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Actuator tests on FCA control units (engine, BCM and other modules)

Fiat/FCA Interface Classic Diagnostics Basic ⏱ 10-30 min 8 steps

The actuator test drives the components of a system individually so you can tell whether the fault is electrical or mechanical. It lets you, for example, run the oil pump actuator on its own without interfering with the other actuators. The software covers virtually every testable actuator on FCA vehicles, including those on the body computer.

Required licences

Hardware / cables

  • AVDI
⚠ WarningAlways let the actuator test finish before leaving the function: interrupting a test in progress leaves the component in an undefined state.

Procedure

  1. Connect the AVDI to the OBDII socket, chock the vehicle's wheels and turn the ignition to ON.
  2. Start the FCA software, select the vehicle and enter the control unit that drives the component you want to test (for example the engine ECU, or the body control module for body actuators).
  3. Open the unit's actuator function ("Actuators"): the list of drivable actuators appears.
  4. Select the actuator you want to test from the list.
  5. Press the start button ("Start") to run the test.
  6. Check the component's response on the vehicle (noise, movement, relay click, warning light) while the test is running.
  7. Wait for the test to finish before leaving the function or selecting another actuator.
  8. If the component does not respond to the command, the fault is in the component or its wiring; if it responds correctly, move your search to the sensors or the control logic.

Reference screenshots

Actuator tests on FCA control units (engine, BCM and other modules) — 1Actuator tests on FCA control units (engine, BCM and other modules) — 2
Source: Manuale FCA Fiat/Alfa Romeo/Lancia (interfaccia classica), cap. 3.5 (p.12-13) · ⏱ estimated time 10-30 min
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