CM850 Electronic Control System – FAULT CODE 2386

Turbocharger Actuator Motor Circuit – Current Above Normal


Fault Code: 2386
SPN: 2975
FMI: 6/6
LAMP: Amber

Turbocharger actuator motor circuit – current is above normal. Excessive current detected at the turbocharger actuator motor circuit.

Possible low power. Power will be removed from the turbocharger actuator motor.

Turbocharger Actuator Motor Circuit

Circuit Description

The electronic control module (ECM) controls the turbocharger actuator motor, which changes the airflow of the turbocharger based on various engine operating conditions. The sliding nozzle in the turbocharger is operated by the turbocharger actuator motor. The actuator is a VDC motor that receives voltage from the ECM.

Component Location

The turbocharger actuator motor is part of the turbocharger actuator assembly, which is located on the exhaust side of the engine and is mounted to the bearing housing of the turbocharger. Refer to Procedure 100-002 for a detailed component location view.

Shop Talk

The ECM monitors the current draw of this circuit. If the ECM detects excessive current for a calibrated period of time, it records this fault. Possible causes of this fault include:

  • Turbocharger actuator motor signal (+ or -) leads shorted together in the engine harness, turbocharger actuator motor, or ECM
  • Low turbocharger actuator motor internal resistance.

Refer to Troubleshooting Fault Code t05-2386

Last Modified:  08-Jul-2010