LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1179 (Steering Wheel And Steering Column) >> Diagnostic Information and Procedures >> DTC B2857: Steering Column Switch Input Active Too Long >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The telescoping steering column switch circuit provides an input to the LH Seat Control Module (SCM) when the switch is held closed in the in, button pressed toward the driver, or out, button pressed toward I/P, position. The SCM monitors a 12 volt signal applied to the steering column telescope forward switch signal circuit. When the steering column switch is closed in the in position, the column in 12 volt signal is grounded and pulled low within the SCM, indicating a column In request.