CM2150 Electronic Control System – FAULT CODE 3616

VGT Actuator Position – Special Instructions


Overview

CODE REASON EFFECT
Fault Code: 3616
PID: 
SPN: 2633
FMI: 
LAMP: None
SRT: 

VGT Actuator Position – Special Instructions.

Engine power may be derated.

ISB, ISC, and ISL – VGT Actuator Circuit
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Circuit Description

The variable geometry turbocharger (VGT) is electronically activated by the VGT actuator. The VGT actuator is a smart device that receives information via the J1939 data link from the primary engine electronic control module (ECM). The VGT actuator performs its own diagnostics and reports errors back to the primary engine ECM using the J1939 data link.

Component Location

The VGT actuator is located on the turbocharger bearing housing.

Conditions for Running the Diagnostics

This diagnostic runs continuously when the keyswitch is initially turned to the ON position.

The keyswitch must be completely turned OFF for more than 30 seconds before this diagnostic will run at initial key ON.

Conditions for Setting the Fault Codes

The ECM has detected an abnormal VGT position at key ON.

Action Taken When the Fault Code is Active

  • The ECM logs the fault code 10 seconds after the diagnostic runs and fails.

Conditions for Clearing the Fault Code

The keyswitch must be completely turned OFF for more than 30 seconds before this diagnostic will run at initial key ON.

The fault code will become inactive if the error condition no longer exists.

Shop Talk

Verify the ECM calibration is correct. Check the calibration revision history found on QuickServe™ Online for applicable corrections to the calibration stored in the ECM. If necessary, calibrate the ECM. Refer to Procedure 019-032 in Section 19.

This is an informational fault code indicating that the VGT actuator was unable to go to the desired position at key ON. While active, the ECM will continuously attempt to restore normal VGT operation until the engine coolant temperature reaches 74°C [165°F].

If the condition continues to exist after the coolant reaches 74°C [165°F], Fault Code 2387 will become active and Fault Code 3616 will become inactive. Fault Code 2346 may set due to a resulting fueling derate.

Refer to Troubleshooting Fault Code t05-3616

Last Modified:  01-Aug-2010