Cutlass Ciera Cruiser V6-231 3.8L (1985)
Fig. 006 - Chart C-3 Canister Purge Valve.
1.
Checks to see if the solenoid is opened or closed. The solenoid is normally de-energized in this step, so it should be closed.
2.
Completes functional check by grounding test terminal. This should normally energize the solenoid and allow the vacuum to drop (purge on).
3.
Checks for open or grounded solenoid circuit.
4.
Checks to see if ECM control circuit or solenoid is at fault.
Solenoid coil resistance must measure more than 20 ohms. Less resistance will cause early failure of the ECM. Using an ohmmeter, check the
purge solenoid, coolant fan relay, or wastegate solenoid (E and G Series only) resistance before installing a replacement ECM, because they could
cause failure of the purge circuit.
