Navigation System (For HDD)

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HDD): B1597, B15D6: No Response from Display
B1597 - No Response from Display
B15D6 - Display Disconnectedn

DESCRIPTION

The multi-display and display module board are connected by an AVC-LAN communication line.

The display module board and navigation computer sub-assembly 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.

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

WIRING DIAGRAM

INSPECTION PROCEDURE

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

PROCEDURE

1. CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

(a) Check for optional components.

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

Result:

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

B -- CHECK DTC
A -- Continue to next step.

2. REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)

(a) Remove optional components (including associated wiring).

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

NEXT -- Continue to next step.

3. CHECK DTC

(a) Clear the DTCs Navigation System (For HDD).

(b) Recheck for DTCs and check if the same DTCs are output again.

Result:

B -- GO TO DTC CHART Navigation System (For HDD)

C -- END
A -- Continue to next step.

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

(a) Disconnect the H20 multi-media module wire connector.

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

Standard Resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. INSPECT DISPLAY MODULE BOARD

(a) Disconnect the H21 display module board connector.

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

Standard Resistance:

Text in Illustration

NG -- REPLACE DISPLAY MODULE BOARD Disassembly
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR

(a) Disconnect the H20 multi-media module wire connector.

(b) Disconnect the H21 display module board connector.

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

Standard Resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

7. INSPECT MULTI-MEDIA MODULE WIRE

(a) Disconnect the H20 multi-media module wire connector.

(b) Disconnect the DC1 multi-media module wire connector.

Text in Illustration

NG -- REPLACE MULTI-MEDIA MODULE WIRE Disassembly
OK -- Continue to next step.

8. REPLACE MULTI-DISPLAY

(a) Replace the multi-display Disassembly.

(b) Clear the DTCs Navigation System (For HDD).

(c) Recheck for DTCs and check if the same DTCs are output again.

OK:

No DTCs are output.

NG -- REPLACE DISPLAY MODULE BOARD

OK -- END

9. REPLACE DISPLAY MODULE BOARD

(a) Replace the display module board Disassembly.

(b) Clear the DTCs Navigation System (For HDD).

(c) Recheck for DTCs and check if the same DTCs are output again.

OK:

No DTCs are output.

NG -- REPLACE NAVIGATION COMPUTER SUB-ASSEMBLY Removal

OK -- END