AD00 A10 032 | Genuine Cummins® WLS ACS Engine Control Module

1. Controls AC Synchronous Motors and Generators

Regulates speed, torque, and power output of AC motors
Ensures proper synchronization of AC electrical signals (phase, frequency, voltage)
Manages generator output to match system demands

2. Enables Hybrid & Electric Drive Systems

Works as a key controller in hybrid diesel-electric vehicles
Coordinates between engine, battery, and electric motor/generator components
Facilitates smooth transitions between electric and engine power

3. Ensures Stable and Efficient Power Generation

Maintains stable AC power for onboard equipment or external loads
Synchronizes generators to grid or other power sources if needed
Balances load and prevents electrical faults

4. Provides Communication and Diagnostics

Interfaces with other control modules (engine ECM, inverter, battery management)
Monitors system health and performance
Detects faults and triggers alerts for maintenance

5. Used in Specialized Equipment

Heavy-duty hybrid trucks
Mobile generators and power units
Industrial and construction equipment with electric power needs

• Loss of Electric Drive / Hybrid Functionality

  • Electric motor not engaging or powering the vehicle

  • No regenerative braking or reduced hybrid system performance

• Erratic or No AC Power Output

  • Generator or onboard AC equipment loses power or fluctuates

  • AC voltage or frequency unstable or out of specification

• Warning Lights or Fault Codes

  • Hybrid system warning or general powertrain malfunction light

  • Diagnostic trouble codes (DTCs) related to ACS module or motor control

  • Communication errors between WLS ACS and other modules (ECM, inverter)

• System Communication Failures

  • Loss of communication on CAN bus or control network

  • Intermittent or complete module failure detected by vehicle diagnostics

• Abnormal Motor Behavior

  • Motor runs unevenly, hesitates, or shuts off unexpectedly

  • Unusual noises or vibrations from the motor or generator

• Reduced Vehicle Performance

  • Loss of power, especially in hybrid mode

  • Poor acceleration or inability to maintain speed

• Electrical Faults

  • Blown fuses or tripped circuit breakers related to AC motor circuits

  • Overcurrent or overheating warnings