Normal Operation - Occupant Classification System Module (OCSM)
WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The Occupant Classification System Module (OCSM) continuously monitors the input voltage for correct operation. If the OCSM detects input voltage below 8 volts, it stores DTC U3003:16 in memory. If the OCSM detects input voltage above 17.2 volts, it stores DTC U3003:17 in memory. If the OCSM sets DTC U3003:16 or U3003:17, it sends a fault message to the RCM . The RCM then sends a message to the IPC to illuminate the air bag warning indicator.
DTC DESCRIPTION
| DTC Description | Fault Trigger Conditions |
|---|---|
|
If the RCM detects voltage below 9.5 volts with a Supplemental Restraint System (SRS) fault, it sets this DTC. |
|
If the RCM detects voltage above 16 volts with a SRS fault or above 20 volts without a SRS fault, it sets this DTC. |
|
If the OCSM detects voltage below 9.6 volts when another Occupant Classification System (OCS) fault is present, or if the OCSM detects voltage below 7.6 volts, regardless of fault status, it sets this DTC. |
|
If the OCSM detects voltage above 16.5 volts when another Occupant Classification System (OCS) fault is present, or if the OCSM detects voltage above 18.5 volts, regardless of fault status, it sets this DTC. |
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- RCM
- OCSM