Test B: The Occupant Classification System Module (OCSM) Does Not Communicate With the Scan Tool
PINPOINT TEST B: THE OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) DOES NOT COMMUNICATE WITH THE SCAN TOOLNormal Operation
The OCSM communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits VDB04 (WH/BU) (HS-CAN +) and VDB05 (WH) (HS-CAN -) provide the network connection to the OCSM. The OCSM shares the HS-CAN with the PCM, the 4X4 control module, the restraints control module (RCM), the SJB, and the instrument cluster (IC). Voltage for the RCM is provided by circuit CBP08 (GY/YE) and circuit GD174 (BK/WH) provides ground.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- OCSM
B1-B2:
B2-B3:
B4:
