Test U

PINPOINT TEST U: LFC 49/DTC C1948 - SEAT TRACK POSITION SENSOR CIRCUIT RESISTANCE OUT OF RANGE

Test U1:

Test U2:

Test U2-U4:

Test U4-U7:

Test U8-U9:

NOTE: Due to the seat track position sensor being a hall-effect type sensor, this pinpoint test will be diagnosing a current out of range fault instead of the current DTC definition for a resistance out of range fault.

Normal Operation
The restraints control module (RCM) monitors the driver seat track position sensor circuits. If the RCM detects a current out of range condition, it will store diagnostic trouble code (DTC) C1948 in memory and flash lamp fault code (LFC) 49 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A seat track sensor circuit resistance out of range fault can be caused by:
- damaged wiring, terminals, or connectors.
- a faulty driver seat track position sensor.
- a faulted RCM.