DTC    B1597    No Response from Display

DTC    B15D6    Display Disconnected

for Preparation Click here


DESCRIPTION

The multi-display and display module board are connected by an AVC-LAN communication line.
The display module board and display and navigation module display are connected by an AVC-LAN communication line.
When an AVC-LAN communication error occurs between the display module board and multi-display, these DTCs will be stored.

HINT:
If either B1597 or B15D6 and either B1560 or B156F are output, troubleshoot for B1560 or B156F first.


DTC No.
DTC Detection Condition
Trouble Area
B1597
No response to the diagnostic memory request from the master unit.
  1. Multi-display power source circuit
  2. AVC-LAN circuit between the display module board and multi-media module wire
  3. Multi-media module wire
  4. Multi-display
  5. Display module board
  6. Display and navigation module display
B15D6*1
A device that is listed in the AVC-LAN connected device record of the master unit is missing.

HINT:
  1. *1: Even if no fault is present, this DTC may be stored depending on the auxiliary battery condition or hybrid system start voltage.
  2. The display and navigation module display is the master unit.


WIRING DIAGRAM


E210157E02


INSPECTION PROCEDURE

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

1.CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

  1. Check for optional components.

    1. Check that optional components (including associated wiring) which generate radio waves are not installed.

      Result:
      Result
      		Proceed to
      Optional components (including associated wiring) are installed.
      		A
      Optional components (including associated wiring) are not installed.
      		B

      HINT:
      1. Electrical noise from radio waves generated by optional components or the wiring for those components may affect AVC-LAN communication.
      2. This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.



B
Go to step 3
A


2.REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

  1. Remove optional components (including associated wiring).

    NOTICE:
    Do not remove optional components or associated wiring without the permission of the customer.


NEXT


3.CHECK DTC

  1. Clear the DTCs (Click here).

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

    Result:
    Result
    		Proceed to
    B1597 or B15D6 is output.
    		A
    Either B1597 or B15D6 and either B1560 or B156F are output.
    		B
    No DTCs are output.
    		C



B
GO TO DTC CHART (Click here)

C
END
A


4.CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY POWER SOURCE)

  1. Disconnect the H20 multi-media module wire connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H20-6 (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
    H20-5 (+B) - H20-6 (GND1)
    		Power switch off
    		11 to 14 V
    H20-10 (ACC) - H20-6 (GND1)
    		Power switch on (ACC)
    		11 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT DISPLAY MODULE BOARD


    E170139E02

  1. Disconnect the H21 display module board connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H21-9 (TX4+) - H21-11 (TX5+)
    		Always
    		Below 1 Ω
    H21-10 (TX4-) - H21-12 (TX5-)
    		Always
    		Below 1 Ω

    Text in Illustration 
    *a
    		Component without harness connected
    (Display Module Board)



NG
REPLACE DISPLAY MODULE BOARD (Click here)
OK


6.CHECK HARNESS AND CONNECTOR

  1. Disconnect the H20 multi-media module wire connectors.

  1. Disconnect the H21 display module board connectors.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H20-3 (MTX+) - H21-11 (TX5+)
    		Always
    		Below 1 Ω
    H20-8 (MTX-) - H21-12 (TX5-)
    		Always
    		Below 1 Ω
    H20-3 (MTX+) - Body ground
    		Always
    		10 kΩ or higher
    H20-8 (MTX-) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


7.INSPECT MULTI-MEDIA MODULE WIRE


    E210158E04

  1. Disconnect the H20 multi-media module wire connector.



    E210164E04

  1. Disconnect the DC1 multi-media module wire connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H20-5 (+B) - DC1-12 (+B)
    		Always
    		Below 1 Ω
    H20-10 (ACC) - DC1-24 (ACC)
    		Always
    		Below 1 Ω
    H20-6 (GND1) - DC1-13 (GND1)
    		Always
    		Below 1 Ω
    H20-3 (MTX+) - DC1-7 (MTX+)
    		Always
    		Below 1 Ω
    H20-8 (MTX-) - DC1-19 (MTX-)
    		Always
    		Below 1 Ω

    Text in Illustration 
    *a
    		Component without harness connected
    (Multi-media Module Wire)



NG
REPLACE MULTI-MEDIA MODULE WIRE (Click here)
OK


8.REPLACE MULTI-DISPLAY

  1. Replace the multi-display (Click here).

  1. Clear the DTCs (Click here).

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

    OK:
    No DTCs are output.



NG
Go to step 9
OK

END 

9.REPLACE DISPLAY MODULE BOARD

  1. Replace the display module board (Click here).

  1. Clear the DTCs (Click here).

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

    OK:
    No DTCs are output.



NG
REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY (Click here)
OK

END