Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

CHECK NAVIGATION ECU (SERVICE CHECK MODE)

Enter the System Check Mode (see DTC CHECK/CLEAR ).

Check the navigation ECU.

Result:

NAVIGATION ECU (SERVICE CHECK MODE)

Result	Proceed to
"NG" is displayed	A
"OK" is displayed	B
"NCON" is displayed	C

A: TROUBLESHOOT FOR EACH DIAGNOSIS
B: REPLACE MULTI-DISPLAY
C: GO TO NEXT STEP

CHECK NAVIGATION ECU POWER SOURCE CIRCUIT
1. See NAVIGATION ECU POWER SOURCE CIRCUIT . .
- NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
- OK: GO TO NEXT STEP
CHECK MULTI-DISPLAY POWER SOURCE CIRCUIT
1. See MULTI-DISPLAY POWER SOURCE CIRCUIT . .
- NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
- OK: GO TO NEXT STEP
CHECK DISPLAY SIGNAL CIRCUIT
1. Check the display signal circuit (see DISPLAY SIGNAL CIRCUIT BETWEEN NAVIGATION ECU AND MULTI-DISPLAY ).
- NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
- OK: REPLACE MULTI-DISPLAY