NAVIGATION SYSTEM(for HDD), Diagnostic DTC:B15F6

DTC Code	DTC Name
B15F6	Main Body ECU Vehicle Information Reading/Writing Process Malfunction

DESCRIPTION

This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the navigation system vehicle customization screen.

Tech Tips

The main body ECU (multiplex network body ECU) controls the items for the following systems that are customizable via the display screen:

Power door lock control system
Wireless door lock control system (w/ Entry and Start System)
Wireless door lock control system (w/o Entry and Start System)
Lighting system (EXT)

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B15F6	Main Body ECU Vehicle Information Reading/Writing Process Malfunction	Main body ECU (multiplex network body ECU) vehicle setting processing error.	CAN communication system Power door lock control system Wireless door lock control system (w/ Entry and Start System) Wireless door lock control system (w/o Entry and Start System) Lighting system (EXT) Main body ECU (multiplex network body ECU) Navigation ECU Sub-assembly

CAUTION / NOTICE / HINT

Note

When replacing the main body ECU (multiplex network body ECU), make sure to replace it with a new one.

PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

Use the GTS to check if the CAN communication system is functioning normally.

for LHD:

Click here

for RHD:

Click here

Result

Proceed to
No DTCs are output
DTCs are output

DTCs are output

GO TO CAN COMMUNICATION SYSTEM for LHD: GO TO CAN COMMUNICATION SYSTEM Click here
GO TO CAN COMMUNICATION SYSTEM for RHD: GO TO CAN COMMUNICATION SYSTEM Click here

No DTCs are output

CHECK POWER DOOR LOCK CONTROL SYSTEM

Check if the power door lock control system is malfunctioning.

Click here

Tech Tips

Customization may not be possible depending on the malfunction in the power door lock control system.

OK

No malfunctions are present in the power door lock control system.

OK
No malfunctions are present in the power door lock control system.

Proceed to the next step based on the check result.

Result

Proceed to
OK (w/ Entry and Start System)
OK (w/o Entry and Start System)
NG

OK (w/o Entry and Start System)

CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Entry and Start System) Click here

GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

OK (w/ Entry and Start System)

CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Entry and Start System)

Check if the wireless door lock control system (w/ Entry and Start System) is malfunctioning.

Click here

Tech Tips

Customization may not be possible depending on the malfunction in the wireless door lock control system (w/ Entry and Start System).

OK
No malfunctions are present in the wireless door lock control system (w/ Entry and Start System).

Result

Proceed to
OK
NG

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM Click here

CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Entry and Start System)

Check if the wireless door lock control system (w/o Entry and Start System) is malfunctioning.

Click here

Tech Tips

Customization may not be possible depending on the malfunction in the wireless door lock control system (w/o Entry and Start System).

OK

No malfunctions are present in the wireless door lock control system (w/o Entry and Start System).

OK
No malfunctions are present in the wireless door lock control system (w/o Entry and Start System).

Proceed to the next step based on the check result.

Result

Proceed to
OK
NG

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM Click here

CHECK LIGHTING SYSTEM (EXT)

Check if the lighting system (EXT) is malfunctioning.

Click here

Tech Tips

Customization may not be possible depending on the malfunction in the lighting system (EXT).

Result

Proceed to
No malfunctions are present in the lighting system (EXT)
Malfunctions are present in the lighting system (EXT)

Malfunctions are present in the lighting system (EXT)

GO TO LIGHTING SYSTEM Click here

No malfunctions are present in the lighting system (EXT)

CHECK CUSTOMIZE ITEMS

Display the "Vehicle settings" screen.
Make a note of the customizable items for each main body ECU (multiplex network body ECU) related system.

Tech Tips

These items shown as customizable via the navigation system vehicle customization screen can also be changed using the GTS. In a following step, the GTS will be used.
1. To match-up the items in the display with the items on the GTS, check the customize parameters list for the power door lock control system related items that can be customized via the display screen.
  
  Click here
2. To match-up the items in the display with the items on the GTS, check the customize parameters list for the wireless door lock control system (w/ Entry and Start System) related items that can be customized via the display screen.
  
  Click here
3. To match-up the items in the display with the items on the GTS, check the customize parameters list for the wireless door lock control system (w/o Entry and Start System) related items that can be customized via the display screen.
  
  Click here
4. To match-up the items in the display with the items on the GTS, check the customize parameters list for the lighting system (EXT) related items that can be customized via the display screen.
  
  Click here

Using the GTS, confirm that it is possible to change the settings of the customize parameters that are available for customization via the display screen.

OK
The items available for customization via the display screen can be customized successfully using the GTS.

Result

Proceed to
OK
NG

REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for LHD: REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for RHD: REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here