Pinpoint Test J: The Front Display Interface Module (FDIM) Is Completely Inoperative - Vehicles With Navigation

Information and Entertainment System

Pinpoint Test J: The Front Display Interface Module (FDIM) Is Completely Inoperative - Vehicles With Navigation

Refer to Wiring Diagram Set 130, Audio System/Navigation for schematic and connector information. Diagrams By Number

Normal Operation

The Audio Control Module (ACM) enables the Front Display Interface Module (FDIM) by sending voltage through the enable circuit.

Video display information is sent to the FDIM from the ACM through a dedicated video feed cable. The video feed cable is only serviced by overlaying a new component.

If the vehicle is equipped with a rear view camera, the video feed from the camera is hardwired to the FDIM.

For all other display information, including the climate control and SYNC system displays, messages are sent to the ACM via the Medium Speed Controller Area Network (MS-CAN). The ACM then alters the video feed to the FDIM based on the messages it receives.

This pinpoint test is intended to diagnose the following:

- Fuse
- Wiring, terminals or connectors
- FDIM
- ACM



PINPOINT TEST J: THE FDIM IS COMPLETELY INOPERATIVE - VEHICLES WITH NAVIGATION

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.

J1-J3:

J3-J5:

J5-J8: