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. Voltage to the OCSM is supplied by circuit CBP24 (VT/GN). Ground is supplied by circuit GD127 (BK/BU).

The OCSM shares the HS-CAN with the following modules:
- ABS module
- Accessory protocol interface module (APIM) (if equipped)
- Instrument cluster (IC)
- PCM
- Restraints control module (RCM)
- Transmission control module (TCM) (if equipped)
- 4X4 control module (if equipped)

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

F1:

F1-F3:

F3-F4: