Test U: LFC 49/DTC C1947 - Seat Track Position Switch Short to Gnd.

U1:

U2:

U2 - U3:

U4 - U5:

Normal Operation
The Restraints Control Module (RCM) monitors the driver seat position switch circuits. If the RCM detects a short to ground, it will store Diagnostic Trouble Code (DTC) C1947 in memory and flash Lamp Fault Code (LFC) 49 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A driver seat belt buckle switch open circuit fault can be caused by:
^ Wiring, terminals, or connectors.
^ A faulty RCM.