ABS relay questions
#1
Three Wheelin'
Thread Starter
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my my abs relay is on the fritz. I pulled it out. I don't see any obvious failure, which pins activate the relay?
![](https://cimg8.ibsrv.net/gimg/rennlist.com-vbulletin/2000x1504/20201028_192603_30928bf030dc5858d084a9b63a2e43898e8e7f3e.jpg)
#2
Three Wheelin'
Thread Starter
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Should be positive 31 and ground 15 correct?
#3
Instructor
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30 Line from battery positive terminal
31 Return wire from battery Negative or ground (direct)
15 Switched positive after battery (ignition-switch output)
87 Input
this is Bosch own designation of numbers
31 Return wire from battery Negative or ground (direct)
15 Switched positive after battery (ignition-switch output)
87 Input
this is Bosch own designation of numbers
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#4
Three Wheelin'
Thread Starter
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I thought it looks like 31 and 15 go through the coil windings on the diagram.
#5
Three Wheelin'
Thread Starter
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so if so positive on 15 and negative on 31 should activate the relay?
#6
Instructor
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So when you turn ignition on the relay will be activated and pull and give power to 87 that are given signal /12Volt to xxx
Like the #30 + gets connected to #87 to deliver +
Like the #30 + gets connected to #87 to deliver +
Last edited by P356GT; 10-29-2020 at 12:35 PM.
#7
Three Wheelin'
Thread Starter
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how do these connections look?
![](https://cimg2.ibsrv.net/gimg/rennlist.com-vbulletin/2000x1504/20201028_193502_9b9056554a4966190bfc7a14a17c2924b5a182e5.jpg)