2010 Cadillac CTS Sedan AWD V6-3.6L Page 141

2010 Cadillac CTS Sedan AWD V6-3.6L Page 141

tests to diagnose critical malfunctions within itself. The PPS is used to monitor the weight of an occupant in the front passenger seat. If the pressure

from the occupant's weight is less than a specified value or an empty seat is detected, the PPS module will send a suppress signal to the SDM to

disable the instrument panel (I/P) module. When the PPS detects a fault within itself, then the PPS will communicate to the SDM through serial

data communications that a PPS fault is present. The SDM will disable the deployment of the module and then turn the AIR BAG indicator ON.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

This DTC is set when the SDM has commanded an air bag deployment while the PPS has determined that the front passenger seat has one the

following conditions:

* The pressure from the occupants weight is less than a specified value. The PPS module sent a disable signal to the SDM to disable the I/P

module.

* Empty front passenger seat

* A PPS fault was detected

Action Taken When the DTC Sets

* DTC B0056 and B0058 will only set if there is a child seated or the passenger seat is empty.

* DTC B0052, B0053, or B0055 will set along with this DTC.

* The SDM commands the AIR BAG indicator ON.

Conditions for Clearing the DTC

Any of the codes will set along with one of the following latched codes: DTC B0052, B0053, or B0055 and cannot be cleared.

Reference Information

Schematic Reference

SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation/SIR System Description

and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition OFF, verify that the vehicle does not show any signs of inflator module or pretensioner deployment.

瀚慖f the vehicle displays any signs of inflator deployment, refer to Repairs and Inspections Required After a Collision (See: Body and

Frame/Repairs and Inspections Required After a Collision/Service and Repair).

2. Verify DTC B0052, B0053, or B0055 is not set.

瀚慖f DTC is set , refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble

Code (DTC) List - Vehicle).

3. Clear DTCs. Verify DTC B0056, B0057, or B0058 is not set.

瀚慖f any of the DTCs are set, replace the SDM.