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- Path: sparky!uunet!mcsun!uknet!axion!bcollins
- From: bcollins@axion.bt.co.uk (Bill Collins)
- Newsgroups: rec.autos.tech
- Subject: Re: Power Locks
- Message-ID: <1992Sep11.113338@axion.bt.co.uk>
- Date: 11 Sep 92 10:33:38 GMT
- References: <D2150040.d7fq21@destiny.howtek.UUCP>
- Sender: news@axion.bt.co.uk
- Reply-To: bcollins@axion.bt.co.uk (Bill Collins)
- Organization: British Telecom Research Labs
- Lines: 40
-
-
- In article <D2150040.d7fq21@destiny.howtek.UUCP>, paul@howtek.UUCP (Paul Rothenberg) writes:
- |> Here's a strange one that started just a few days ago:
- |>
- |> I have an '85 S-10 Blazer w/ power locks. The passenger door lock
- |> cannot be unlocked using power central locking. I can power lock the
- |> door with no problem. The driver side door is OK both ways.
- |>
- |> Is the problem just in wiring, or am I in for something bigger? Any
- |> help is appreciated.
-
-
- I had a similar problem recently, but in reverse: I could unlock all
- doors on my car including the boot (trunk), but the central locking
- would not lock the boot.
-
- I initially checked out the wiring, but it was the actual motor unit
- in the boot which was faulty. Replacing that cured the problem.
-
- You need to gain access to the motor unit to check whether it is
- getting the volts it needs (may involve stripping trim panels off
- the door). Once there, you can put a voltmeter across it to see what
- happens when you try to lock or unlock it. In the case of my car
- (a Vauxhall Cavalier), it sends a short pulse of power to the motor, so
- you have to watch for that. The polarity was reversed to reverse the
- operation of the motor (ie: "lock" or "unlock"). If it is getting the
- right pulse in both cases, then it must(?) be the motor unit.
-
- Hope this helps.
-
-
- Regards,
- Bill Collins
-
- +-------------------------------------------------------------+
- | Tortoise : Software Development Division, BT Laboratories, |
- | Martlesham Heath, IPSWICH, Suffolk, IP5 7RE, UK |
- | Hare : bcollins@axion.bt.co.uk +44 473 642760 |
- | Disclaimer: It's MY foot in MY mouth ! |
- +-------------------------------------------------------------+
-