Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using the diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B0081 0F
- Passenger Presence System Erratic (sets in the SDM)
DTC B0081 3A
- Passenger Presence System Incorrect Component Installed (sets in the SDM)
DTC B0081 4B
- Passenger Presence System Calibration Not Learned (sets in the passenger presence (PPS) module)
DTC B0081 5A
- Passenger Presence System Plausibility Failure (sets in PPS module)
DTC B0081 39
- Passenger Presence System Internal Electronic Failure (sets in SDM)
DTC B0081 71
- Passenger Presence System Invalid Serial Data Received (sets in SDM)
Circuit/System Description
When the ignition is turned ON, the passenger presence system (PPS) and the inflatable restraint sensing and diagnostic module (SDM) performs
tests to diagnose critical malfunctions. When the SDM has completed the power-up mode, the SDM will establish communication with the PPS
module. The SDM will also request the instrument panel cluster (IPC) to illuminate both of the PASSENGER AIR BAG ON/OFF indicators ON for
5 seconds. If the SDM determines the correct PPS is installed and functioning normally, the SDM will illuminate the passenger air bags ON or OFF
indicator based on messages from the PPS. The SDM sends a message to the IPC to illuminate the appropriate PASSENGER AIR BAG ON/OFF
indicator.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
All of the following conditions must exist for 5 seconds:
B0081 0F
The SDM sets this DTC if there is a fault present in the PPS module.
B0081 3A
The SDM sets this DTC when the SDM has received a message from the PPS which indicates a mismatch between the SDM and PPS module. There
is either an incorrect SDM or PPS module installed on this vehicle.
B0081 4B
The PPS module sets this DTC when the PPS module has not learned the calibrations.
B0081 5A
The PPS module sets this code when the PPS module has lost communications with the SDM.
B0081 39
The SDM sets this DTC when the SDM has received a critical fault message from the PPS module.
