XC 90 - Rear Brake Shunt/Relay
#1
#2
Thanks for the swift reply! That diagram doesn't match my 2005, so I did some more digging and found the wiring diagram for the 2005 XC90...unfortunately, it no longer has a brake relay of any sort on the REM. So at this point, I'm still in the dark as to why my left and right brake lights remain on when the ignition is turned off. Disconnecting the brake pedal swith didn't work either. Anybody else have this problem in a 2005 model?
#4
Link to diagram
I am going to be replacing my relay tomorrow as both of my lights are out and the third light works. The bulbs were replaced and still do not work. I know this post is a bit old but I found a link to the diagram and you can pick the year and make of your Volvo:
http://www.matthewsvolvosite.com/volvo-wiring-diagrams
Take care.
http://www.matthewsvolvosite.com/volvo-wiring-diagrams
Take care.
#5
#6
Malfunctioning brake lights
I am having same trouble in my 2001 S-60. LED window brake strip works fine but both L/R brake lamps are out. I have swapped relays and shunts without any change in symptoms.
I have also had a very intermittent problem where rear parking lights stay latched ON after the car is shut off. Pulling out relay RMI5 and re-inserting it clears the malfunction.
I think these two errors are likely related, but not sure where. I will try the lamps, to eliminate gremlins, but the original ones were apparently OK before.
What does a shunt do? When I check with ohmmeter they read zero ohms across all terminals. The schematic shows there is a resistor network across certain terminals but to my meter the unit's terminals all appear joined as one, electrically. Tested 3 shunts, all with same properties.
I have also had a very intermittent problem where rear parking lights stay latched ON after the car is shut off. Pulling out relay RMI5 and re-inserting it clears the malfunction.
I think these two errors are likely related, but not sure where. I will try the lamps, to eliminate gremlins, but the original ones were apparently OK before.
What does a shunt do? When I check with ohmmeter they read zero ohms across all terminals. The schematic shows there is a resistor network across certain terminals but to my meter the unit's terminals all appear joined as one, electrically. Tested 3 shunts, all with same properties.
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PaddyG
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