Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - NAVIGATION / MULTI INFO DISPLAY

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 CodeDTC Detection ConditionTrouble 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
  • HINT:
*: 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

Dtc B15D8 Monitor Disconnected. NAVIGATION / MULTI INFO DISPLAY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

  • NOTICE:
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CLEAR DTC

Clear the DTCs ().

NEXT
2.CHECK DTC

Recheck for DTCs and check if the same DTC is output again ().

  • OK:
  • No DTCs are output
NG
Go to step 3
OK
USE SIMULATION METHOD TO CHECK ()
3.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)
Dtc B15D8 Monitor Disconnected. NAVIGATION / MULTI INFO DISPLAY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the parking assist ECU connector.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    F75-4 (GND1) - Body groundAlwaysBelow 1 Ω

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

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    F75-1 (+B) - F75-4 (GND1)Always11 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
*aFront view of wire harness connector
(to Parking Assist ECU)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
4.INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY
Dtc B15D8 Monitor Disconnected. NAVIGATION / MULTI INFO DISPLAY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Remove the multi-media module receiver assembly ().

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    7 (TX1+) - 8 (TX1-)Always60 to 80 Ω
NG
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY ()
OK
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 ConnectionConditionSpecified Condition
    F77-7 (TX1+) - F75-11 (TX+)AlwaysBelow 1 Ω
    F77-8 (TX1-) - F75-10 (TX-)AlwaysBelow 1 Ω
    F77-7 (TX1+) - Body groundAlways10 kΩ or higher
    F77-8 (TX1-) - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
6.REPLACE PARKING ASSIST ECU

Replace the parking assist ECU with a new or normally functioning one ().

NEXT
7.CLEAR DTC

Clear the DTCs ().

NEXT
8.CHECK DTC

Recheck for DTCs and check if the same DTC is output again ().

NG
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY ()
OK
END (PARKING ASSIST ECU IS DEFECTIVE)
NAVIGATION / MULTI INFO DISPLAY
Land Cruiser URJ200 URJ202 GRJ200 VDJ200
NAVIGATION SYSTEM