Test G

PINPOINT TEST G: LFC 16/DTC B2290 - OCCUPANT CLASSIFICATION (OCS) CIRCUIT FAULT

Test G1:

Test G2-G4:

Test G4-G6:

Test G6-G7:

Test G8-G10:

Test G10 Continued:

Test G11-G12:

Test G12-G13:

Test G14-G15:

Test G16-G18:

Test G18 Continued:

Test G19-G20:

Normal Operation
The restraints control module (RCM) checks the occupant classification sensor (OCS) system circuits for faults. If the RCM detects one of the following faults on any of the OCS circuits, it will store diagnostic trouble code (DTC) B2290 in memory and flash either lamp fault code (LFC) 16 (or higher priority code if one exists) on the air bag indicator.

The OCS system components (seat cushion foam pad, bladder with pressure sensor, and electronic control unit) are calibrated to each other and are serviced as an assembly. The OCS system components are not to be installed separately. If a new OCS system, OCS system component or seat cushion foam pad are needed, a new OCS system service kit (seat cushion foam pad, bladder with pressure sensor, and electronic control unit) must be installed as an assembly.

Fault Conditions
The RCM monitors for the following fault conditions:
- Low resistance.
- Circuit open.
- Circuit short to voltage.
- Circuit short to ground.

Possible Causes
An occupant classification sensor (OCS) circuit fault can be caused by:
- Wiring, terminals, or connectors.
- A faulty OCS system.
- RCM.