Test U: LFC 14/DTC B1901, LFC 41/DTC B1941, LFC 46/DTC B1885 and LFC 47/DTC B1886 - Unexpected Feature Present

Pinpoint Test U1:

Pinpoint Test U2:

Pinpoint Test U3-U4:

Pinpoint Test U: LFC 14/DTC B1901, LFC 41/DTC B1941, LFC 46/DTC B1885 and LFC 47/DTC B1886 - Unexpected Feature Present

Normal Operation

The air bag Electronic Crash Sensor (ECS) module supports features that are not used in F-Super Duty and Excursion vehicles. The wiring harness pins used by the ECS for these features are normally left disconnected. If the ECS detects a connection to pin 3, 4, 5, 6, 11 (F-Super Duty only), 12 (Excursion only), 16, 17, 18, 20, 23, 24, 25, 26 or 27 it will store a Diagnostic Trouble Code (DTC) B1885, B1886, B1901 or B1941 in memory and flash a Lamp Fault Code (LFC) 14, 41, 46 or 47.

Possible Causes

An unexpected feature present can be caused by:
- wiring harness fault causing connection to a normally unused ECS pin.
- a damaged or inoperative ECS module.