Test K: An Individual Front Display Interface Module (FDIM) Display Is Inoperative/Does Not Operate Correctly
PINPOINT TEST K: AN INDIVIDUAL FRONT DISPLAY INTERFACE MODULE (FDIM) DISPLAY IS INOPERATIVE/DOES NOT OPERATE CORRECTLYNormal Operation
The FDIM receives inputs from multiple modules, and displays that information on the screen. The input is in the form of a message delivered via the medium speed controller area network (MS-CAN).
DTC U0155 (Lost Communication With Instrument Panel Cluster [IC] Control Module) - sets when the compass heading message is not received by the FDIM for greater than 5 seconds. When this message is missing, the FDIM will not display compass information.
DTC U0164 (Lost Communication With HVAC Control Module [EATC]) - sets when the climate control status message is not received by the FDIM for greater than 5 seconds. When this message is missing, the FDIM will not display climate control information.
DTC U0184 (Lost Communication With Radio [ACM]) - sets when the audio unit status message is not received by the FDIM for greater than 5 seconds. When this message is missing, the FDIM will not display audio information.
DTC U0193 (Lost Communication With Digital Audio Control Module [SDARS]) - sets when the satellite radio receiver status message is not received by the FDIM for greater than 5 seconds. When this message is missing, the satellite radio receiver will be inoperative.
Any of these DTCs can be set when the vehicle experiences a low battery voltage condition, which should also set DTC B1318 in at least one module. The low battery voltage condition must be corrected before an accurate diagnosis of a missing message can be made.
Also, if there are no symptoms present, these DTCs can be ignored.
This pinpoint test is intended to diagnose the following:
- Interior lamps system concern
- Climate control system concern
- Audio system concern
- Satellite radio system concern
- FDIM
