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The vtech assy at the back of the head consists of two parts- the spool valve (a linear solenoid) which has the two wire conn, and a pressure switch (the one wire connector). The valve opens on a COMMAND from the ecu, based on load and rpm, to operate the vtech. The switch sends a SIGNAL back to the ecu to confirm oil has flowed to the vtech rocker lock pins, and at sufficient pressure to operate v-tech. The ecu can fail to send the command and not set a cel, however if the ecu does send the command, and does not recieve a pressure signal back it has to set a cel (in a nominal system).And yes, coke deposits or other low mechanical pressire problems can cause that.Normally, nsxtasy would be correct but my calender is full at the moment. I could be available however the weekend of July 24, IF you are close to Hockenhiem :biggrin: :biggrin: :biggrin:MB
The vtech assy at the back of the head consists of two parts- the spool valve (a linear solenoid) which has the two wire conn, and a pressure switch (the one wire connector). The valve opens on a COMMAND from the ecu, based on load and rpm, to operate the vtech. The switch sends a SIGNAL back to the ecu to confirm oil has flowed to the vtech rocker lock pins, and at sufficient pressure to operate v-tech. The ecu can fail to send the command and not set a cel, however if the ecu does send the command, and does not recieve a pressure signal back it has to set a cel (in a nominal system).
And yes, coke deposits or other low mechanical pressire problems can cause that.
Normally, nsxtasy would be correct but my calender is full at the moment. I could be available however the weekend of July 24, IF you are close to Hockenhiem :biggrin: :biggrin: :biggrin:
MB
