Display and Navigation Assembly Communication Error

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Display and Navigation Assembly Communication Error

Display and Navigation Assembly Communication Error

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY 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:
- "118 (display and navigation module 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.

Component Table





If the power source circuit is operating normally, proceed to the next step.
NEXT -- Continue to next step.
3. INSPECT RADIO RECEIVER ASSEMBLY





(a) Disconnect the F1, F23 and F24 receiver connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE RADIO RECEIVER ASSEMBLY
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE 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 the AVC-LAN wiring diagram, check the AVC-LAN circuit between the display and navigation module display and the component shown by the sub-code.
(1) Disconnect all connectors between the display and navigation module display and the component shown by sub-code.
(2) Check for an open or short in the AVC-LAN circuit between the display and navigation module display and the component shown by the sub-code.
OK:
There is no open or short circuit.
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 normal one and check if the same problem occurs again.
OK:
Same problem does not occur.
NG -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY
OK -- END