rpasetto Posted April 5 Share Posted April 5 ABS light on so I followed the blink code retrieval procedure in the Owner manual. I get 12 blinks followed by 2, then 12 followed by 1. If I have the correct manual and I'm interpreting it correctly the codes are: 12 1 There is a short between the release solenoid and supply voltage Left Rear Rear Axle Valve (page 34) 12 2 There is a short between the release solenoid and ground From the descriptions my first thought would be a bad ABS sensor on left rear. Then I looked at Pg 34 which appears to be about the connectors to the pressure modulator valve. (The wiring diagram I have doesn't tewll me where these connectors are located. ) What is most likely to have gone bad? Should I start at the wiring to the ABS sensor at the left rear... or at the PMV? ... or elsewhere in wiring harness? Link to comment Share on other sites More sharing options...
Ivan K Posted April 5 Share Posted April 5 I don't know what ABS system you have but I learned to trust my error codes, they were always right in my case. If it does not say wheel sensor, it's not it. If it says 'short', I unplug the cable and see if it remains or changes to 'open'. That tells me whether to check the cable or the part. Link to comment Share on other sites More sharing options...
Dr4Film Posted April 5 Share Posted April 5 My 06 Dynasty came to me with the ABS light on the dash. It is off generally for the first 5-10 miles or so than it pops on. There have been less than a handful of times where it hasn't come on at all during that segment of driving. It hasn't been high on my priority list to investigate but will have to do it some day. Not too worried about it as most of my driving is done where it really not needed. Link to comment Share on other sites More sharing options...
rpasetto Posted April 11 Author Share Posted April 11 Wondering if the BlinkCode chart I used was the correct one. Had a mechanic connect diagnostic computer today and he did not get the fault I posted above. Instead his showed a brake light switch fault so I'm thinking that I used th wrong chart. (???) My air system diagram shows there are two brake switches up front, see below. (Curiously only the brake lights on the upper taillights work.) Now I need to test to see which one... maybe replace both. (???) Link to comment Share on other sites More sharing options...
Tom Cherry Posted April 11 Share Posted April 11 YES... TEST each switch. The terminals are NOT critical....except to label one LEFT and the other RIGHT or label the switches A and B and then the harness/wires for each. OK....KNOWING how to test them and the pressures is critical. I did some searching of the posts. Here is one that might be the best... Read my comments. Read Frank McElroy's. ESPECIALLY FRANK... The switches are supposedly in Parallel and if SO, then unless the Tech had a super sniffer, how did he determine if one was bad. If one was bad, I THINK, then the other working... The Downstream signal would be the same... SO, I am NOT saying the tech is wrong... but from what I read....and that is from what I thought....so I did the searching... I am a little dubious of such. Unfortunately, sometimes folks get erronious INFO or misunderstand and don't complete their own troubleshooting and the "Throw $$ at it and it'll FIX ER" That is becoming an issue. Case in point. Member THOUGHT based on all he read....bad Board on his generator. Suggestions... BUY a new Board ($1.600) or a Refurbished. He ordered a returnable Refurbished ($800). NOPE Board was GOOD....and the "shifting error codes" pointed to issues with the Mechanical Gen Set (brushes and such). BUT, at least he didn't spend a fortune and is now diagnosing the CORRECT component(S) and then going to repair... Several of the folks have found that it is a SIMPLE issue. They pull the terminals and then replug and reseat a time or two. NEXT. Turn OFF BOTH House and Chassis Banks. Then disconnect the Positive from the Battery banks.....you want NO voltage. Cover up or disconnect the solar. Let it SIT for an hour or so. Then reconnect batteries... Then turn on the switches.... That has reset a lot of "funky" ones. The other questions come up.. Does your Cruise Control disengage as it should? As far as the lights.. I don't quite understand the UPPER ONES. Do you mean the TailLight Brake Switches as compared the SINGLE (called Cyclops or Center Brake or if you are a gear head...."Liddy Light". I would want to know the overall symptoms and then....go from there. Remember MOST of these switches are 0 - 5 PSI or so.... I'm having a bit of an issue wrapping my head around one switch is bad.... Let us know... https://www.monacoers.org/search/?q=switch abs&quick=1&type=forums_topic&updated_after=any&sortby=relevancy Link to comment Share on other sites More sharing options...
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