Test N: The Front Display Interface Module (FDIM) Does Not Respond To The Scan Tool

PINPOINT TEST N: THE FRONT DISPLAY INTERFACE MODULE (FDIM) DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The front display interface module (FDIM) communicates with the scan tool through the medium speed controller area network (MS-CAN). Circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the network connection to the front display interface module. The FDIM shares the MS-CAN network with the instrument cluster, smart junction box (SJB), electronic automatic temperature control (EATC) or electronic manual temperature control (EMTC) module, audio unit, front control interface module (FCIM) and satellite radio receiver. Voltage to the front display interface module is provided by circuit SBP14 (BN/RD). Ground is provided by circuit GD114 (BK/BU).

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- FDIM

N1-N2:

N2-N4: