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Old 01-04-2016, 11:48 AM
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Injector Relay location (2003 e53 3.0i MT)

Having trouble identifying the injector relay switch on my 2003 E53 3.0i MT truck.

realoem.com suggests this location:
https://dl.dropboxusercontent.com/u/...803000_iOS.jpg

My truck has this configuration:
https://dl.dropboxusercontent.com/u/...903190_iOS.jpg
https://dl.dropboxusercontent.com/u/...923521_iOS.jpg

Which relay is the injector relay? The two diagrams are not exactly the same...

Thanks in advance!
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2006 X5 3.0i 6MT
2004 ///M3 Coupe 6MT
1997 ///M3 Coupe 5MT
2015 X3 2.8i xDrive

Last edited by Rookie48; 01-05-2016 at 08:01 PM.
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Old 01-05-2016, 08:03 PM
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Bump.
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2006 X5 3.0i 6MT
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1997 ///M3 Coupe 5MT
2015 X3 2.8i xDrive
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Old 01-05-2016, 09:23 PM
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Injectors are fired by the DME and does not utilize a relay. There is always 12 volts power at the injectors and the DME sends a grounding signal to the injectors to fire the injectors. Perhaps your problem is with a bad ground.
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Old 01-05-2016, 09:36 PM
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Across all 6 injectors?


2003 X5 3.0i Sport MT
2004 M3 Coupe
1997 M3 Coupe
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2006 X5 3.0i 6MT
2004 ///M3 Coupe 6MT
1997 ///M3 Coupe 5MT
2015 X3 2.8i xDrive
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Old 01-05-2016, 10:08 PM
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There is normally a common ground used by the DME to ground all the injectors. You can look at a wiring diagram to locate the common ground that the DME is using to ground each injector.
__________________
2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD
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