Dtc B15D8 Monitor Disconnected
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CLEAR DTC
CHECK DTC
CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)
INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY
CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - PARKING ASSIST ECU)
REPLACE PARKING ASSIST ECU
CLEAR DTC
CHECK DTC
DTC B15D8 Monitor Disconnected
DESCRIPTION
The parking assist ECU and multi-media module receiver assembly are connected by an AVC-LAN communication line. When an AVC-LAN communication error occurs between the multi-media module receiver assembly and parking assist ECU, these DTCs will be stored.
| DTC Code | DTC Detection Condition | Trouble Area |
| B15D8* | A device that is listed in the AVC-LAN connected device record of the master unit is missing. | Parking assist ECU power source circuit
AVC-LAN circuit
Parking assist ECU
Multi-media module receiver assembly
|
*: Even if no fault is present, this DTC may be stored depending on the battery condition or engine start voltage.
The multi-media module receiver assembly is the master unit.
WIRING DIAGRAM
INSPECTION PROCEDURE
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Recheck for DTCs and check if the same DTC is output again ().
| OK | |
| |
| USE SIMULATION METHOD TO CHECK ()
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| 3.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND) |
Disconnect the parking assist ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F75-4 (GND1) - Body ground | Always | Below 1 Ω |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| F75-1 (+B) - F75-4 (GND1) | Always | 11 to 14 V |
| F75-8 (IG) - F75-4 (GND1) | Engine switch on (IG) | 11 to 14 V |
| F75-9 (ACC) - F75-4 (GND1) | Engine switch on (ACC) | 11 to 14 V |
Text in Illustration| *a | Front view of wire harness connector
(to Parking Assist ECU) |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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| 4.INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY |
Remove the multi-media module receiver assembly ().
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 7 (TX1+) - 8 (TX1-) | Always | 60 to 80 Ω |
| | REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY ()
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|
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| 5.CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - PARKING ASSIST ECU) |
Disconnect the F77 multi-media module receiver assembly connector.
Disconnect the F75 parking assist ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F77-7 (TX1+) - F75-11 (TX+) | Always | Below 1 Ω |
| F77-8 (TX1-) - F75-10 (TX-) | Always | Below 1 Ω |
| F77-7 (TX1+) - Body ground | Always | 10 kΩ or higher |
| F77-8 (TX1-) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 6.REPLACE PARKING ASSIST ECU |
Replace the parking assist ECU with a new or normally functioning one ().
Recheck for DTCs and check if the same DTC is output again ().
| | REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY ()
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| OK | |
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| END (PARKING ASSIST ECU IS DEFECTIVE) |
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