B159F

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

DESCRIPTION

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

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

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

HINT
If either B156B or B156E and either B1561 or B159F 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:
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 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 Reading and Clearing Diagnostic Trouble Codes.

(b) Recheck for DTCs and check if the same trouble occurs again.

OK:

No DTCs are output.

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

OK -- END

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

(a) Disconnect the stereo component tuner assembly connector.





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

Standard Resistance:





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

Standard Voltage:





Text in Illustration





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

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

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





(b) Disconnect the stereo component tuner assembly connector.





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

Standard Resistance:





Text in Illustration





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

6. 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 trouble occurs again.

OK:

No DTCs are output.

NG -- REPLACE MULTI-MEDIA INTERFACE ECU

OK -- END

7. 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 trouble occurs again.

OK:

No DTCs are output.

NG -- REPLACE NAVIGATION RECEIVER ASSEMBLY Removal

OK -- END