I’m having a bit of a nightmare with the airbag system on a 1999 E38 728i I’ve got.
It uses the old 20-Pin under bonnet OBD port (it does have a newer-style OBDII 16-Pin socket inside the car, but only works with the engine management system). I read the codes some time ago (can’t find the list I made, but there were a couple of codes) and the first logical step following research was to change the NSF seatbelt pretensioner as everything pointed to that side of the car. I swapped that out for a supposedly good, used replacement. The light stayed on and other cars became a priority, so it got left for a few months.
I really want to get the car done though, so plugged it in again today and it has a list of codes, longer than before I’m sure, which won’t clear. These codes are as follows:
11 - Power Supply
16 - Sensor for side airbag, left
0B - Battery Positive Terminal Isolation 1
F0 - Internal Control Unit Fault
1A - Seat Occupancy Recognition (SBE1)
05 - Side Airbag, Front Left
03 - Belt Tensioner, Front Passenger
What does that point to? One of the codes suggests an ECU Fault. I can get that out and set away for testing/repair, but everything else points to something specifically in the NSF area. Pointing towards the seat and side airbag set-up in particular.
As said, the NSF pretensioner has been changed, but it was a used item.
The car was jump started today and hadn’t been started for probably 2 months, so guess anything power-related may or may not be connected to that.
I’m hoping that combination of fault codes strikes a chord with someone before I painstakingly have to go through every mm of the electrical system connected to this.
TIA!
It uses the old 20-Pin under bonnet OBD port (it does have a newer-style OBDII 16-Pin socket inside the car, but only works with the engine management system). I read the codes some time ago (can’t find the list I made, but there were a couple of codes) and the first logical step following research was to change the NSF seatbelt pretensioner as everything pointed to that side of the car. I swapped that out for a supposedly good, used replacement. The light stayed on and other cars became a priority, so it got left for a few months.
I really want to get the car done though, so plugged it in again today and it has a list of codes, longer than before I’m sure, which won’t clear. These codes are as follows:
11 - Power Supply
16 - Sensor for side airbag, left
0B - Battery Positive Terminal Isolation 1
F0 - Internal Control Unit Fault
1A - Seat Occupancy Recognition (SBE1)
05 - Side Airbag, Front Left
03 - Belt Tensioner, Front Passenger
What does that point to? One of the codes suggests an ECU Fault. I can get that out and set away for testing/repair, but everything else points to something specifically in the NSF area. Pointing towards the seat and side airbag set-up in particular.
As said, the NSF pretensioner has been changed, but it was a used item.
The car was jump started today and hadn’t been started for probably 2 months, so guess anything power-related may or may not be connected to that.
I’m hoping that combination of fault codes strikes a chord with someone before I painstakingly have to go through every mm of the electrical system connected to this.
TIA!