SRS Warning Light 03
by, 22-11-2011 at 10:32 PM (1051 Views)
Initially, I was talking with the owner about the several options
in case we couldn’t fix the issue.
One of them was to replace the SRS unit with an used one.
However, after looking at this capacitor leakage,
I couldn’t recommend it because the leakage could be already happening on
the used one as well.
Having said this, it is not that common to hear that SRS unit failed in
this mode so still not sure how it triggered the leakage….
For your reference, there was no trace of moisture/water poured over
the unit from the A/C evaporator due to the blocked A/C drain hose.
So, started the repairing service…..
New capacitors, hard and jumper wires, solder bridge, etc used to
strengthen the missing/damaged circuit.
One thing to be clear.
SRS is a safety equipment.
Therefore, it should not be repaired but replaced with the new one.
I’m only doing this with the agreement from the owner.
Just I thought I have finished all of the repairing service around
the leaked capacitors, I noticed that there was still short circuit somewhere
on the board.
Eventually, it was traced back to one of the NPN transistor being dead.
Most of the electronics components on our NSX were designed in
80’s so they are not RoHs compliant and thus,
not sold as an off the shelf products any more.
I have searched for the replacement model but not happy with
the spec so started to search through my spare parts from old days.
Magically, I managed to find exactly the same parts and
installed it on the board.
Once the coating dries up, bench check again and
time to install it back into the cabin.
Finger crossed but it should be fine now as I didn’t see any issues on
the chassis side.
Just hope I can put everything back in place in time for the collection.