Al Colussi Posted October 6, 2012 Share Posted October 6, 2012 We have a 2005 Granite tri-axle dump with an EML light on. The code is a 3-5 which indicates "engine brake output problem" That makes sense since the jake only works on low when the light is on. When I turn the key off and restart, the light is off and stays off until the first time the jake activates on the hi setting, then the light comes on and it automatically works on the low setting, even though the switch is in the hi position. I would like to tackle this problem myself except I have no diagnostic information of any kind. Thanks for any help in advance!!! Quote Link to comment https://www.bigmacktrucks.com/topic/27682-eml-light-on/ Share on other sites More sharing options...
staxx Posted October 7, 2012 Share Posted October 7, 2012 Most likely exhaust brake solinoid is shorted internally happens with age remove valve cover and replace. Quote Link to comment https://www.bigmacktrucks.com/topic/27682-eml-light-on/#findComment-140676 Share on other sites More sharing options...
Mackpro Posted October 8, 2012 Share Posted October 8, 2012 As Staxx said, the #1 (front head) engine brake solenoid is the bad. You could pull the front valve cover and check the power (valve cover pass through) wire end and the ground wire end and make sure they didnt break off , which is a common occurance. If that is the case you could crimp on and new wire end and test drive. Quote Link to comment https://www.bigmacktrucks.com/topic/27682-eml-light-on/#findComment-140847 Share on other sites More sharing options...
Al Colussi Posted October 8, 2012 Author Share Posted October 8, 2012 Thank you both!!! Very helpful info, I will let you know how it turns out... Quote Link to comment https://www.bigmacktrucks.com/topic/27682-eml-light-on/#findComment-140871 Share on other sites More sharing options...
220cummins Posted October 11, 2012 Share Posted October 11, 2012 hey al tell joe and bell I said hi. I have to stop out soon, I have a couple manuals for the newer stuff that I got in a lot from ebay. Quote Link to comment https://www.bigmacktrucks.com/topic/27682-eml-light-on/#findComment-141265 Share on other sites More sharing options...
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