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master warning light .... HELP

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Old May 13, 2016 | 02:21 AM
  #1  
m3vs911's Avatar
m3vs911
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From: Hong Kong
Default master warning light .... HELP

My master warning light doesn't lit after the engine is fired.
It does lit when the key is in 2 position (suppose all dash lights should on anyway ) and the engine off.

when the engine is fired up and it goes away immediately, even when the parking brake has not been released.

Tried to remove the connection of the fan belt sensor to trigger it, it doesn't lit.

I'm sure the bulb itself is fine , but any clue or direction for me to follow up?

thanks!
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Old May 13, 2016 | 03:24 AM
  #2  
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ToreB
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From: Oslo, Norway
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You are describing a normal behaviour of the central warning light. It shall extinguish after engine start.
Does your park brake warning light ignite when you activate the brake handle? If not, I guess you have a faulty park brake switch. It is known to become detached in the brake handle mechanism.

As far as I remember is the belt warning switch a normally open switch. Disconnecting it will not trigger any warning. Closing the switch (or shorting the two terminals in the switch connector) will trigger the warning. Be sure to keep the switch closed for some time before the warning starts.

Cheers,
Tore
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Old May 13, 2016 | 04:12 AM
  #3  
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m3vs911
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From: Hong Kong
Default

but it should lit when the roof didn't shut properly or the park brake lever is pulled... am i correct?

additional info,
the bulb in the cancel warning button is always on , is it normal?


Originally Posted by ToreB
You are describing a normal behaviour of the central warning light. It shall extinguish after engine start.
Does your park brake warning light ignite when you activate the brake handle? If not, I guess you have a faulty park brake switch. It is known to become detached in the brake handle mechanism.

As far as I remember is the belt warning switch a normally open switch. Disconnecting it will not trigger any warning. Closing the switch (or shorting the two terminals in the switch connector) will trigger the warning. Be sure to keep the switch closed for some time before the warning starts.

Cheers,
Tore
Reply
Old May 18, 2016 | 10:34 AM
  #4  
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HalV
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Joined: Jun 2008
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From: MN
Default

Originally Posted by m3vs911
but it should lit when the roof didn't shut properly or the park brake lever is pulled... am i correct?

additional info,
the bulb in the cancel warning button is always on , is it normal?
The warning light should be on when the parking brake is on (so both the parking brake and warning light are on).
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