Tests AG: LFC 57/DTC B2987 - Deployable Steering Column Circuit Resistance Low on Squib

PINPOINT TEST AG: LFC 57/DTC B2987 - DEPLOYABLE STEERING COLUMN CIRCUIT RESISTANCE LOW ON SQUIB

AG1-AG3:

AG3-AG5:

AG6-AG7:

NOTE: If the deployable steering column electrical connector becomes damaged or the deployable steering column has deployed, a new overlay wiring harness must be installed. Make sure to follow the installation instructions that are included in the service kit.

Normal Operation
As part of the SRS, the vehicle is equipped a deployable steering column. The restraints control module (RCM) will deploy (collapse) the steering column during a frontal collision when seat position information and other parameters reach predetermined limits.

The RCM checks the deployable steering column circuits for faults. If the RCM detect low resistance on either circuit, it will store diagnostic trouble code (DTC) B2987 in memory and flash lamp fault code (LFC 57) on the air bag indicator.

Possible Causes
A deployable steering column low resistance on squib range fault can be caused by:
- a faulted deployable steering column.
- a faulted RCM.