Test F: The Occupant Classification System Module (OCSM) Does Not Respond To The Scan Tool

PINPOINT TEST F: THE OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The occupant classification system module (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 transmission control module (TCM) (if equipped), the ABS module, the restraints control module (RCM), the 4X4 control module (if equipped) and the instrument cluster (IC). Voltage to the OCSM is supplied by circuit CBP17 (BN/GN). Ground is supplied by circuit GD145 (BK/BU).

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

F1-F2:

F2-F3:

F4: