes the noise source detection
difficult and leads to misunderstanding.
S The noise should be removed in descending order
of loudness.
S Setting the radio untuned makes noise noticeable,
making the recognition of the phenomenon easier.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1380
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