2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 305

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HDD): B156E,B156B: No Response from Multi-media Interface

ECU

B156E - No Response from Multi-media Interface ECU

B156B - Multi-media Interface ECU Disconnected

DESCRIPTION

The display and navigation module display and multi-media interface ECU are connected by the AVC-LAN communication line.

When an AVC-LAN communication error occurs between the display and navigation module display and multi-media interface ECU, 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 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.