Pinpoint Test H: The Audio System Does Not Operate Correctly From The Front Display Interface Module (FDIM) (Vehicles Without N

Information and Entertainment System

Pinpoint Test H: The Audio System Does Not Operate Correctly From The Front Display Interface Module (FDIM) (Vehicles Without Navigation)

Normal Operation

When a button is pressed on the Front Display Interface Module (FDIM), a message is sent to the Audio Control Module (ACM) via the Medium Speed Controller Area Network (MS-CAN). The ACM then takes the appropriate action.

- DTC B2924 (Audio Button Stuck) - sets when the FDIM detects a button as active for greater than 120 seconds during normal operation, or for any duration during the self-test. When this occurs, the FDIM disables that particular button until the fault is cleared, or until the next ignition cycle.

This pinpoint test is intended to diagnose the following:

- Communication network concern
- FDIM



PINPOINT TEST H: THE AUDIO SYSTEM DOES NOT OPERATE CORRECTLY FROM THE FDIM (VEHICLES WITHOUT NAVIGATION)

-------------------------------------------------
H1 CHECK THE FDIM DTCs


- Carry out the FDIM self-test.
- Is DTC B2924 present?

Yes
INSTALL a new FDIM. REFER to Front Display Interface Module (FDIM) - Without Navigation Front Display Interface Module (FDIM) - Without Navigation.
TEST the system for normal operation.

No
GO to H2.

-------------------------------------------------
H2 OBSERVE THE FDIM DISPLAY


- Turn the audio system on and observe the FDIM screen.
- Is the FDIM display completely inoperative?

Yes
GO to Pinpoint Test G. Pinpoint Test G: The Front Display Interface Module (FDIM) Is Completely Inoperative (Vehicles Without Navigation)

No
GO to H3.

-------------------------------------------------
H3 CHECK FOR CORRECT FDIM OPERATION


- Ignition OFF.
- Disconnect the FDIM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the FDIM connector and make sure it seats correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?

Yes
INSTALL a new FDIM. REFER to Front Display Interface Module (FDIM) - Without Navigation Front Display Interface Module (FDIM) - Without Navigation.
TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

-------------------------------------------------