B159F

NAVIGATION: NAVIGATION SYSTEM: B1561, B159F: XM Tuner Disconnected (Command Line)
B159F - No Response from XM Tuner

DESCRIPTION

The multi-media interface ECU and stereo component tuner assembly are connected by the AVC-LAN communication line.

The navigation receiver assembly is also connected to the multi-media interface ECU by the AVC-LAN communication line.

When an AVC-LAN communication error occurs between the multi-media interface ECU and stereo component tuner assembly, these DTCs will be stored.

HINT
If either B1561 or B159F and either B156B or B156E are output, troubleshoot for B156B or B156E first.

HINT
* *1: Even if no fault is present, this DTC may be stored depending on the battery condition or engine start voltage.
* The navigation receiver 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.
* After replacing the stereo component tuner assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.

PROCEDURE

1. CHECK DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

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

Result:

HINT
If either B1561 or B159F and either B156B or B156E are output, troubleshoot for B156B or B156E first.

C -- END

B -- GO TO DTC CHART Navigation System
A -- Continue to next step.

2. 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.

3. 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.

4. CHECK DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

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

OK:

No DTCs are output.

NG -- CHECK HARNESS AND CONNECTOR (STEREO COMPONENT TUNER ASSEMBLY POWER SOURCE)

OK -- END

5. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT TUNER ASSEMBLY POWER SOURCE)

(a) Disconnect the E29 stereo component tuner 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.

6. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - STEREO COMPONENT TUNER ASSEMBLY)

(a) Disconnect the E31 multi-media interface ECU connector.

(b) Disconnect the E29 stereo component tuner 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 STEREO COMPONENT TUNER ASSEMBLY

(a) Replace the stereo component tuner assembly Removal.

(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

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

OK:

No DTCs are output.

NG -- REPLACE MULTI-MEDIA INTERFACE ECU

OK -- END

8. REPLACE MULTI-MEDIA INTERFACE ECU

(a) Replace the multi-media interface ECU Removal.

(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

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

OK:

No DTCs are output.

NG -- REPLACE NAVIGATION RECEIVER ASSEMBLY Removal

OK -- END