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C0643 CADILLAC

C0643 CADILLAC - Right Front Normal Force Circuit High

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Electronic Brake Control module (EBCM)
  • Electronic Brake Control module (EBCM) harness is open or shorted
  • Electronic Brake Control module (EBCM) circuit poor electrical connection

Possible symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C0643 Cadillac Description

The Continuously Variable Road Sensing Suspension (CVRSS) module estimates the road surface and communicates that information to the Electronic Brake Control module (EBCM). The CVRSS module provides a Pulse Width Modulation (PWM) signal to the EBCM through the left and right normal force signal circuits. The CVRSS module sends each normal force value twice to the EBCM. The possible values of the PWM duty cycle are 20%, 40%, 60% and 80%, with the valid range from 10-90%. The EBCM uses this information to provide improved rough-road braking performance.
OBDII Code C0643 Cadillac - Right Front Normal Force Circuit High - AutoCodes.com

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C0643 CADILLAC Comments

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