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Navigation System





NAVIGATION: NAVIGATION SYSTEM: 01-DF: Master Error
01-DF - Master Error

DESCRIPTION





HINT
*1: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the ignition switch on (IG or ACC), this code is stored.

NOTICE:
* Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reason described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs.
* The navigation receiver assembly is the master unit.
* Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

INSPECTION PROCEDURE

NOTICE:
Be sure to read DESCRIPTION before performing the following procedures.

PROCEDURE

1. CHECK NAVIGATION RECEIVER ASSEMBLY POWER SOURCE CIRCUIT

Refer to the "Navigation Receiver Assembly Power Source Circuit" Navigation Receiver Assembly Power Source Circuit.

If the power source circuit is operating normally, proceed to the next step.

NEXT -- Continue to next step.

2. INSPECT NAVIGATION RECEIVER ASSEMBLY

(a) Disconnect the navigation receiver assembly connectors.





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

Standard resistance:





NG -- REPLACE NAVIGATION RECEIVER ASSEMBLY Removal
OK -- Continue to next step.

3. IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

(a) Enter the diagnostic mode.





(b) Press the "LAN Mon" switch to change to "LAN Monitor" mode.

(c) Identify the component which has stored this code.

Component Table:





HINT
"AVN" is the component which has stored this code in the example shown in the illustration.

NEXT -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR

HINT
For details of the connectors, refer to "TERMINALS OF ECU" Pinout Values and Diagnostic Parameters.

(a) Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the navigation receiver assembly and the component which has stored this code.

(1) Disconnect all connectors between the navigation receiver assembly and the component which has stored this code.

(2) Check for an open or short in the AVC-LAN circuit between the navigation receiver assembly and the component which has stored this code.





OK:

There is no open or short circuit.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. REPLACE NAVIGATION RECEIVER ASSEMBLY

(a) Replace the navigation receiver assembly with a normal one and check if the same problem occurs again Removal.

OK:

Same problem does not occur.

NG -- REPLACE COMPONENT WHICH HAS STORED THIS CODE

OK -- END