Navigation System (For HDD)

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HDD): B1596, B1563: No Response from Remote Touch

B1596 - No Response from Remote Touch
B1563 - Remote Touch Disconnected

DESCRIPTION

The navigation computer sub-assembly and remote touch are connected by the MOST communication line.

When a MOST communication error occurs between the navigation computer sub-assembly and remote touch, these DTCs will be stored.

HINT
For the MOST network, 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 MOST communication.
* This DTC may be stored when a MOST 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.

OK:

No DTCs are output.

NG -- CHECK HARNESS AND CONNECTOR (REMOTE TOUCH POWER SOURCE)

OK -- END

4. CHECK HARNESS AND CONNECTOR (REMOTE TOUCH POWER SOURCE)

(a) Disconnect the H70 remote touch 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. CHECK HARNESS AND CONNECTOR

(a) Disconnect the H71 remote touch connector.

(b) Disconnect the H56 stereo component amplifier assembly 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.

6. CHECK HARNESS AND CONNECTOR

(a) Disconnect the H71 remote touch connector.

(b) Disconnect the H62 navigation computer sub-assembly 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. REPLACE REMOTE OPERATION BOARD

(a) Replace the remote operation 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