Occupant Classification System Module (OCSM) DTC Chart

DTC	Description	Action To Take
B229A	Occupant Classification System Contamination	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC B229A is only present in the OCSM continuous, CLEAR all OCSM DTCs and PROVE OUT the SRS . GO to PINPOINT TEST V .
B229B	Occupant Classification System Obstruction	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC B229B is only present in the OCSM continuous, CLEAR all OCSM DTCs and PROVE OUT the SRS . GO to PINPOINT TEST W .
B1231	Event Threshold Exceeded (Crash Data Memory Full)	INSTALL new OCS rails and CLEAR all OCSM and RCM DTCs. REFER to OCCUPANT CLASSIFICATION SENSOR and INSPECTION AND REPAIR AFTER A SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPLOYMENT .
B1317	Battery Voltage High	GO to PINPOINT TEST AB .
B1318	Battery Voltage Low	GO to PINPOINT TEST AB .
B1342	ECU is Faulted	CARRY OUT Occupant Classification Sensor (OCS) system reset. REFER to OCCUPANT CLASSIFICATION SENSOR (OCS) SYSTEM RESET . DO NOT carry out the Zero Seat Weight Test at this time. CLEAR the DTCs and REPEAT the self-test. If the DTC is no longer present, CARRY OUT the Zero Weight Test to complete the repair. REFER to OCCUPANT CLASSIFICATION SENSOR (OCS) SYSTEM ZERO SEAT WEIGHT TEST . If the DTC is still present, INSTALL a new OCSM . REFER to OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) .
B2290	Occupant Classification System Fault	NOTE: If no on-demand or continuous DTC is present in the OCSM and DTC B2290 is only present in the RCM as a continuous DTC, CLEAR all RCM DTCs and PROVE OUT the SRS . GO to PINPOINT TEST F .
B2477	Module Configuration Failure	INSTALL a new OCSM . REFER to OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) .
C1941	Zero Seat Weight Test Failure	Can only be reported when carrying out Occupant Classification Sensor (OCS) system Zero Seat Weight Test. REFER to OCCUPANT CLASSIFICATION SENSOR (OCS) SYSTEM ZERO SEAT WEIGHT TEST .
U1900	CAN Communication Bus Fault - Receive Error	NOTE: DTC U1900 will set in a module that is reporting a communication fault from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new OCSM as part of repair for a OCS DTC U1900 fault. VIEW and RECORD RCM _MSG_ OCS fault PIDs to determine the module with the concern. REFER to MODULE COMMUNICATIONS NETWORK to diagnose the HS-CAN /module concern.
U2050	No Application Present	NOTE: If no on-demand or continuous DTC is present in the RCM and DTC U2050 is only present in the OCSM continuous, CLEAR all OCSM DTCs and PROVE OUT the SRS . INSTALL a new OCSM . REFER to OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) .
U2051	One or More Calibration Files Missing/Corrupt	INSTALL a new OCSM . REFER to OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) .