Normal Operation and Fault Conditions

The RCM continuously monitors the second row left seatbelt buckle switch circuits for the following faults:

Open circuit
Short to voltage
Short to ground
Current out of range
Faulted second row left seatbelt buckle switch
If a fault is detected, the RCM stores DTC B140C:11, B140C:12, B140C:13 or B140C:1D in memory and sends a message to the IPC to illuminate the airbag warning indicator.

PPT U RCM DTC FAULT TRIGGER CONDITIONS

DTC	Description	Fault Trigger Conditions
B140C:11	Second Row Driver Side Seatbelt Sensor: Circuit Short to Ground	Sets when the RCM senses a short to ground from the second row left seatbelt buckle switch circuit for more than 6 seconds.
B140C:12	Second Row Driver Side Seatbelt Sensor: Circuit Short to Battery	Sets when the RCM senses a short to voltage from the second row left seatbelt buckle switch circuit for more than 6 seconds.
B140C:13	Second Row Driver Side Seatbelt Sensor: Circuit Open	Sets when the RCM senses an open from either second row left seatbelt buckle switch circuit for more than 6 seconds.
B140C:1D	Second Row Driver Side Seatbelt Sensor: Circuit Current Out of Range	Sets when the RCM measures current outside of an acceptable range from the second row left seatbelt buckle switch circuit for more than 6 seconds.