Output Diagnostic Test Mode (Circuit Actuation Tests)

The Circuit Actuation Test Mode checks for proper operation of output circuits or devices the Powertrain Control Module (PCM) may not internally recognize. The PCM attempts to activate these outputs and allow an observer to verify proper operation. Most of the tests provide an audible or visual indication of device operation (click of relay contacts, fuel spray, etc.). Except for intermittent conditions, if a device functions properly during testing, assume the device, its associated wiring, and driver circuit work correctly.

OBTAINING CIRCUIT ACTUATION TEST
Connect the DRB or scan tool to the vehicle and access the Actuators screen.

ACTUATOR TEST REFERENCE TABLE

Actuator Test Reference Table (Part 1):

Actuator Test Reference Table (Part 2):

NOTE: If an injector operates properly, it releases fuel when activated by the PCM. Prolonged injector actuation, particularly on vehicles equipped with multi-port systems may cause excessive amounts of fuel to be deposited in the intake manifold. Hydrostatic lock may result.