Abs Module Circuits

When checking ABS control module circuit, refer to ABS MODULE TERMINAL IDENTIFICATION (A4 & S4) table. See Fig 1.

ABS MODULE TERMINAL IDENTIFICATION (A4 & S4)

Terminal No.

Related Circuit

Right Rear Wheel Speed Sensor

⁽¹⁾⁽²⁾ Right Rear Wheel Speed Sensor

⁽¹⁾ Right Front Wheel Speed Sensor

⁽²⁾ Right Front Wheel Speed Sensor

Right Front Wheel Speed Sensor

Left Front Wheel Speed Sensor

Left Rear Wheel Speed Sensor

⁽³⁾ Instrument Cluster Processor

K-Wire

⁽⁴⁾ PCM; Engine Torque & Misfire Monitoring

Stoplight Switch

⁽¹⁾ Right Front ABS Wheel Speed Sensor

Ground; ABS Return Flow Pump

Positive Battery Voltage

Ground; ABS Control Module

⁽⁴⁾ Traction Control Indicator Light Activation

ABS Warning Light Activation

⁽⁵⁾ Left Rear Speed Sensor Output

⁽⁵⁾ Right Rear Speed Sensor Output

PCM; Engine Torque Input (Actual)

⁽⁴⁾ Transmission Control Signal

⁽⁴⁾ Engine RPM Signal

ASR Switch (Traction Control System)

⁽¹⁾	Vehicles with front wheel drive and ABS/EDL/TCS.

⁽²⁾	Vehicles with all-wheel drive and ABS/EDL.

⁽³⁾	Only vehicles equipped with EDL.

⁽⁴⁾	Only vehicles equipped with TCS.

⁽⁵⁾	In vehicles with navigation system.

Fig 1: Identifying Terminals Of ABS Control Module (A4, S4)

Courtesy of AUDI OF AMERICA, INC.