Navigation ECU Communication Stop Mode

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Navigation ECU Communication Stop Mode
- Navigation ECU Communication Stop Mode

DESCRIPTION





HINT
"AVN1" refers to the circuit that includes the navigation ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output How to Proceed With Troubleshooting.
* After performing repairs, perform the procedure listed in DTC Reproduction Method and confirm that the DTCs are not output again.
* DTC Reproduction Method: Turn the engine switch on (IG) and wait at least 60 seconds.
* After the repair, perform CAN Bus Check and check that all the ECUs and sensors connected to the CAN communication system are displayed Diagnosis System.

PROCEDURE

1. CHECK FOR OPEN IN CAN BUS LINE (DISPLAY AND NAVIGATION MODULE DISPLAY BRANCH LINE)

(a) Turn the engine switch off.

(b) Disconnect the display and navigation module display connector.





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

Standard Resistance:





NG -- REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY BRANCH LINE)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

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





Standard Resistance:





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

Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

OK -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY