DESCRIPTION
This DTC is stored when the MOST network cannot be established after the master unit is activated.
DTC No. | DTC Detection Condition | Trouble Area |
---|---|---|
B15D0 | MOST network cannot be established. |
|
Tech Tips
For the MOST network, the multi-media module receiver assembly is the master unit.
Errors may occur in MOST communication between devices due to problems such as electrical noise.
WIRING DIAGRAM
INSPECTION PROCEDURE
Note
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
CHECK DTC
If DTC B15C3 is output, perform the troubleshooting of DTC B15C3 first.
Result | ||||||
---|---|---|---|---|---|---|
|
B |
GO TO DTC "B15C3" Click here |
A |
PERFORM MOST LINE CHECK
*a | Node position number for devices that use MOST communication |
*b | Device name |
*c | Result |
Display the "MOST Line Check" screen.
Check the result on the "MOST Line Check" screen.
Result | ||||||
---|---|---|---|---|---|---|
|
Tech Tips
When "NCON" is displayed for more than 1 item, proceed to the step for the device that has the smallest node position number.
The "MOST Line Check" screen can be displayed only when DTC B15D0 is stored.
B |
CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY) Click here |
A |
CHECK MOST COMMUNICATION CONNECTORS
Check the MOST communication line connectors.
Check if the MOST communication line connector between the multi-media module receiver assembly and stereo component amplifier assembly has any connection problems Click here.
Display the "MOST Line Check" screen and check the result Click here.
Result | ||||||
---|---|---|---|---|---|---|
|
Tech Tips
When the malfunction in the MOST network is repaired, the screen cannot be changed to the "MOST Line Check" screen.
B |
END |
A |
CHECK HARNESS AND CONNECTOR (WAKE-UP SIGNAL)
Disconnect the P49 stereo component amplifier assembly connector.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
NG |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY) Click here |
OK |
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY)
Disconnect the P49 stereo component amplifier assembly connector.
Disconnect the J139 multi-media module receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here
CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)
Disconnect the J139 multi-media module receiver assembly connector.
Disconnect the P49 stereo component amplifier assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY
Replace the stereo component amplifier assembly Click here.
Clear the DTCs Click here.
Recheck for DTCs and check that no DTCs are output.
OK |
---|
No DTCs are output. |
NG |
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here |
OK |
END