Repair manual

Engine Mechanicals
11
Activation of the Cam
Adjustment Actuators
The Camshaft Adjustment Actuators are activated by
the ECM, which provides a ground signal. Voltage to
the actuators is supplied by Motronic Engine Control
Module Power Supply Relay J271. The system is ready for
operation above a coolant temperature of 14°F (–10°C).
When the engine is started, the larger contour lobes are
in position. Immediately after engine start, the system
changes over to the smaller contour lobes.
When the engine stops, the AVS switches back to the
large contour cam.
The maximum power input per actuator is 3 amperes.
Legend
F366 – F373 Cam Adjustment Actuators
J271 Motronic Engine Control Module Power Supply Relay
J623 Engine Control Module (ECM)
Actuator Activation
End of Actuator Activation
Return Signal on Correct Configuration
Activation of a Cam Adjustment Actuator
Battery Voltage [U
bat
]
Adjustment Travel