Class 2 Serial Data Circuit
WARNING: This page is about a different car, the 2004 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
The class 2 serial data circuit is configured as a ring with discrete lines entering and leaving each module. This allows communications to the modules on the ring if one of the 2 discrete circuits is open.
A total list of the control modules on the class 2 serial data circuit can include the following:
- Dash Integration Module (DIM)
- Digital Radio Receiver (DRR) w/U2S
- Driver Door Module (DDM)
- Electronic Brake Control Module (EBCM)
- Head Up Display (HUD) w/UV6
- HVAC Control Module w/C67
- Inflatable Restraint Sensing and Diagnostic Module (SDM)
- Instrument Panel Cluster (IPC)
- Instrument Panel Integration Module (IPM) w/CJ2
- Memory Seat Module (MSM) w/A45
- Powertrain Control Module (PCM)
- Radio
- Rear Integration Module (RIM)
- Remote Control Door Lock Receiver (RCDLR)
- Remote Playback Device - CD Changer w/U1S
- Theft Deterrent Control Module
- Vehicle Communication Interface Module (VCIM)
The following modules have only one communication line connection to the class 2 data circuit:
- Digital Radio Receiver (DRR)
- Driver Door Module (DDM)
- Head Up Display (HUD) w/UV6
- Memory Seat Module (MSM) w/A45
- Vehicle Communication Interface Module (VCIM)