Lexus NX: Display Disconnected (B15D6)
DESCRIPTION
The multi-display assembly and radio receiver assembly are connected by the AVC-LAN communication line.
This DTC is stored when an AVC-LAN communication error occurs between the multi-display assembly and radio receiver assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B15D6 | Display Disconnected | A device that is listed in the AVC-LAN connected device record of the master unit is missing |
|
HINT:
For the AVC-LAN communication line, the radio receiver assembly is the master unit.
WIRING DIAGRAM
.png)
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
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.
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 .gif)
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:
- Electrical noise from radio waves generated by optional components or the wiring for those components may affect AVC-LAN communication.
- This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.
| B | .gif) | GO TO STEP 4 |
|
.gif)
| 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.
|
| 3. | CHECK DTC |
(a) Clear the DTCs.
Click here
(b) Recheck for DTCs and check that no DTCs are output.
Click here
OK:
No DTCs are output.
| OK | | END (COMMUNICATION MALFUNCTION DUE TO NOISE) |
|
| 4. | CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY ASSEMBLY - BATTERY AND BODY GROUND) |
| (a) Disconnect the multi-display assembly connector. |
|
.png)
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I42-13 (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 |
|---|---|---|
| I42-12 (B) - Body ground | Power switch off | 11 to 14 V |
| I42-24 (ACC) - Body ground | Power switch on (ACC) | 11 to 14 V |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 5. | INSPECT RADIO RECEIVER ASSEMBLY (TX1+, TX1-) |
| (a) Remove the radio receiver assembly. Click here |
|
.png)
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 5 (TX1+) - 6 (TX1-) | Always | 60 to 80 Ω |
| NG | | REPLACE RADIO RECEIVER ASSEMBLY |
|
| 6. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MULTI-DISPLAY ASSEMBLY) |
(a) Disconnect the I151 radio receiver assembly connector.
(b) Disconnect the I42 multi-display assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I151-5 (TX1+) - I42-7 (TX+) | Always | Below 1 Ω |
| I151-6 (TX1-) - I42-19 (TX-) | Always | Below 1 Ω |
| I151-5 (TX1+) - Body ground | Always | 10 kΩ or higher |
| I151-6 (TX1-) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 7. | CHECK MULTI-DISPLAY ASSEMBLY |
(a) Replace the multi-display assembly with a new or known good one.
Click here
(b) Clear the DTCs.
Click here
(c) Recheck for DTCs and check that no DTCs are output.
Click here
OK:
No DTCs are output.
| OK | | END (MULTI-DISPLAY ASSEMBLY IS DEFECTIVE) |
| NG | | REPLACE RADIO RECEIVER ASSEMBLY |
READ NEXT:
Telematics Transceiver Disconnected (B15DB)
DESCRIPTION If the radio receiver assembly cannot detect the DCM (telematics transceiver) for a certain period of time (90 seconds) after the power switch is turned on (IG) and the radio receiver asse
Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction (B15F5)
DESCRIPTION This DTC is stored when items controlled by the air conditioning amplifier assembly cannot be customized via the navigation system vehicle customization screen. HINT: The air conditioning
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
SEE MORE:
Installation
INSTALLATION CAUTION / NOTICE / HINT HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Click here PROCEDURE 1. INSTALL FUEL INJECTOR ASSEMBLY HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Click here (a) Apply a light coat of
Installation
INSTALLATION PROCEDURE 1. INSTALL BRAKE PEDAL PAD (a) Install the brake pedal pad to the brake pedal support assembly. 2. INSTALL BRAKE PEDAL STROKE SENSOR ASSEMBLY Click here 3. INSTALL BRAKE PEDAL SUPPORT ASSEMBLY (a) Install the brake pedal support assembly with the 4 nuts. Torque: 12.7 N·m {
