SIR light On/Service Airbag Warning Message With DTC B0081 - keywords B00813A B008139 B008171 harness IPC passenger PIC3799 PIC3799A PPS seat

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

A customer might have a SIR light on with any of the following codes set in the SDM.

DTC B0081 3A: Passenger Presence System Incorrect Component Installed

DTC B0081 39: Passenger Presence System Internal Electronic Failure

DTC B0081 71: Passenger Presence System Invalid Serial Data Received

With Passenger Presence System (PPS) Flash Code of DTC 023

Note: You will only find this 023 DTC by going through the (PPS) menu

There are two things to check before getting too far into diagnostics.

1. Check for a loose terminals at the connector for the "Seat Belt Tension Sensor" this sensor (built into the retractor) has a pigtail on it about 1 foot from the retractor. This connector is located under the right rear sill plate on the 4-door sedan, and rearward under the sill plate on a 2 door coupe.
2. Check for a pinched/cut wiring harness under the passenger side seat assembly. This harness can get caught in the seat track frame/rail assembly.

Note: This pinched harness condition is more prone to occur on vehicles built before 9/22/06

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.