Navigation System (For DVD)

NAVIGATION: NAVIGATION SYSTEM (for DVD): B1591,B15D1: No Response from Audio HU
B1591 - No Response from Audio HU
B15D1 - Audio HU Disconnectedn

DESCRIPTION

The display and navigation module display and radio receiver assembly are connected by the MOST communication line.

When an MOST communication error occurs between the display and navigation module display and the radio receiver assembly, these DTCs will be stored.

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

WIRING DIAGRAM

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 an 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 DVD).

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

OK:

No DTCs are output.

NG -- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY POWER SOURCE)

OK -- END

4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY POWER SOURCE)

(a) Disconnect the E109 radio receiver assembly 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 (MOST COMMUNICATION LINE)

(a) Disconnect the E109 radio receiver assembly connector.

(b) Disconnect the M36 stereo component amplifier assembly connector.

(c) Disconnect the E105 display and navigation module display connector.

(d) Measure the resistance between the display and navigation module display and the radio receiver assembly according to the value(s) in the table below.

Standard Resistance:

(e) Measure the resistance between the radio receiver assembly and the stereo component amplifier assembly 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 RADIO RECEIVER ASSEMBLY

(a) Replace the radio receiver assembly Removal.

(b) Clear the DTCs Navigation System (for DVD).

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

OK:

No DTCs are output.

NG -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Removal

OK -- END