Pinpoint Test B: No Display On Navigation Screen (Screen Does Not Change) Tests

WARNING: This page is about a different car, the 2006 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When re-confirming the symptoms after inspecting the wiring harness/connector, turn the ignition status to OFF, wait for the Audio power button LED on the display to turn OFF, then turn the ignition status to ON and run the diagnosis again from the beginning.

SOFT KEY TEST
Check the navigation system soft key operation.

Is operation normal when operating the soft key test?

YES: Go to step 2.

NO: Refer to Pinpoint Test M .
HARD KEY TEST
Check the navigation system hard key operation.

Is operation normal when pressing the navigation hard key?

YES: Go to step 3.

NO: Refer to Pinpoint Test C .
DISPLAYED MESSAGE CHECK
Check for displayed messages.

Are the 'No picture signal input', 'Navigation not installed' or 'No navigation available' messages being displayed?

YES: Go to step 4.

NO: Refer to Pinpoint Test A .
NAVIGATION MODULE POWER AND GROUND CHECKS
Refer to electrical circuit diagrams and check integrity of power and ground wiring harness and connectors to navigation module.

Was a fault identified with the navigation module power and ground harness or connections?

YES: Rectify the fault and re-test the vehicle.

NO: Go to step 5.
HARNESS/CONNECTOR CHECKS
Refer to the electrical circuit diagrams and check integrity of navigation module to display screen private CAN and GVIF harness and connections.

Was a fault identified with the navigation module to display screen harness or connections?

YES: Rectify the fault and re-test the vehicle.

NO: Install a new navigation module. module