AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DTC CHECK / CLEAR; 2018 - 2020 MY Sienna [11/2017

Last Modified: 04-05-2023	6.11:8.1.0	Doc ID: RM1000000018F6U
Model Year Start: 2018	Model: Sienna	Prod Date Range: [11/2017 - ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DTC CHECK / CLEAR; 2018 - 2020 MY Sienna [11/2017 - ]

DTC CHECK / CLEAR

1. CHECK DTC (CHECK USING TECHSTREAM)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Body Electrical / Navigation System / Trouble Codes.

(e) Check for DTCs, and then write them down.

(f) Check the details of the DTC(s) (See page ).

NOTICE:

The audio and visual system outputs DTCs for the following system. When DTCs other than those in Diagnostic Trouble Code Chart for the audio and visual system are output, refer to Diagnostic Trouble Code Chart for the relevant system.

2. CLEAR DTC (CLEAR USING TECHSTREAM)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Body Electrical / Navigation System / Trouble Codes.

(e) Clear the DTCs.

3. START DIAGNOSTIC MODE

HINT:

Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.
If the system cannot enter the diagnostic mode, replace the radio and display receiver assembly (See page ).
Start diagnostic mode at least 15 seconds after turning the ignition switch to ON. Otherwise, some items cannot be checked.

(a) There are 4 methods to start diagnostic mode. Start diagnostic mode by using one of them.

(b) Method 1

(1) Turn the ignition switch to ON.

(2) While pressing and holding the "AUDIO" switch, operate the light control switch: Off → Tail → Off → Tail → Off → Tail → Off.

(1) Connect the Techstream to the DLC3.

(2) Turn the ignition switch to ON.

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Navigation System / Utility / Diagnostic Mode.

(d) Method 3

(1) Turn the ignition switch to ON.

(2) Press the seek/track up panel switch 5 times and then press the seek/track down panel switch 5 times with the screen and audio turned off.

HINT:

Diagnostic mode can only be started if the above operation is completed within 15 seconds of the first press of the seek/track up panel switch.
If the operation is not completed within 15 seconds of the first press of the seek/track panel switch or fails, turn the screen and audio on and then off again before attempting to start diagnostic mode.

(e) Method 4

NOTICE:

Do not touch the multi-display except when necessary.
Since the multi-display may recognize a pinch in/out or flick operation if operated with 2 fingers, always use 1 finger to operate it in diagnostic mode.

(1) Turn the ignition switch to ON.

(2) Perform a flick operation on the multi-display screen from the left to the right 5 times and then perform a flick operation from the right to left 5 times with the screen and audio turned off as shown in the illustration.

HINT:

Diagnostic mode can only be started if the above operation is completed within 15 seconds of the first flick from the left to the right.
If the operation is not completed within 15 seconds of the first flick from the left to the right or fails, turn the screen and audio on and then off before attempting to start diagnostic mode again.
Flick operations can be recognized anywhere within the touch area of the multi-display screen.

4. FAILURE DIAGNOSIS

(a) The "Failure Diagnosis" screen will be displayed by pressing the "Failure Diagnosis" switch on the "Service Menu" screen.

5. SYSTEM CHECK

(a) The "System Check Mode" screen will be displayed by pressing the "System Check" switch on the "Failure Diagnosis" screen.

6. CHECK DTC (CHECK USING SYSTEM CHECK MODE SCREEN)

HINT:

When "NCON" is displayed for all devices connected using the AVC-LAN, or when all device names are not displayed, check if there is a short circuit in the AVC-LAN or devices connected to the AVC-LAN. Repair or replace parts as necessary (See page ).

(a) System check mode screen description

Screen Description

Display	Content
*a: Device Name List No. 1	Device Name List No. 1 displays some of the devices that make up the audio and visual system The names of the components from Device Name List No. 1 are shown in the following table
*b: Check Result	Result codes for all devices are displayed
*c: Memory Clear	Present and history DTCs and registered connected device names are cleared. Press the "Memory CLR" switch for 3 seconds.
*d: Recheck	A system check will be performed again after the memory is cleared. The "Recheck" switch will dim during a system check.
*e: Device Name List No. 2	Device Name List No. 2 displays some of the devices that make up the audio and visual system. The names of the components from Device Name List No. 2 are shown in the following table.

*a: Device Name List No. 1 Description

Name	Component	Connection Method
DCU	Radio and display receiver assembly	-
DSP-AMP	Stereo component amplifier assembly*1	AVC-LAN communication line
Rr-TV	Television display assembly*2	AVC-LAN communication line
CAMERA-M	Rear Television Camera Assembly*3	Vehicle wire harness

*1: for 10 Speakers
*2: w/ Rear Seat Entertainment System
*3: w/ Panoramic View Monitor System

*b: Check Result Description

Result	Meaning	Action
OK	The device does not respond with a DTC.	-
DETAIL	The device responds with a DTC.	Look up the DTC in "Unit Check Mode".
NCON1,2	The device was previously present, but does not respond in diagnostic mode.	Check power supply wire harness of the device.
NRES1,2	The device responds in diagnostic mode, but gives no DTC information.	Check power supply wire harness of the device.

*1: w/ Rear Seat Entertainment System
*2: for 10 Speakers

*e: Device Name List No. 2 Description

Name	Component	Connection Method
DCM	DCM (telematics transceiver)*1	Communication line for USB
AUX/VTR	No. 1 stereo junk adapter assembly	Vehicle wire harness
CAA3, 4	Rear Television Camera Assembly	Vehicle wire harness
BD-P/RR*1	Blu-ray Disc Player	HDMI line
BD-P/RR_HDMI*1	Blu-ray Disc Player	HDMI line

*1: w/ Manual (SOS) Switch
*2: w/ Rear Seat Entertainment System
*3: w/ Parking Assist Monitor System
*3: w/ Panoramic View Monitor System

(b) Unit check mode screen description

Screen Description

Display	Meaning
*a: Device name	Target device
*b: History DTC	Diagnostic memory results and stored DTCs are displayed.
*c: Current DTC	DTCs output in the service check are displayed.
*d: DTC	DTC (Diagnostic Trouble Code)
*e: Timestamp	The time and date of history DTCs are displayed. (The year is displayed in 2-digit format.)
*f: Diagnosis clear switch	Pushing this switch for 3 seconds clears the diagnostic memory data of the target device. (Both response to diagnostic system check result and the displayed data are cleared.)

HINT:

This screen is updated once per second.
A maximum of 6 DTCs can be displayed for history and present DTCs.

(1) If the check result is "DETAIL", touch the displayed check result to view the results on the "Unit Check Mode" screen and record them.

NOTICE:

A maximum of 6 DTCs can be displayed for history and present DTCs on the "Unit check mode" screen. Therefore, when 6 DTCs are displayed, troubleshoot those DTCs first and then check the "Unit check mode" screen again to see if any other DTCs are displayed.

HINT:

When all results are "OK", this means that no DTCs are output.
When proceeding to view the results of another device, press the "Back" switch to return to the "System Check Mode" screen. Repeat the step above to view the results of other devices.

(2) Check the details of the DTC(s) (See page ).

NOTICE:

7. DTC CLEAR/RECHECK (CLEAR USING SYSTEM CHECK MODE SCREEN)

(a) Clear DTCs

(1) Press the "Memory CLR" switch for 3 seconds.

(2) Confirm that the check results are cleared.

HINT:

To clear the DTCs for a specific device, clear the DTCs using the "Unit Check Mode" screen.
When clearing the DTCs using the "Unit Check Mode" screen, press the "Code CLR" switch for 3 seconds.

(b) Recheck

(1) Press the "Recheck" switch.

(2) Check that all diagnostic codes are "OK" when the check results are displayed. If a result other than "OK" is displayed, perform troubleshooting again.

HINT:

When the DTCs are cleared using the "Unit Check Mode" screen, press the "Back" switch to return to the "System Check Mode" screen and perform this operation.

8. FINISH DIAGNOSTIC MODE

(a) Turn the ignition switch off.