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Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal or Shorted to Low Source
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 2183 PID: S028 SPN: 1072 FMI: 4 LAMP: Amber SRT: |
Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the engine brake solenoid number 1 signal circuit. |
Engine brake on cylinders 1,2, and 3 can not be activated or exhaust brake will not operate. |
 Engine Brake Circuit
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Circuit Description
This circuit can be used to control either an exhaust brake or an engine brake depending on the application. The ECM controls engine brakes on cylinders 1, 2, and 3 by sending a signal on the engine brake solenoid number 1 signal circuit. If an exhaust brake is installed, the exhaust brake is driven by the engine brake solenoid number 1 signal line. A 2-pin Weather Pack connector is located near the number 3 injector pass-through connector at the back of the engine. If an engine brake is installed, there will be a jumper harness from this connector to the engine brake pass-through connectors on the rocker lever housing. If an exhaust brake is installed, the OEM will connect one wire to the 2-pin Weather Pack connector for the exhaust brake relay.
Component Location
The engine brake solenoids are located under the valve cover. The engine brake solenoids are controlled through the engine harness from the ECM. The exhaust brake is an optional feature that is mounted in the exhaust system by the OEM.
Shop Talk
Possible causes of this fault code include a short circuit to ground in the engine harness, connector, or engine brake solenoids.
On-Board Diagnostics (OBD) Information:
- The ECM illuminates the appropriate amber or red lamp when the diagnostic runs and fails.
- The ECM turns OFF the appropriate fault lamp when the diagnostic runs and passes.
Refer to Troubleshooting Fault Code t05-2183
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