B3623
DTC B3623
Circuit Description
The body control module (BCM) monitors the adaptive cruise control (ACC) gap adjustment switch signal circuit to determine the driver selected headway. The gap switch is a momentary contact switch that connects a series of resistors. Each switch state, inactive, up and down, corresponds to a specific resistance value. The BCM determines the switch selection by the voltage drop across the resistor. The BCM sets DTC B3623 when it detects a stuck gap up/down switch.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B3623 Steering Wheel Controls Adaptive Cruise Control (ACC) Gap Up/Down Signal Circuit.
Conditions for Running the DTC
Ignition is in RUN.
Conditions for Setting the DTC
Gap adjustment switch signal circuit remains in the same state for 1 minute
Action Taken When the DTC Sets
Gap +/- switch remains in the last selected position
Conditions for Clearing the MIL/DTC
* The DTC becomes history when the fault is no longer present.
* A History DTC clears after 100 malfunction free ignition cycles.
* The BCM module receives a clear code command from the scan tool.
Diagnostic Aids
Refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids. Component Tests and General Diagnostics
Test
