P1689 CHEVROLET – Traction Control Delivered Torque Output Circuit

P1689 CHEVROLET Possible Symptoms

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

P1689 CHEVROLET 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,Faulty Powertrain Control Module (PCM)

P1689 CHEVROLET Description

The Electronic Brake Control Module (EBCM) and the Powertrain Control Module (PCM) simultaneously control the Traction Control System (TCS). The PCM sends a Delivered Torque message via a Pulse Width Modulated (PWM) signal to the EBCM. The duty cycle of the signal is used to determine how much engine torque the PCM is delivering.