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SRS light fix?

Old Jun 21, 2018 | 01:17 AM
  #11  
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I recollect having this code 5 years ago. I changed the rotary coupler and the problem went away.
 
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Old Jun 21, 2018 | 01:22 PM
  #12  
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Originally Posted by acg
I recollect having this code 5 years ago. I changed the rotary coupler and the problem went away.
I’m going to just give that a go and change the coupler then, I went through and cleaned and looked for any problems with the connectors and wiring last night and couldn’t find anything. I’ll order a new one today and keep everyone posted if it fixed the problem or not. Maybe it’ll fix my volume down button too, I’ve been wanting to fix that since I bought my Discovery.
 
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Old Jun 22, 2018 | 04:58 AM
  #13  
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Why not first test continuity all the way from the airbag connector to the DCU? You can isolate the rotary coupler and determine whether or not it is at fault with a simple multimeter. If it's good, test continuity back to the DCU. Again, in the case of my truck the fault was a short in the connector that plugs into the DCU. Diagnose, diagnose, diagnose. Good luck.
 
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Old Jun 22, 2018 | 11:28 AM
  #14  
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Originally Posted by mln01
Why not first test continuity all the way from the airbag connector to the DCU? You can isolate the rotary coupler and determine whether or not it is at fault with a simple multimeter. If it's good, test continuity back to the DCU. Again, in the case of my truck the fault was a short in the connector that plugs into the DCU. Diagnose, diagnose, diagnose. Good luck.

Ill check continuity this weekend, if its clear from the driver air bag to the DCU should I be checking every single plug? (under the seats, behind the dash, etc..)
Also the code is for the warning lamp, should I bother checking continuity from the warning lamp to the DCU?
 
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Old Jun 22, 2018 | 06:51 PM
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I apologize; I completely misread what your diagnostic tool was saying. According to the circuit diagrams, there's only one connector between the DCU and the light in the instrument pack. Do you have copies of the RAVE Electrical Circuits and Electrical Library PDFs?

But my question is this - if the light isn't working, what prompted you to look for a code? Did you notice that the SRS light wasn't coming on during the self test when the engine is started?
 
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Old Jun 22, 2018 | 10:56 PM
  #16  
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Originally Posted by mln01
I apologize; I completely misread what your diagnostic tool was saying. According to the circuit diagrams, there's only one connector between the DCU and the light in the instrument pack. Do you have copies of the RAVE Electrical Circuits and Electrical Library PDFs?

But my question is this - if the light isn't working, what prompted you to look for a code? Did you notice that the SRS light wasn't coming on during the self test when the engine is started?
No worries, I do have a copy of the RAVE Electrical circuits. I didn’t see a connector for the warning light but I’ll check the diagram again and refer back to it.

The thing is, the light is working correctly so I don’t know why I’m getting the code for the warning light. It doesn’t make any sense. The light works fine for the self test and stays on after the engine stars with the stored fault code. I tried clearing the code and it comes back immediately. I don’t know how I’m getting a fault for something that appears to be working.
 
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Old Jun 23, 2018 | 10:44 AM
  #17  
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Yeah, I agree. That's a headscratcher.
 
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Old Jun 23, 2018 | 10:57 AM
  #18  
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Originally Posted by DKPhoto


No worries, I do have a copy of the RAVE Electrical circuits. I didn’t see a connector for the warning light but I’ll check the diagram again and refer back to it.

The thing is, the light is working correctly so I don’t know why I’m getting the code for the warning light. It doesn’t make any sense. The light works fine for the self test and stays on after the engine stars with the stored fault code. I tried clearing the code and it comes back immediately. I don’t know how I’m getting a fault for something that appears to be working.
if the light is on there is a problem.....
As far as continuity tests on airbag systems, I would advise against unless you have absolute certainty which circuits on a wiring diagram you are checking "continuity" on.....disconnect battrry and let discharge for 10 minutes, etc....
Also continuity tests are kinda unreliable because you can have continuity with just one strand of wire....
Best check of wiring is to load test...
I have not lookedat the Rave regarding this code, but I assume they probably break down the circuit and have some sort of airbag poad tool t8 test the circuit
Judging from your volume button not working, my best internet guess would point to the clock spring..
I'm interested to find out if thats the case. ..
 
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Old Jun 23, 2018 | 11:01 AM
  #19  
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Here are screenshots. The circuit diagram shows the circuit going through connector C0047, and the electrical library shows C0047 among others on the left-hand side of the steering column. From there it goes to C0233, which is one of the two big connectors at the back of the instrument cluster.

But like you, I don't understand why you get a code for a light circuit when the light circuit clearly works. Perhaps there's an electrical wizard reading this who will have an idea or two.
 
Attached Thumbnails SRS light fix?-srs-light-circuit.png   SRS light fix?-connector-c0047.png  
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Old Jun 23, 2018 | 11:05 AM
  #20  
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Originally Posted by razorkill12
if the light is on there is a problem.....
As far as continuity tests on airbag systems, I would advise against unless you have absolute certainty which circuits on a wiring diagram you are checking "continuity" on.....disconnect battrry and let discharge for 10 minutes, etc....
Also continuity tests are kinda unreliable because you can have continuity with just one strand of wire....
Best check of wiring is to load test...
I have not lookedat the Rave regarding this code, but I assume they probably break down the circuit and have some sort of airbag poad tool t8 test the circuit
Judging from your volume button not working, my best internet guess would point to the clock spring..
I'm interested to find out if thats the case. ..
Clock spring is on the way, should be delivered some time this week. Hopefully that will fix the problem. If not seems like Im going to have a fun time trying to get down to the problem of this.
 
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