Navigation System

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: 01-DF: Master Error

DTC 01-DF - Master Error

DESCRIPTION





HINT:
*: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the engine switch on (ACC) or on (IG), this code is stored.
NOTICE:
- Before starting troubleshooting, be sure to clear DTCs to clear codes stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs.
- The display and navigation module display is the master unit.
- Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE:
Be sure to read the Description before performing the following procedures.

PROCEDURE

1. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY
(a) Refer to the Display and Navigation Assembly Power Source Circuit Display and Navigation Assembly Power Source Circuit.
If the power source circuit is operating normally, proceed to the next step.
NEXT -- Continue to next step.
2. 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.
3. IDENTIFY 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:
"NAVI" 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 (DISPLAY AND NAVIGATION MODULE DISPLAY - COMPONENT WHICH HAS STORED THIS CODE)
HINT:
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 which has stored this code.
(1) Disconnect all connectors between the display and navigation module display and the component which has stored this code.
(2) Check for an open or short in the AVC-LAN circuit between the display and navigation module display 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. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - RADIO RECEIVER)
HINT:
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 radio receiver.
(1) Disconnect all connectors between the display and navigation module display and the radio receiver.
(2) Check for an open or short in the AVC-LAN circuit between the display and navigation module display and the radio receiver.
OK:
There is no open or short circuit.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY
(a) Replace the display and navigation module display with a normal one Removal and check if the same problem occurs again.
OK:
Same problem does not occur.
NG -- REPLACE COMPONENT WHICH HAS STORED THIS CODE
OK -- END