Simulate. Activate. Diagnose

Modern vehicles rely on dozens of sensors and actuators whose signals are critical to the operation of the engine, transmission, emissions systems and vehicle safety functions.

The new HU31035 Diagnostic Signal Generator Pro generates and simulates these signals, allowing technicians to quickly identify the true source of a fault.

Unlike a conventional sensor tester, the HU31035 reproduces the signals normally sent to the ECU or directly to an actuator. This allows the technician to determine whether the fault originates from the sensor, the wiring harness, the ECU or the controlled component itself.

Main Applications:
Sensor Diagnostics
• Manifold Absolute Pressure (MAP) sensors
• Mass Air Flow (MAF) sensors
• Fuel rail pressure sensors
• Exhaust sensors
• Anti-lock Braking System (ABS) wheel speed sensors
• Camshaft and crankshaft position sensors
• Oxygen (Lambda) sensors
• Negative Temperature Coefficient (NTC) sensors
• Positive Temperature Coefficient (PTC) sensors
Actuator Testing and Control
• Gasoline injectors
• Diesel injectors
• AdBlue (DEF) injectors
• Solenoid valves
• Solenoids
• Pulse Width Modulation (PWM) actuators
• Swirl flaps
• Electronic throttle bodies
• Electronically controlled A/C compressors
• Low-power electric motors

Repair Validation:
After repairing a wiring harness or replacing a component, the HU31035 can reproduce
real operating signals to verify that the circuit is functioning correctly before the vehicle
is returned to the customer.

Built-in Functions:
• Adjustable voltage generator (0.1–12 V)
• Variable resistance simulation (100 Ω–20 kΩ)
• Negative Temperature Coefficient (NTC) Simulation
• Positive Temperature Coefficient (PTC) Simulation
• Square wave signal generator
• Sine wave signal generator
• Adjustable Pulse Width Modula2on (PWM) Signal Genera2on
• AdBlue (DEF) injector driver
• Power output up to 4 A
• Fast testing of actuators and solenoid valves

Workshop Benefits:
• Reduce diagnostic time
Inject a known, reliable signal directly into the circuit and instantly verify the ECU's
or actuator's response.
• Eliminate unnecessary parts replacement
Quickly determine whether the fault is caused by the sensor, the wiring harness,
the ECU or the controlled component.
• One tool for countless applications
Replace multiple sensor simulators, signal generators and actuator test tools with
one compact professional device.