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Handbrake dash warning light won't go on Topic is solved

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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harojs
Posts: 5
Joined: 22 September 2011
Year and Model: 850, 1996
Location: Seattle, WA

Handbrake dash warning light won't go on

Post by harojs »

1996 850 Wagon

- BRAKE bulb DOES light during pre engine start cluster bulb test
- BRAKE bulb DOES light when brake fluid level sensor removed
- BRAKE bulb DOES NOT light when handbrake engaged
- Handbrake continuity switch checks OK
- Grounding Handbrake yellow wire to chassis DOES NOT light bulb

Any ideas? Seen this before?

I can't find a good circuit diagram to chase the yellow wire route up from handbrake switch

Is there a computer reset required somehow?

-John
Bellevue, WA
[email protected]

p.s. - sorry just saw there was a previous post on this topic - oh well, maybe that will help get noticed

harojs
Posts: 5
Joined: 22 September 2011
Year and Model: 850, 1996
Location: Seattle, WA

Post by harojs »

OK - FIXED

There are TWO break warning bulbs in the dash - BRAKE and PARKING BRAKE

I had assumed the BRAKE bulb was for both the break fluid level and the parking brake, and I started down the path to debug the switch on the hand break and got wrapped around the axle.

Since the PARKING BRAKE was not lighting up on start check, I didn't see it light up, and so did not remember there are two bulbs.

Hopefully, someone will find this post if it happens to them.

Thanks for watching - John.

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