Multi-Display Communication Error

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Multi-display Communication Error

Multi-display Communication Error

INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE





(a) Enter the diagnostic mode.
(b) Press the "LAN Mon" switch to change to "LAN Monitor" mode.
(c) Identify the component shown by the sub-code.
HINT:
- "110 (multi-display)" is the component shown by the sub-code in the example shown in the illustration.
- The sub-code will be indicated by its physical address.
- For the component list, refer to Diagnosis Display Detailed Description in the System Description Description and Operation.

NEXT -- Continue to next step.
2. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE
(a) Inspect the power source circuit of the component shown by the sub-code.
If the power source circuit is operating normally, proceed to the next step.

Component Table





NEXT -- Continue to next step.
3. INSPECT RADIO RECEIVER
(a) Disconnect the radio receiver connectors.





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






NG -- REPLACE RADIO RECEIVER
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMPONENT SHOWN BY SUB-CODE)
HINT:
- Start the check from the circuit that is near the component shown by the sub-code first.
- For details of the connectors, refer to Terminals of ECU Pinout Values and Diagnostic Parameters.
(a) Referring to AVC-LAN Wiring Diagram below, check the AVC-LAN circuit between the multi-display and the component shown by the sub-code.
(1) Disconnect all connectors between the multi-display and the component shown by sub-code.
(2) Check for an open or short in the AVC-LAN circuit between the multi-display and the component shown by the sub-code.
OK:
There are no open or short circuits.





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. REPLACE COMPONENT SHOWN BY SUB-CODE
(a) Replace the component shown by the sub-code with a known good one and check if the same problem occurs again.
OK:
Same problem does not occur.
NG -- REPLACE MULTI-DISPLAY
OK -- END