Lexus NX: Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)
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.
HINT:
The main body ECU (multiplex network body ECU) controls the items for the following systems that are customizable via the multi-display assembly screen:
- Power door lock control system
- Wireless door lock control system
- Lighting system (INT)
- 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. |
|
CAUTION / NOTICE / HINT
NOTICE:
-
When replacing the radio receiver assembly, always replace it with a new one.
If a radio receiver assembly which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio receiver assembly may not operate normally.
-
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
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HINT:
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.
Click here
PROCEDURE
| 1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here
OK:
CAN communication DTCs are not output.
| NG | .gif) | GO TO CAN COMMUNICATION SYSTEM |
|
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| 2. | CHECK POWER DOOR LOCK CONTROL SYSTEM |
(a) Check if the power door lock control system is malfunctioning.
Click here
HINT:
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.
| NG | | GO TO POWER DOOR LOCK CONTROL SYSTEM |
|
| 3. | CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Check if the wireless door lock control system is malfunctioning.
Click here
HINT:
Customization may not be possible depending on the malfunction in the wireless door lock control system.
OK:
No malfunctions are present in the wireless door lock control system.
| NG | | GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
|
| 4. | CHECK LIGHTING SYSTEM (INT) |
(a) Check if the lighting system (INT) is malfunctioning.
Click here
HINT:
Customization may not be possible depending on the malfunction in the lighting system (INT).
OK:
No malfunctions are present in the lighting system (INT).
| NG | | GO TO LIGHTING SYSTEM (INT) |
|
| 5. | CHECK LIGHTING SYSTEM (EXT) |
(a) Check if the lighting system (EXT) is malfunctioning.
Click here
HINT:
Customization may not be possible depending on the malfunction in the lighting system (EXT).
OK:
No malfunctions are present in the lighting system (EXT).
| NG | | GO TO LIGHTING SYSTEM (EXT) |
|
| 6. | CHECK CUSTOMIZE ITEMS |
(a) Display the "Vehicle Customization" screen.
(b) Make a note of the customizable items for each main body ECU (multiplex network body ECU) related system.
HINT:
These items shown as customizable via the navigation system vehicle customization screen can also be changed using the Techstream. In a following step, the Techstream will be used.
(1) To match-up the items in the multi-display assembly with the items on the Techstream, check the customize parameters list for the power door lock control system related items that can be customized via the multi-display assembly screen.
Click here
(2) To match-up the items in the multi-display assembly with the items on the Techstream, check the customize parameters list for the wireless door lock control system related items that can be customized via the multi-display assembly screen.
Click here
(3) To match-up the items in the multi-display assembly with the items on the Techstream, check the customize parameters list for the lighting system (INT) related items that can be customized via the multi-display assembly screen.
Click here
(4) To match-up the items in the multi-display assembly with the items on the Techstream, check the customize parameters list for the lighting system (EXT) related items that can be customized via the multi-display assembly screen.
-
for Triple Beam Headlight:
Click here
-
for Single Beam Headlight:
Click here
(c) Using the Techstream, confirm that it is possible to change the settings of the customize parameters that are available for customization via the multi-display assembly screen.
OK:
The items available for customization via the multi-display assembly screen can be customized successfully using the Techstream.
| OK | | REPLACE RADIO RECEIVER ASSEMBLY |
| NG | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
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Parts Location
PARTS LOCATION ILLUSTRATION *1 NO. 1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - AM2 FUSE *2 NO. 2 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - ECU-B NO.1 FUSE ILLUSTRATION *1 WIRELESS DOOR LOCK BUZZER *2 DOOR CONTROL RECEIVER *3 FRONT DOOR OUTSIDE HAN
