B156C

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: B156C; Extension Module Disconnected; 2013 MY Corolla [07/2012 -]
B156C - Extension Module Disconnected

DESCRIPTION

The extension module and the radio and display receiver assembly are connected by the AVC-LAN communication line.

When an AVC-LAN communication error occurs between the extension module and the radio and display receiver assembly, this DTC will be stored.

HINT
The radio and display receiver assembly is the master unit.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:
After replacing the radio and display receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, XM radio ID registration is necessary (w/ SDARS System).

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 DTC is output again.

OK:

No DTCs are output.

NG -- CHECK HARNESS AND CONNECTOR (EXTENSION MODULE POWER SOURCE)

OK -- END

4. CHECK HARNESS AND CONNECTOR (EXTENSION MODULE POWER SOURCE)

(a) Disconnect the extension module connector.

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

Standard Resistance:

NG -- CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - EXTENSION MODULE)
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - EXTENSION MODULE)

(a) Disconnect the radio and display receiver assembly connector.

(b) Disconnect the extension module 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 EXTENSION MODULE

(a) Replace the extension module 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 RADIO AND DISPLAY RECEIVER ASSEMBLY Removal

OK -- END

7. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - EXTENSION MODULE)

(a) Disconnect the radio and display receiver assembly connector.

(b) Disconnect the extension module connector.

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

Standard Resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Removal