Jump to content

HEVAC


Simon_CSK
 Share

Recommended Posts

5 hours ago, Simon_CSK said:

... have 2 HEVAC contollers that don't illuminate ...

Sorry if you think I'm being cheeky, but the illumination is via a single 12v bulb; have you removed it and checked if it works? (Times two, obviously).

5 hours ago, Simon_CSK said:

... . Can I test them off the car? Are they coded to the car?

Don't know without studying the ETM (which I don't propose to do), and No.

Regards.

Link to comment
Share on other sites

OK.   I'm still flying by memory.

The two failure modes I recall were total lack of display, equals bulb, and failure of individual elements, which was slight corrosion on the edge connectors of the display panel itself, cured by cleaning with a 'pen' containing tightly packed  'glass' bristles, and or physical packing of the edge connectors in their slots (slice of thin card?).

As the HEVAC display IS the HEVAC control, there is no separate ECU, I'd want to check the power supply via the multipin plugs, and I think I'd do this via a 12v supply, whether in the car of on the bench, rather than resistance checks. Obviously one has to be a bit cany, not to thrust 12v on pins that are not designed to accept it.

The other aspect of this unit that I recall was that it has no fault memory. If it showed an error then when power cycled it started again from scratch, working OK until it hit the fault condition. In my eyes this makes it easier to fault that the SAS? system (airbags etc).

Regards.

Link to comment
Share on other sites

  • 3 weeks later...
On 4/28/2020 at 6:24 PM, Simon_CSK said:

The HEVAC is now working but there isn't any display so will order a bulb kit for it.

What did you do to fix it? Bad connection somewhere?

Link to comment
Share on other sites

Just now, Escape said:

What did you do to fix it? Bad connection somewhere?

Nothing it just started working. When I tried the second unit with new bulbs that one too was working. Now am putting the dash back together. Hopefully by the end of the week the car will be running perfectly and on LPG to boot.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy