Navigation System (For HDD)

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HDD): B159E, B1568: No Response from Clock Device
B159E - No Response from Clock Device
B1568 - Clock Device Disconnected

DESCRIPTION

The navigation computer sub-assembly and center cluster module circuit are connected by the AVC-LAN communication line.

When an AVC-LAN communication error occurs between the navigation computer sub-assembly and center cluster module circuit, these DTCs will be stored.

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.
* These DTCs 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.

OK:

No DTCs are output.

NG -- CHECK HARNESS AND CONNECTOR (CENTER CLUSTER MODULE CIRCUIT POWER SOURCE)

OK -- END

4. CHECK HARNESS AND CONNECTOR (CENTER CLUSTER MODULE CIRCUIT POWER SOURCE)

(a) Disconnect the H80 center cluster module circuit 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 H80 center cluster module circuit connector.

(b) Disconnect the H61 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.

6. REPLACE CENTER CLUSTER MODULE CIRCUIT

(a) Replace the center cluster module circuit Removal.

(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