Circuit Description

The toothed wheel generates a voltage pulse as it moves past the wheel speed sensor. Each tooth-gap-tooth series on the wheel generates the pulses. The electronic brake control module (EBCM) uses the frequency of these pulses to determine wheel speed. The voltage generated depends on the air gap between the wheel speed sensor and the toothed wheel, and on the wheel speed.

This DTC will set when the EBCM cannot identify which wheel speed sensor is causing the malfunction. It is necessary to inspect all wheel speed sensors and associated wiring to determine the cause of the DTC.