p38 4.6 airbag srs light,

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mac36

New Member
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hi all

this is my first post on here but not my first landy,in all iv had about 12,,from 1971 number 51 rangie,,defender.and8 classics now on first p38,never fancied a disco,its a 1995 4-6 hse project,,had various faults so far but sorted them,,doors not locking..sunroof not setting,abs light,,and other niggles

my reason for post is i have a srs airbag fault had it plugged in at local electrical specialist garage and they are good allways helped in past,they tried 3 machines,snapon,and others and they wont communicate with airbag ecu can anyone help please,,he advised as mine is one of the first p38s needs to be plugged in to T4 to be read properly and landrover garage can anyone please explain if this is true or can any other reset machine work to i can sort the fault ..thanks in advance .

mac
 
mac36 said:
hi all

this is my first post on here but not my first landy,in all iv had about 12,,from 1971 number 51 rangie,,defender.and8 classics now on first p38,never fancied a disco,its a 1995 4-6 hse project,,had various faults so far but sorted them,,doors not locking..sunroof not setting,abs light,,and other niggles

my reason for post is i have a srs airbag fault had it plugged in at local electrical specialist garage and they are good allways helped in past,they tried 3 machines,snapon,and others and they wont communicate with airbag ecu can anyone help please,,he advised as mine is one of the first p38s needs to be plugged in to T4 to be read properly and landrover garage can anyone please explain if this is true or can any other reset machine work to i can sort the fault ..thanks in advance .

mac
Click to expand...

Do a little search on the forum and you will find almost everything. (Not the google but underneath)
Quite a few diagnostics can check/reset srs system, it can be one of the two bulbs in the dash etc. Autologic, Nanocom, Testbook, Lynx + more can communicate.
 
For diagnostic on the P38 Range Rover - you will need a unit designed for Land Rover use...LR used a uniquie interface protocol for their systems, whereas the petrol engine ECU is EOBD (OBDII) compliant...the Diesel model will only talk to LR based diagnostics or for the Engine ECU a Bosch system!
 
Faultmate and others can communicate with the SRS ECU. The steering wheel rotary coupler is one possible cause, also if an airbag has ever fired the ECU will have to be replaced.
Put your approximate location, there may be someone nearby with the kit to check it.
 
thanx all,im in north kent if anybody can help with the right testing gear,,and yes no connectors under seat,im not sure whether units have fired at all,,is thier any way of checking,,
 
thanx again DATATEK,,But batterries a goodun only 3 months old and kept regularly charged,got friend trying to sort tech 4 check so fingers crossed
 
Last edited:
hi Druim

yes i can remove by pressing lower button on stalk the display goes through the options on fuel,and trips,,also the SRS light is flashing,,have checked bullbs all good,have noticed in engine bay that i have some serious extra earth leads attached to various parts they all look like was proffesionally done aswell,probs had earthing problem in past,by the way mine is a jap import if that makes any difference,was also trying to work out why i have no beep from alarm,lights flash but wont work with fob,so just use key anyway,,just a minor issue lol,
 
Please be very careful when working on the SRS and never use any multimeters or other general test equipment on components or connectors.

The SRS system uses energy reserve capacitors to keep the system active if electrical supply failure under crash conditions. Always remove the ignition key from the ignition switch, disconnect the vehicle battery and wait 10 minutes (make it 15) before working on the SRS.
 
Thanks for the advice and ohh yesssss,, battery is dissed for 15 minute minimum before taking apart ( half hour to be safe ).



stopover said:
Please be very careful when working on the SRS and never use any multimeters or other general test equipment on components or connectors.

The SRS system uses energy reserve capacitors to keep the system active if electrical supply failure under crash conditions. Always remove the ignition key from the ignition switch, disconnect the vehicle battery and wait 10 minutes (make it 15) before working on the SRS.
Click to expand...
 
hi all managed to sort the fault by buying the hawkeye from bearmach ,,as soon as i plugged it in and got to airbag section found the fault and cleared ,,thanks for all for trying to help but only fix was buying the faultreader,,,tried everything else with no luck,,,cheers all mac
 
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