Pyrotechnic Safety Belt Tensioner - For Convertible

Group 72
Equipment and
Accessories

Bulletin Number
72 04 91 (3388)

Woodcliff Lake, NJ
May 1994
Product Engineering

This Service Information bulletin supersedes S.I. 72 04 91 (3388) dated October 1991, which should be removed from your S.I. binder and discarded. This bulletin adds information on Belt Tensioner Flash Codes.

SUBJECT:
Pyrotechnic Safety Belt Tensioner for Convertible

MODELS:
1992/1993 Model Year E30 (318iC, 325iC) Convertible

Situation:
As of 10/91 production, the E30 Convertibles are fitted with a pyrotechnic safety belt tensioner on the passenger side only. The Repair Manual omits the flash code for the pyrotechnic safety belt tensioner. The flash code 4-2-3 is for the passenger side pyrotechnic safety belt tensioner.

Correction:
If the 4-2-3 flash code is encountered, the electrical connections should be checked. If there are no electrical problems found, the tensioner unit is either deployed or defective and must be replaced. No attempt should be made to disassemble or service the tensioner unit.

Parts Information:
The following part numbers should be used when replacing this equipment.

"Preload Device" Safety Belt P/N 72 11 8 129 844

Please refer to the E32 repair manual Group 32 for information on these units.

Refer to Service Information bulletin 72 03 89 (1835) for handling information of pyrotechnic devices.

Note that the special control module required for E30 convertible vehicles equipped with the pyrotechnic tensioner is not mentioned in the Parts Microfiche. However, the part number is given below for reference only:

SRS Control Module (preload device compatible) P/N 65 77 1 382 904

Note!
This unit is only compatible with the above cars. The control units are not interchangeable between belt tensioner/non-belt tensioner E30 models.