Pinpoint Test L: An Individual Front Display Interface Module (FDIM) Display Is Inoperative (Vehicles With Navigation)
Information and Entertainment System
Pinpoint Tests
Pinpoint Test L: An Individual Front Display Interface Module (FDIM) Display Is Inoperative (Vehicles With Navigation)
Normal Operation
The Front Display Interface Module (FDIM) display provides information based on the video signal provided by the Audio Control Module (ACM) through the dedicated video feed cable. In addition to the information that the ACM controls for the navigation and audio system, the ACM receives inputs via the Medium Speed Controller Area Network (MS-CAN) from the following modules:
- Accessory Protocol Interface Module (APIM): SYNC system information
- HVAC module: climate control system information
If the ACM loses the signal from any of these modules, only that specific display is inoperative.
- DTC U0164:00 (Lost Communication With HVAC Control Module: No Sub Type Information) - set by the ACM if it does not receive status messages from the HVAC module for greater than 5 seconds with the ignition in the RUN position. When this occurs, the FDIM display "Climate OFF" at the home screen, the outside temperature display does not appear, and the touchscreen is unable to control the climate control system.
- DTC U0197:00 (Lost Communication With Telephone Control Module: No Sub Type Information) - set by the ACM if it does not receive status messages from the APIM for greater than 5 seconds with the ignition in the RUN position. When this occurs, the FDIM may not display correct (if any) SYNC system information. If the SYNC system is completely inoperative, Go To Pinpoint Test W. Pinpoint Test W: The SYNC System Is Completely Inoperative
This pinpoint test is intended to diagnose the following:
- Communication network concern
- FDIM
- ACM
PINPOINT TEST L: AN INDIVIDUAL FDIM DISPLAY IS INOPERATIVE (VEHICLES WITH NAVIGATION)
-------------------------------------------------
L1 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 J. Pinpoint Test J: The Front Display Interface Module (FDIM) Is Completely Inoperative (Vehicles With Navigation)
No
GO to L2.
-------------------------------------------------
L2 CHECK THE FDIM DISPLAY SEGMENTS
- Enter the following diagnostic mode on the scan tool: Audio Display Test.
- Follow the scan tool instructions to carry out the Audio Display Test.
- Do all of the FDIM segments illuminate?
Yes
GO to L3.
No
GO to L6.
-------------------------------------------------
L3 OBSERVE THE SPECIFIC INOPERATIVE DISPLAY
- Observe the inoperative FDIM display while carrying out the indicated diagnostic method as follows:
- Does the inoperative display confirm the expected results?
Yes
The system is operating correctly at this time. INFORM the customer on the operation of the FDIM displays.
No
GO to L4.
-------------------------------------------------
L4 CHECK FOR LOST COMMUNICATION DTCs
- Ignition ON.
- Clear continuous DTCs from all modules.
- Ignition OFF.
- Ignition ON.
- Wait at least 10 seconds.
- Retrieve all continuous DTCs (from all modules).
- Is DTC U0164, U0184, or U0197 present in any module?
Yes
GO to L5.
No
GO to L6.
-------------------------------------------------
L5 CHECK FOR SCAN TOOL COMMUNICATION WITH THE TRANSMITTING MODULE
- Carry out the network test using the scan tool.
- Does the scan tool communicate with the ACM, the APIM, and the HVAC module?
Yes
GO to L6.
No
REFER to Information Bus.
-------------------------------------------------
L6 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. If the concern is still present, GO to L7.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
-------------------------------------------------
L7 CHECK FOR CORRECT ACM OPERATION
- Ignition OFF.
- Disconnect all the ACM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the ACM connectors and make sure they seat correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?
Yes
INSTALL a new ACM. REFER to Audio Control Module (ACM) Audio Control Module (ACM). 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.
-------------------------------------------------