Navigation ECU Communication Stop Mode

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

DESCRIPTION

HINT
* "AVN" refers to the circuit that includes the display and navigation module display.
* The display and navigation module display contains the navigation ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:
* Turn the engine switch off before measuring the resistance of CAN bus main wires and CAN bus branch wires.
* After the engine switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
* Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches, or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

PROCEDURE

1. CHECK OPEN IN CAN NO. 1 BUS WIRE (DISPLAY AND NAVIGATION MODULE DISPLAY BRANCH WIRE)

(a) Turn the engine switch off.

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

NG -- REPAIR OR REPLACE CAN NO. 1 BUS BRANCH WIRE OR CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (+B, IG, ACC, GND1)

(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:

Result:

B -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Removal

C -- REPAIR OR REPLACE HARNESS OR CONNECTOR

A -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Removal