V: Multiple DTC's-Unexpected Feature Present

Normal Operation
The air bag Electronic Crash Sensor (ECS) module supports features that are not used in these vehicles. The wiring harness pins used by the ECS for these features are normally left disconnected in these vehicles. If the ECS detects a connection to pin 3, 4, 5, 8, 9, 16, 18, 20, 23, 24, 25, 26 or 27, it will store a Diagnostic Trouble Code (DTC) B1871, B1877, B1878, B1879, B1881, B1882, B1883, B1884, B1885, B1886, B1889 or B1890 in memory and flash a Lamp Fault Code (LFC) 17, 18, 25, 27, 46 or 47.

Possible Causes
An unexpected feature present can be caused by:
- wiring harness fault causing connection to a normally unused ECS pin.
- internal ECS module fault.

V1:

V2:

V3 - V4:

LFC 17/DTC B1878 and B1879, LFC 18/DTC B1882 and B1883, LFC 25/DTC B1871, LFC 27/DTC B1884 and B1890, LFC 46/DTC B1877 and B1885, LFC 47/DTC B1881 and B1886 or DTC B1889-Unexpected Feature Present