Dtc B15D8 Monitor Disconnected


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)

INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARKING ASSIST ECU)

CHECK PARKING ASSIST ECU

DTC B15D8 Monitor Disconnected


DESCRIPTION

The parking assist ECU and radio and display receiver assembly are connected by an AVC-LAN communication line. When an AVC-LAN communication error occurs between the radio and display 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.
  1. Parking assist ECU power source circuit
  2. AVC-LAN circuit
  3. Parking assist ECU
  4. Radio and display receiver assembly
HINT:
  1. Even if no fault is present, this DTC may be stored depending on the battery condition or engine start voltage.
  2. The radio and display receiver assembly is the master unit.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Audio Video.Audio And Visual System (For Radio Receiver Type). Dtc B15D8 Monitor Disconnected


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
When replacing the radio and display receiver assembly, it is necessary to perform the vehicle contract setting for Connected Services (w/ Connected Services Function).
1.CHECK FOR DTC

  1. Clear the DTCs (LandCruiser RM0000014CZ0EQX.html).

  1. Check for DTCs (LandCruiser RM0000014CZ0EQX.html).

    OK:
    No DTCs are output.


NG
Go to step 2
OK

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

2.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Audio Video.Audio And Visual System (For Radio Receiver Type). Dtc B15D8 Monitor Disconnected

  1. Disconnect the parking assist ECU connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    I6-4 (GND1) - Body ground
    		Always
    		Below 1 Ω

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    I6-1 (+B) - I6-4 (GND1)
    		Always
    		11 to 14 V
    I6-8 (IG) - I6-4 (GND1)
    		Ignition switch ON
    		11 to 14 V
    I6-9 (ACC) - I6-4 (GND1)
    		Ignition switch ACC
    		11 to 14 V
Text in Illustration
*a
Front view of wire harness connector
(to Parking Assist ECU)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Audio Video.Audio And Visual System (For Radio Receiver Type). Dtc B15D8 Monitor Disconnected

  1. Remove the radio and display receiver assembly (LandCruiser RM000003AHY02NX.html).

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    7 (TX3+) - 8 (TX3-)
    		Always
    		60 to 80 Ω


NG
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY (LandCruiser RM000003AHY02NX.html)
OK


4.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARKING ASSIST ECU)

  1. Disconnect the H50 radio and display receiver assembly connector.

  1. Disconnect the I6 parking assist ECU connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H50-7 (TX3+) - I6-11 (TX+)
    		Always
    		Below 1 Ω
    H50-8 (TX3-) - I6-10 (TX-)
    		Always
    		Below 1 Ω
    H50-7 (TX3+) - Body ground
    		Always
    		10 kΩ or higher
    H50-8 (TX3-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK PARKING ASSIST ECU

  1. Replace the parking assist ECU with a known good one.

    1. for LHD: LandCruiser RM00000466X026X.html
    2. for RHD: LandCruiser RM00000470500OX.html

  1. Clear the DTCs (LandCruiser RM0000014CZ0EQX.html).

  1. Check for DTCs (LandCruiser RM0000014CZ0EQX.html).

    OK:
    No DTCs are output.


NG
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY (LandCruiser RM000003AHY02NX.html)
OK

END (PARKING ASSIST ECU IS DEFECTIVE)