Dtc B157D Dab Tuner Antenna Disconnected


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK OPTIONAL COMPONENTS

INSPECT WINDSHIELD GLASS ANTENNA WIRE

CHECK NAVIGATION RECEIVER ASSEMBLY

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - NO. 2 ANTENNA CORD SUB-ASSEMBLY)

CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

CHECK DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY LH

CHECK DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY RH

DTC B157D DAB Tuner Antenna Disconnected


DESCRIPTION

This DTC is stored when a malfunction occurs in the digital audio broadcasting antenna assembly which is connected to the navigation receiver assembly.

DTC Code
DTC Detection Condition
Trouble Area
B157D
The digital audio broadcasting antenna assembly is not connected
  1. Digital audio broadcasting antenna assembly
  2. No. 2 antenna cord sub-assembly
  3. Navigation receiver assembly
  4. Harness or connector

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Navigation Multi Info Display.Navigation System (For Radio And Display Type). Dtc B157D Dab Tuner Antenna Disconnected


INSPECTION PROCEDURE

HINT:
When replacing the navigation 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 RM0000011BU0W7X.html).

  1. Check for DTCs (LandCruiser RM0000011BU0W7X.html).

    OK:
    No DTCs are output.


NG
Go to step 2
OK

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

2.CHECK OPTIONAL COMPONENTS

  1. Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.

    OK:
    Optional components are installed.
    NOTICE:
    Do not remove optional components without permission of the customer.


NG
Go to step 3
OK

REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

3.INSPECT WINDSHIELD GLASS ANTENNA WIRE

  1. Inspect the windshield glass antenna wire (LandCruiser RM000000VLW035X_01_0001.html).



NG
REPAIR WINDSHIELD GLASS ANTENNA WIRE (LandCruiser RM000000VLW035X_01_0002.html)
OK


4.CHECK NAVIGATION RECEIVER ASSEMBLY

  1. Remove the antenna connector from the navigation receiver assembly.

  1. Turn the engine switch on (ACC) with the navigation receiver assembly connector connected.

  1. Turn on the radio and turn into AM mode.

  1. Place a screwdriver, thin wire or other metal object on the navigation receiver assembly antenna jack and check that noise can be heard from the speakers.

    OK:
    Noise occurs.


NG
REPLACE NAVIGATION RECEIVER ASSEMBLY (LandCruiser RM000003B6H02GX.html)
OK


5.CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - NO. 2 ANTENNA CORD SUB-ASSEMBLY)

  1. Disconnect the DB navigation receiver assembly connector.

  1. Disconnect the antenna connector from the No.2 antenna cord sub-assembly.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 1
    		Always
    		Below 1 Ω
    1-a - 1-a
    		Always
    		Below 1 Ω
    1 - Body ground
    		Always
    		10 kΩ or higher
    1-a - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Navigation Multi Info Display.Navigation System (For Radio And Display Type). Dtc B157D Dab Tuner Antenna Disconnected

  1. Disconnect the antenna connector from the navigation receiver assembly.

  1. Disconnect the antenna connector from the digital audio broadcasting antenna assembly LH.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 1
    		Always
    		Below 1 Ω
    1-a - 1-a
    		Always
    		Below 1 Ω
    1 - Body ground
    		Always
    		10 kΩ or higher
    1-a - Body ground
    		Always
    		10 kΩ or higher
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Digital Audio Broadcasting Antenna Assembly LH)
    *b
    		Front view of wire harness connector
    (to Vehicle Wire Harness)


NG
REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY (LandCruiser RM000003AWL033X.html)
OK


7.CHECK DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY LH

  1. Replace the digital audio broadcasting antenna assembly LH with a known good one (LandCruiser RM000005M2I002X.html).

  1. Clear the DTCs (LandCruiser RM0000011BU0W7X.html).

  1. Check for DTCs (LandCruiser RM0000011BU0W7X.html).

    OK:
    No DTCs are output.


NG
Go to step 8
OK

END (DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY LH IS DEFECTIVE)

8.CHECK DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY RH

  1. Replace the digital audio broadcasting antenna assembly RH with a known good one (LandCruiser RM000005M2I002X.html ).

  1. Clear the DTCs (LandCruiser RM0000011BU0W7X.html).

  1. Check for DTCs (LandCruiser RM0000011BU0W7X.html).

    OK:
    No DTCs are output.


NG
REPLACE NAVIGATION RECEIVER ASSEMBLY (LandCruiser RM000003B6H02GX.html)
OK

END (DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY RH IS DEFECTIVE)