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

PINPOINT TEST E: 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 accessory protocol interface module (APIM), the ABS module, the 4X4 control module (if equipped), the restraints control module (RCM), the headlamp control module (HCM) (if equipped), the steering angle sensor module (SASM) (if equipped) and the instrument cluster (IC). Voltage to the OCSM is supplied by circuit CBP46 (WH/BU). Ground is supplied by circuit GD143 (BK/VT).

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

E1-E2:

E3-E4: