Opening your workshop…

Your circuit course

Each completed circuit unlocks the next. Replay an unlocked circuit for another fault or a better star rating.

Wiring diagram

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Your diagnosis

Which fault explains your readings?

Test notebook

Record a measurement from the bench.

    Simulation notes

    These are generic training circuits with illustrative bench values. Pedal and pressure signals use a loaded resistor model. The magnetic pickup has a 1kΩ coil and a 48-tooth target; AC amplitude depends on speed and gap. Hall output uses a 5V pull-up and a 30-tooth target, with a 50% duty-cycle average when rotating. The NTC uses a 2.5kΩ / 25°C, B3950 curve and 2.2kΩ ECU pull-up. Ohms excludes ECU electronics.

    For the two-wire sensors, unplugging separates the sensor pins from the harness. For the three-wire sensors, test points remain on the harness side. A real vehicle’s pinout, waveform, thresholds and values depend on its service information.

    Sensor principles: inductive pickup, Hall sensor, NTC and analog pressure.

    Driver states

    Magnetic wheel-speed pickup · generic training circuit

    Normal tests

    Educational bench values. Actual vehicle specifications vary.
    REPAIR VERIFIED

    Repair verified

    Diagnostic evidence confirmed.

    ★★★★★

    SCORE0
    TESTS0
    HINTS0

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