Cummins ISB6.7 CM2350 (2013-17) Fault Code: 176 PID: SPN: 3464 FMI: 4 Electronic Throttle Control Actuator Driver Circuit- Voltage Below Normal or Shorted to Low Source

Cummins ISB6.7 CM2350 (2013-17) Fault Code: 176 PID: SPN: 3464 FMI: 4 Electronic Throttle Control Actuator Driver Circuit- Voltage Below Normal or Shorted to Low Source

Circuit Description
The engine control module (ECM) controls the engine intake air throttle actuator. The ECM can open and close the throttle based on the operating condtions in order to regulate air flow to the engine.

Component Location
The engine intake air throttle actuator is mounted in the piping between the charge air cooler and intake manifold.

Conditions for Running the Diagnostics
This diagnostic runs when the engine intake air throttle actuator is being commanded ON.

Conditions for Setting the Fault Codes
The Engine Control Module (ECM) detected the engine intake air throttle actuator signal is shorted to ground when the actuator is commanded ON.

Action Taken When the Fault Code is Active
The ECM illuminates the red STOP ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.

Engine intake air throttle actuation will be disabled. The engine intake air throttle will default to the open position.

1)Exhaust Gas Recirculation (EGR) valve operation will be disabled.
2)Engine torque will be reduced if the engine is operated for an extended period of time with this fault active.

Conditions for Clearing the Fault Code
1)To validate the repair, start the engine and let it idle for 5 minutes. After 5 minutes, shut OFF the engine, perform a key cycle, and leave the key in the ON position for 1 minute.
2)The ECM will turn off the red STOP ENGINE lamp immediately after the diagnostic runs and passes.
3)For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
4)The Reset All Faults command in INSITE? electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Possible causes:
1) A short circuit to ground in the engine harness
2) A malfunctioning engine intake air throttle actuator