Class 2 Serial Data Circuit Left Hand Drive (LHD)

The class 2 serial data circuit on this vehicle consists of a hybrid ring and star configuration. Each module on the ring has 2 class 2 serial data circuits connected to it. If there is 1 open on the ring serial data communication will still take place. If there is more than 1 open on the ring, the modules not connected to the class 2 serial data circuit will not communicate. If there is 1 open on the star, the module not connected to the class 2 serial data circuit will not communicate. The following modules and splice packs are connected to the class 2 serial data circuit in a ring fashion:

• SP200
• The instrument panel cluster (IPC)
• The engine/powertrain control module (ECM/PCM)
• The electronic brake control module (EBCM)
• The HVAC control module
• The radio
• The dash integration module (DIM)
• The rear integration module (RIM)
• SP303
• The inflatable restraint sensing and diagnostic module (SDM)
• SP300

The star has the following 3 splice packs:

• SP200 located in the left side of the instrument panel, near the steering column, taped to the instrument panel harness.
• SP303 located in the right rear of the passenger compartment, taped to the body harness, approximately 24 cm (9.5 in) from the fuse block - right rear.
• SP300 located in the left side middle of the passenger compartment, taped to the body harness, near the carpet seam.

The following devices are connected to the class 2 serial data circuit in star fashion via splice packs:

• SP200
  • The DLC
  • The theft deterrent control module (VTD)
• SP303
  • The right rear door module (RRDM)
  • The radio antenna module
  • The TV antenna module
  • The vehicle communication interface module (VCIM)
  • The digital radio receiver (DRR)
  • The front passenger door module (FPDM)
• SP300
  • The audio amplifier (AMP)
  • The left rear door module (LRDM)
  • The driver door switch assembly (DDSA)
  • The driver door module (DDM)
  • The memory seat module (MSM) w/A45

Refer to Data Link References  in order to familiarize yourself with the architecture of the class 2 serial data circuit.