| Author |
Message |
Jan van Berendonk
TryHard
Vic
V8
Posts: 231
Reg: 08-2012
|
I have purchased an UZZ31 which has the airbag light on. Tried the Tc AB reset sequence, with the Airbag light blinking which should indicate the fault has been cleared but the light stays on.
What else can I check to remove the fault?
Do I need to get another airbag?
All help appreciated. |
Tim Schroeter
Tinkerer
NSW
V8, V8, V8
Posts: 98
Reg: 04-2014
|
The airbag ecu itself is most likely faulty. There are capacitors in it that leak & cause a fault. |
Jan van Berendonk
TryHard
Vic
V8
Posts: 232
Reg: 08-2012
|
Where does the airbag ecu hide? |
Tim Schroeter
Tinkerer
NSW
V8, V8, V8
Posts: 99
Reg: 04-2014
|
Remove the console. It sits under there near the dash. |
Mike Beck
Goo Roo
New Zealand
UZZ32 No.32 & JZZ31 3.0GT
Posts: 5957
Reg: 11-2005
|
They are quite deep in there, I think you need torx bits to loosen the screws too. |
John Stafford
DieHard
Qld.
Soarer UZZ31 GT-L V8, 11 second XR6T
Posts: 981
Reg: 02-2010
|
Ok, I have the same issue just appeared. What is the procedure to fix it? Does anyone have a tutorial on replacing the offending caps?
Thanks for help. |
Mike Beck
Goo Roo
New Zealand
UZZ32 No.32 & JZZ31 3.0GT
Posts: 5981
Reg: 11-2005
|
There's no set procedure.
Best case is open yours up, see what caps look leaky or suspect and replace them with high quality ones of a similar capacitance / voltage.
The bigger power retaining ones were leaking in some I inspected. |
Mike Beck
Goo Roo
New Zealand
UZZ32 No.32 & JZZ31 3.0GT
Posts: 5985
Reg: 11-2005
|
 |
John Stafford
DieHard
Qld.
Soarer UZZ31 GT-L V8, 11 second XR6T
Posts: 982
Reg: 02-2010
|
Thanks Mike, I will open it up. |
Jan van Berendonk
TryHard
Vic
V8
Posts: 256
Reg: 08-2012
|
I just removed my airbag ECU and had it checked by a Tech, all Caps passed. Is there any thing else I can check.
Currently the bulb has been removed from the dash as I just had the car roadworthy. As my other 1994 UZZ31 does not have an airbag I am considering removing the airbag from this 1994 UZZ31.
Is there any other potential problems with removing the Airbag and ECU?
How did you go with yours, John |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2661
Reg: 03-2007
|
there are 2 sensors behind front bumper make sure they are connected , but its probable the clock spring in the st/wheel , |
John Stafford
DieHard
Qld.
Soarer UZZ31 GT-L V8, 11 second XR6T
Posts: 983
Reg: 02-2010
|
Jan, I haven't gotten to pulling my Ecu out yet.
Dave, What is the clock spring in the steering wheel? |
Jan van Berendonk
TryHard
Vic
V8
Posts: 259
Reg: 08-2012
|
What can I do about the clock spring in the steering wheel if that is the problem? |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2663
Reg: 03-2007
|
you would have to change it for a good one
|
Jan van Berendonk
TryHard
Vic
V8
Posts: 260
Reg: 08-2012
|
Is there a way to check the clock spring? |
Jan van Berendonk
TryHard
Vic
V8
Posts: 262
Reg: 08-2012
|
Also where are the 2 sensors behind the front bumper located?
My Bumper has been repainted maybe they did not reconnect the sensors.
Thanks, Jan |
Tim Schroeter
TryHard
NSW
V8, V8, V8
Posts: 113
Reg: 04-2014
|
Jan the sensors are high up under the guard. Attached to the front skirt. They are activated by a collision hard enough to deform the front skirt. |
Mike Beck
Goo Roo
New Zealand
UZZ32 No.32 & JZZ31 3.0GT
Posts: 6004
Reg: 11-2005
|
Should be able to do a simple multimeter test with a clock spring.
its just a spool off ribbon cable after all
My BMW E36s one was all corroded! Cheap bloody German cars. |
Jan van Berendonk
TryHard
Vic
V8
Posts: 264
Reg: 08-2012
|
I have checked the clock spring and that is fine.
Followed the Tc, AB, Tc, AB, Tc sequence.
Holding Tc to ground the Airbag failure light goes out for a couple of seconds and then begins to flash, which should indicate the fault has cleared.
Yet as soon as I remove the Tc to earth wire the error light comes back on |
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