SRS - Warning Lamp ON/DTC's B9183/B91A3 Stored
Date: July 22, 2004Order No.: P-B-91.40/67a
Supersedes: P-B-91.40/67 dated January 22, 2004
Group: 91
Revision: Procedure Updated - Return of connectors no longer necessary
SUBJECT:
Model 215, as of 1.12.02 Production
Model 220 as of 1.9.02 Production
SRS Indicator Lamp On
If you receive customer reports in the above model vehicles that the SRS light is illuminated and diagnostic fault code(s) B9183 and/or B91A3 are stored in the SRS ECU, the resistance of the circuit for the belt buckle tensioner squib may be too high. On Model 215, this high resistance may be caused by a malfunction in the seat belt ETR connector/left seat separation point (X28/8) or the seat belt ETR connector/right seat separation point (X28/9). On Model 220, this high resistance may be caused by a malfunction in the driver's seat buckle ETR connector separation point (X28/34) or the passenger seat buckle ETR connector separation point (X28/35). The malfunctioning connectors must be replaced with a repair kit. Please follow the below procedure to repair.
Note:
It is necessary to replace both the driver and passenger side connectors.
1. Remove ignition key.
2. Remove front seats, as per the following WIS document:
^ Model 215 - AR91.10-P-1000N
^ Model 220 - AR91.10-P-1000MB
Note:
Seat adjustment is still possible when the corresponding door is open, even though ignition key is removed.
3. Position seats on a suitable working surface.
4. Replace connector, based upon the model specific information listed below.
Note:
Wiring diagram of airbag control unit with integrated emergency call system, can be found in the following WEB ETM document:
^ Model 215 up to 31.8.02: PE91.60-P-2101CA
^ Model 215 as of 1.9.02: PE91.60-P-2101CB
^ Model 220: PE91.60-P-2101SB
a) Cut electrical wires approximately 80 mm in front of connector.
b) Carefully remove approximately 50 mm of fabric tape.
c) Strip approximately 15 mm of insulation from the electrical wires.
d) Slide solder connector onto electrical wires.
e) Twist bared electrical wires with wire ends from repair kit.
Note:
Observe wire color assignment, by following the table!
f) Position solder connection in center of twisted wires and shrink with heat gun (solder).
Utilize wiring harness repair set 220 589 02 99 00 and heat gun 458-HL1802E via the MBUSA Standard Service Equipment Program.
g) Check solder connections.
h) Wrap fabric tape around electrical wires on both sides.
i) Remove old connector from bracket and install new connector.
j) Perform the same above steps on coupling in passenger compartment.
Note:
Ensure proper engagement when assembling electrical connector for driver seat ETR or front passenger seat ETR.
k) Delete fault memory with STAR DIAGNOSIS.
l) Install in the reverse order.
Parts Information
Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair.
In Case of Warranty