3837761C92 | Genuine International® Electronic Remote Power Control Module

International medium- and heavy-duty trucks, including:

• International DuraStar 4300 (confirmed used part listing)
• International DuraStar 4400 (confirmed from a 2016 truck)
• International LoneStar (same ERPCM family used alongside related chassis control modules on some models)

It may also be used in other Navistar trucks equipped with multiplex electrical systems, such as:

• International WorkStar
• International TranStar
• International ProStar
• Certain IC Bus models

• Remote power control
  • Turn equipment on or off from a control panel, computer, or mobile device.
  • Useful when equipment is far away or difficult to access.
• Centralized power management
  • Control multiple electrical devices from a single location.
  • For example, an operator can switch lights, pumps, fans, and motors from one dashboard.
• Equipment protection
  • Detects overloads, short circuits, or overheating.
  • Automatically disconnects power to prevent damage to equipment or wiring.
• Reduced wiring and weight
  • Instead of running large power cables to every switch, only low-power control signals need to travel to the ERPCM.
  • This simplifies installation and reduces the amount of wiring, especially in vehicles and aircraft.
• Improved reliability
  • Electronic switching is often more reliable than traditional mechanical relays because there are fewer moving parts.
  • Many modules also perform self-diagnostics and report faults.
• Automation
  • Can automatically switch devices based on programmed conditions, such as:
    • Battery voltage
    • Temperature
    • Time schedules
    • Sensor inputs
    • Commands from a control system

• Electrical devices won't turn on
  • Lights, pumps, fans, or other equipment receive no power even though the switch or control panel indicates they should.
• Electrical devices won't turn off
  • A circuit stays energized continuously because the module's switching component is stuck on.
• Intermittent operation
  • Equipment works sometimes and fails at other times.
  • Devices may flicker, cycle on and off, or stop working unexpectedly.
• Multiple electrical systems fail at once
  • Since one ERPCM often controls many circuits, several accessories may stop working simultaneously.
• Repeated circuit shutdowns
  • The module may incorrectly detect an overload and shut off power even when the electrical load is normal.
• Warning lights or fault codes
  • Modern systems often store diagnostic trouble codes (DTCs) or display fault messages related to the power control module.
• Communication problems
  • If the module communicates over a network (such as a CAN bus), other controllers may report that they cannot communicate with it.
• Burning smell or visible damage
  • Overheating components, burnt connectors, melted plastic, or corrosion around the module are signs of failure.
• No response to remote commands
  • Commands from the dashboard, control panel, or computer have no effect even though the control switch itself is working.