Cobalt L4-2.4L (2007)
Seat Belt Tensioner: All Technical Service Bulletins
Restraints - MIL ON DTC B0081 and PPS Code 23
TECHNICAL
Bulletin No.: 09-09-40-003A
Date: July 26, 2010
Subject: SIR/Airbag Light Illuminated, DTC B0081 and Passenger Presence System (PPS) Code 23 Stored (Replace Passenger Seat Belt Retractor and
Re-Route Wire Harness)
Models:
2006-2008 Chevrolet Cobalt Coupe
2008-2010 Chevrolet Cobalt SS Coupe
2006 Pontiac Pursuit Coupe (Canada Only)
2007-2010 Pontiac G5 Coupe
Supercede:
This bulletin is being revised to update the model years. Please discard Corporate Bulletin Number 09-09-40-003 (Section 09 - Restraints).
Condition
Some customers may comment that the SIR light is illuminated. Upon investigation, the technician may find the following SDM code stored:
DTC B0081 71: Passenger Presence System Invalid Serial Data Received With Passenger Presence System (PPS) Flash Code of DTC 023
Cause
The wire on the Belt Tension Sensor (BTS), that is part of the retractor assembly, may become open or acquire a ground near the sensor. If the BTS is
rotated toward the rear of the vehicle, added stress is applied to the wire bundle that may cause an open or a ground path. The two photos below illustrate
the possible effects on the wiring. Each photo indicates the area to investigate at the arrow labeled (1).
Figure 1 - Stress Point on Wiring Bundle
Figure 2 - Outer Wiring Wrap Insulation Breached
Correction
If PPS DTC 23 is Current, Perform the Following Steps
Important
Technicians are to inspect the electrical connections to all the PPS components.
1. Check for shorts, opens and continuity between the PPS module and belt tension sensor (BTS) mating connector that is part of the vehicle harness
(Located under the passenger rear trim panel near the rear seat cushion).
2. If there are no wiring issues, replace the Passenger Seat Belt Retractor using the repair instruction "Seat Belt Installation and Seatbelt Sleeve
Modification" located below. Do not replace the PPS.
3. Connect the Diagnostic Scan Tool and clear the codes.
4. Verify that the DTC does not reset.
