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P38A 2.5 DT srs fault

Discussion in 'Range Rover' started by RangeRoller dt, Apr 19, 2020.

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  1. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    The dash is half stripped already, battery being topped up so good time to investigate my srs fault on dash.

    I understand ideally I need a Nanocom to read what the problem is and go from there BUT
    MY1995 DT only has an airbag in the steering wheel +1 above glovebox, plus 2 sensors atop the front bumper. They are all the yellow ones with yellow trunking.
    I’ve had battery off for a while so there’s no harm in trying the simple fixes first.

    The infamous A-pillar connection near the inertia switch by the drivers foot
    877E4A6E-4966-4B73-BE27-28874455885F.jpeg

    There is a connection above this behind the panel C9974CDC-CCF0-4969-B5DC-DFE08CCE5242.jpeg
    with some sort of box next to it? :confused: 52FBEA38-E4D9-4F43-999B-67B6F4050967.jpeg


    Passenger side is only one trunk coming up to a single connector behind the glovebox that goes to the unit 4A97A85C-4406-49AC-9924-B47DF9975693.jpeg
     
  2. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    Had the dash binnacle gauge thing out there’s only four screws and two connectors. The bulbs are labelled in little writing so you can tell which is which 9CFC5DDA-F924-46F5-B56C-F7D7D9973C5C.jpeg

    You can see the writing if you zoom in but these are SRS bulbs 1 and 2 53E87D90-ECCE-458F-A00B-A0C9D216BF89.jpeg
     
  3. Rubberknees

    Rubberknees Well-Known Member

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    When I changed my driver side blend motor srs light came on. There is a connector under dash, took apart sprayed with contact cleaner and OK afterwards
     
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  4. Grrrrrr

    Grrrrrr Technician, Bodgit & Scarper Ltd

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    I would take out those 2 bulbs, clean the board connection very gently and the copper tangs in the bulb capsules and bend them out very slightly. Check both bulbs are functioning correctly.

    Unfortunately you'll probably need diag to clear the fault.
     
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  5. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    How do I check the bulbs?

    Is that the one in pic#2 or have I missed one?
     
  6. wammers

    wammers STILL BREATHING. Donater

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    Check for continuity.
     
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  7. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    That sounds like DVM speak

    have ordered one of these
    37A2D2A6-6B09-457B-8284-7F0ACBD61916.jpeg
    Let’s hope it comes with instructions :)
     
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  8. kermit_rr

    kermit_rr Well-Known Member

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    you could just swap with other known good lamps from the dash. my dash was one short so i borrowed one of the less used ones, i forget which one. might have even been the glow plug light which i dont care about
     
  9. Datatek

    Datatek Well-Known Member

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    2 bits of wire under the bulb contacts with other ends placed on the battery terminals does the job
     
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  10. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    Substitution would be my usual method but I have my battery and instrument cluster here now so will find some wire.

    There’s ones in service/trs(Tc?)/cruise c that I shouldn’t need

    DVM should come in handy and about time I learned to use one
     
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  11. Grrrrrr

    Grrrrrr Technician, Bodgit & Scarper Ltd

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    That's near enough what I did. A DVM is an essential bit of kit though.
     
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  12. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    EE25E313-FD98-450B-BC20-293573B20926.jpeg All bulbs (everyone in there) work but connection is harder to get on srs ones so will clean and swap around with cruise + traction control as I don’t have it
    Could hear Grrrr’s whisper ... ‘bend the contacts ever so slightly...’

    What to DVM next week now?? Lol
     
    Last edited: Apr 20, 2020
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  13. kermit_rr

    kermit_rr Well-Known Member

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    The list is limitless! You'll find a whole pile of things to test that up until now didn't need to be tested
     
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  14. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    Well you know how to use one so time for you to teach me something for a change :p

    From owners manual :
    Fuse 7 - under drivers seat - 10A
    Fuse 23 - engine compartment - 10A

    Both SRS related.
    Il check these
     
    Last edited: Apr 21, 2020
  15. kermit_rr

    kermit_rr Well-Known Member

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    If only you could test the amp rating of a fuse!
    I've got a bag full but no idea what size they are
     
  16. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    Will continuity not work on a fuse?
    I have spare ones of them anyhow
     
  17. kermit_rr

    kermit_rr Well-Known Member

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    Yes you'll have a continuity setting, most general ones do volts, dc and ac, ohms, continuity. Some do temperature, some do diode checks too
     
  18. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    The expensive ones do temperature. This one says it has a continuity beeper so guess it has a settting
     
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  19. Rubberknees

    Rubberknees Well-Known Member

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    That looks like it was very fiddly to get fingers round it to separate. Make sure none of the cables get trapped putting everything back
     
  20. kermit_rr

    kermit_rr Well-Known Member

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    If you don't mind me asking, how much did you pay? I bought an ebay special last year as the leads on my old one were knackered.
    Had a look inside and out looked exceedingly cheap, certainly wouldn't use it on mains stuff! The cables fell apart after a few days :(
     
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