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Description: DTC B15D6 Display Disconnected

This document provides troubleshooting steps for a 2014-2016 Toyota IS model that is displaying a B15D6 diagnostic trouble code for a disconnected display. The multi-display assembly and radio receiver assembly are connected via an AVC-LAN communication line. This diagnostic trouble code is set when an communication error occurs between these two components. The troubleshooting procedure involves checking for optional equipment that could cause interference, verifying connections and voltage levels, and replacing the multi-display assembly or radio receiver assembly if needed.

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Jack Cardiag
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0% found this document useful (0 votes)
449 views

Description: DTC B15D6 Display Disconnected

This document provides troubleshooting steps for a 2014-2016 Toyota IS model that is displaying a B15D6 diagnostic trouble code for a disconnected display. The multi-display assembly and radio receiver assembly are connected via an AVC-LAN communication line. This diagnostic trouble code is set when an communication error occurs between these two components. The troubleshooting procedure involves checking for optional equipment that could cause interference, verifying connections and voltage levels, and replacing the multi-display assembly or radio receiver assembly if needed.

Uploaded by

Jack Cardiag
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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3/6/2017 AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15D6; Display Disconnected; 2014 ­ 2016 MY IS200T IS250 IS300 IS350 [04/2013 ­        ]

Last Modified: 03­03­2017 6.7:8.0.40 Doc ID: RM1000000005VQ3


Model Year Start: 2014 Model: IS200T Prod Date Range: [04/2013 ­           ]

Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15D6; Display Disconnected; 2014 ­ 2016 MY IS200T IS250
IS300 IS350 [04/2013 ­        ]

DTC B15D6 Display Disconnected

DESCRIPTION
The multi­display assembly and radio receiver assembly are connected by the AVC­LAN communication line.

This DTC is stored when an AVC­LAN communication error occurs between the multi­display assembly and radio
receiver assembly.

DTC DETECTION DTC DETECTION CONDITION TROUBLE AREA


NO. ITEM

Multi­display assembly power
source circuit
AVC­LAN circuit between radio
Display A device that is listed in the AVC­LAN connected receiver assembly and multi­
B15D6
Disconnected device record of the master unit is missing display assembly
Multi­display assembly
Radio receiver assembly
Harness or connector

HINT:
The radio receiver assembly is the master unit.

WIRING DIAGRAM

https://techinfo.toyota.com/t3Portal/resources/jsp/siviewer/index.jsp?dir=rm/RM30G0U&locale=en&User=false&publicationNumber=RM30G0U&objType=toc/… 1/5
3/6/2017 AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15D6; Display Disconnected; 2014 ­ 2016 MY IS200T IS250 IS300 IS350 [04/2013 ­        ]

CAUTION / NOTICE / HINT
NOTICE:
After replacing the radio receiver assembly of vehicles subscribed to pay­type satellite radio broadcasts, XM radio
ID registration is necessary (w/ SDARS System).
Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1. CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

(a) Check for optional components.

(1) Check that optional components (including associated wiring) which generate radio waves are not
installed.

RESULT PROCEED TO

Optional components (including associated wiring) are installed. A

Optional components (including associated wiring) are not installed. B

HINT:

https://techinfo.toyota.com/t3Portal/resources/jsp/siviewer/index.jsp?dir=rm/RM30G0U&locale=en&User=false&publicationNumber=RM30G0U&objType=toc/… 2/5
3/6/2017 AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15D6; Display Disconnected; 2014 ­ 2016 MY IS200T IS250 IS300 IS350 [04/2013 ­        ]

Electrical noise from radio waves generated by optional components or the wiring for those components may
affect AVC­LAN communication.
This DTC may be stored when an AVC­LAN communication error occurs due to electrical noise.

B GO TO STEP 3

2. REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

(a) Remove optional components (including associated wiring).

NOTICE:
Do not remove optional components or associated wiring without the permission of the customer.

NEXT

3. CHECK DTC

(a) Clear the DTCs.

Click here 

Body Electrical > Navigation System > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK:
No DTCs are output.

OK END

NG

4. CHECK HARNESS AND CONNECTOR (MULTI­DISPLAY ASSEMBLY POWER SOURCE)

(a) Disconnect the K61 multi­display assembly connector.

(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

https://techinfo.toyota.com/t3Portal/resources/jsp/siviewer/index.jsp?dir=rm/RM30G0U&locale=en&User=false&publicationNumber=RM30G0U&objType=toc/… 3/5
3/6/2017 AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15D6; Display Disconnected; 2014 ­ 2016 MY IS200T IS250 IS300 IS350 [04/2013 ­        ]

TESTER CONNECTION CONDITION SPECIFIED CONDITION

K61­13 (GND1) ­ Body ground Always Below 1 Ω

(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:

TESTER CONNECTION CONDITION SPECIFIED CONDITION

K61­12 (B) ­ K61­13 (GND1) Always 11 to 14 V

K61­24 (ACC) ­ K61­13 (GND1) Engine switch on (ACC) 11 to 14 V

NG REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY ­ MULTI­DISPLAY
5.
ASSEMBLY)

(a) Disconnect the K74 radio receiver assembly connector.

(b) Disconnect the K61 multi­display assembly connector.

(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

TESTER CONNECTION CONDITION SPECIFIED CONDITION

K74­11 (TX4+) ­ K61­7 (TX+) Always Below 1 Ω

K74­12 (TX4­) ­ K61­19 (TX­) Always Below 1 Ω

K74­11 (TX4+) ­ Body ground Always 10 kΩ or higher

K74­12 (TX4­) ­ Body ground Always 10 kΩ or higher

NG REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

6. REPLACE MULTI­DISPLAY ASSEMBLY

(a) Replace the multi­display assembly.

https://techinfo.toyota.com/t3Portal/resources/jsp/siviewer/index.jsp?dir=rm/RM30G0U&locale=en&User=false&publicationNumber=RM30G0U&objType=toc/… 4/5
3/6/2017 AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15D6; Display Disconnected; 2014 ­ 2016 MY IS200T IS250 IS300 IS350 [04/2013 ­        ]

Click here 

(b) Clear the DTCs.

Click here 

Body Electrical > Navigation System > Clear DTCs

(c) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK:
No DTCs are output.

OK END

NG REPLACE RADIO RECEIVER ASSEMBLY

https://techinfo.toyota.com/t3Portal/resources/jsp/siviewer/index.jsp?dir=rm/RM30G0U&locale=en&User=false&publicationNumber=RM30G0U&objType=toc/… 5/5

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