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Diagnostic Routine AE




Diagnostic Routine AE

Diagnostic Overview

One Or More FCDIM Display Is Inoperative Or Does Not Operate Correctly

Normal Operation and Fault Conditions

All of the displays on the FCDIM (Front Control/Display Interface Module) screen are controlled through network messages. The modules sending display data to the FCDIM (Front Control/Display Interface Module) are:
- ACM (Audio Control Module): audio system information
- IPC (Instrument Panel Cluster): warning messages and indicators

If the FCDIM (Front Control/Display Interface Module) loses the signal from any of these modules, only those specific displays are inoperative.

Pinpoint Test

1. CHECK FOR SCAN TOOL COMMUNICATION WITH THE FCDIM (Front Control/Display Interface Module)

1. Using a scan tool, perform the network test.

Does the scan tool communicate with the FCDIM (Front Control/Display Interface Module)?








2. CHECK FOR LOST COMMUNICATION DTCs (Diagnostic Trouble Codes) SET IN THE FCDIM (Front Control/Display Interface Module)

1. Using a scan tool, retrieve all continuous DTCs (Diagnostic Trouble Codes).

Is DTC (Diagnostic Trouble Code) U0155:00 or U0184:00 present in the FCDIM (Front Control/Display Interface Module)?








3. CHECK THE FCDIM (Front Control/Display Interface Module) DISPLAY SEGMENTS

1. Using a scan tool, view the FCDIM (Front Control/Display Interface Module) PIDs (Parameter Identifications).

2. Command all of the LCD (Liquid Crystal Display) segments on using the FCDIM (Front Control/Display Interface Module) active command LCD_SEG (All LCD (Liquid Crystal Display) Segments).

Do all of the FCDIM (Front Control/Display Interface Module) segments illuminate?








4. CHECK FOR CORRECT FCDIM (Front Control/Display Interface Module) OPERATION

1. Disconnect and inspect the FCDIM (Front Control/Display Interface Module) connector.

2. Repair:

- corrosion (install new connector or terminals - clean module pins)
- damaged pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Reconnect the FCDIM (Front Control/Display Interface Module) connector. Make sure it seats and latches correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?







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