Here is a famous reported case on a proprietor who successfully obtained an injunction against a MC who blocked his access card and refuse him entry into the parking lot of the condo.

If you take the time to read it, it would be very knowledgeable and I think it can answer the questions posed by TS in this topic.

This case also states that even if the House Rules/Deed of Mutual Covenant provides that the MC can block the access card of owners who do not pay maintenance, it is illegal and void as it goes against the Strata Title Act. So the posts by some forummers above that if it is provided for in the House Rules, then it can be done - with respect, that argument is not sustainable in light of the decision in this case. 

To date, there is no judgment by a superior Court to overrule this case, so the law still stands despite it being a High Court decision.

John Denis De Silva v. Crescent Court Management Corporation [2006] 2 CLJ 605

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