DTC 2036-2045. Cadillac STS 2007

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2007 🢒 STS 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 DTC 2036-2045

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC 2036-2045: Internal Electronic Performance 2

The passenger presence system (PPS) is used to monitor the pressure profile of any occupant that is sitting in the front outboard passenger seat and communicates the profile classification to the sensing and diagnostic module (SDM). The SDM will either enable or suppress the deployment of the instrument panel (I/P) module based on the profile classification of the occupant. If the PPS detects this DTC within the PPS, then the PPS will communicate to the SDM through a non GMLAN communications circuit that a PPS fault is present. The SDM will then set DTC B0081 indicating a problem within the PPS and will suppress the deployment of the I/P module and then turn the AIR BAG indicator ON.

•	The PPS will set a DTC, and then communicate with the SDM via non GMLAN circuit.

•	The SDM will set DTC B0081.

•	The SDM disables the I/P module deployment loop.

•	The PPS will turn ON the passenger air bag status OFF indicator.

•	The SDM commands the AIR BAG indicator ON via serial data communications.

Conditions for Clearing the DTC

•	The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.

•	A history DTC will clear once 255 malfunction-free ignition cycles have occurred.

Diagnostic Aids

When DTC 1063 is set indicating that a new PPS must be installed.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Circuit/System Testing

Ignition ON, use the scan tool. Go to the PPS menu, then retrieve the DTCs. Refer to Passenger Presence System Displaying Code Procedure . Verify DTCs 2036-2045 exist.
Replace the PPS.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•	SIR/SRS Wiring Repairs

•	Control Module References for PPS replacement, setup, and programming