Volvo Workshop Manuals
XC90 FWD L6-3.2L VIN 98 B6324S (2007)
Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Description and Operation > System Overview > Page 2018
1. Oil filter reset valve camshaft.
The camshaft reset valve controls the oil flow to the continuous variable valve timing (CVVT) unit. The engine control module (ECM) uses a pulse
Control occurs according to the following during deployment/return of the camshaft.
A: Inlet camshaft
Oil pressure from the lubrication system (1) of the engine.
The oil passes the filter for the camshaft reset valve (2) and then on to the reset valve (3).
The engine control module (ECM) controls the oil flow to one of the CVVT unit chambers (4) depending on whether it is to be deployed/returned
The reset valve is controlled by the engine control module (ECM) by high frequency, switching for deployment and return. This results in rapid and
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