2010 Cadillac CTS Sedan AWD V6-3.6L Page 154

2010 Cadillac CTS Sedan AWD V6-3.6L Page 154

Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0081

DTC B0081

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this 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

DTC B0081 11

- Passenger Presence System Above Threshold (Build Check Failure)

DTC B0081 3A

- Passenger Presence System Incorrect Component Installed

DTC B0081 4B

- Passenger Presence System Calibration Not Learned

DTC B0081 5A

- Passenger Presence System Plausibility Failure

DTC B0081 71

- Passenger Presence System Invalid Serial Data Received

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 within itself. When the SDM has completed the power-up mode, the SDM will establish communication with

the PPS. The SDM will also request the instrument panel cluster to illuminate both of the PASSENGER AIR BAG ON/OFF indicators for 5

seconds. If the SDM detects that the PPS has set a current DTC, the SDM will then disable the instrument panel (I/P) module deployment loop, set

DTC B0081, and illuminate the AIR BAG indicator.

Conditions for Running the DTC

Ignition voltage is between 9-16 V.

Conditions for Setting the DTC

Any of the following conditions must exist for 5 seconds:

B0081 0F

* The SDM has received a fault present message from the PPS.

* The PPS is in assembly plant mode and the SDM is in production mode.

B0081 11

The PPS is above maximum threshold. The PPS module failed the preload/build check.

B0081 3A

The SDM has received a mismatch message indicating the wrong PPS is installed on the vehicle.

B0081 4B

The PPS is not calibrated. Preload/build check test not run.