GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 CTS 🢒 DTC 🢒 DTC 2036-2045

Circuit Description

The inflatable restraint passenger presence system (PPS) is used to monitor the pressure profile of any occupant that is sitting in the front outboard passenger seat and communicate 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 class 2 communications circuit that a PPS fault is present. The SDM will then set DTC B0092 indicating a problem within the PPS.

DTC Descriptors

This diagnostic procedure supports the following DTCs:

    • DTC 2036 Internal Electronic Performance 2
    • DTC 2037 Internal Electronic Performance 2
    • DTC 2038 Internal Electronic Performance 2
    • DTC 2039 Internal Electronic Performance 2
    • DTC 2040 Internal Electronic Performance 2
    • DTC 2041 Internal Electronic Performance 2
    • DTC 2042 Internal Electronic Performance 2
    • DTC 2043 Internal Electronic Performance 2
    • DTC 2044 Internal Electronic Performance 2
    • DTC 2045 Internal Electronic Performance 2

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Conditions for Setting the DTC

The PPS has detected an internal fault and must be replaced.

Action Taken When the DTC Sets
    • The PPS will set a DTC then communicate with the SDM via non class 2 circuit.
    • The SDM will set DTC B0092.
    • The SDM disables the I/P module deployment loop.
    • The SDM commands the AIR BAG indicator ON via class 2 serial data.

Diagnostic Aids

When this DTC sets a new PPS must be installed.

Test Description

The number below refers to the step number on the diagnostic table.

  1. Inspect to see if DTCs 2036-2045 are set.

Step

Action

Yes

No

Schematic Reference: SIR Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

  1. Connect the scan tool.
  2. Go to the passenger presence system (PPS) menu, then retrieve the DTCs. Refer to Passenger Presence System Displaying Code Procedure .

Does the scan tool display DTC 2036-2045?

Go to Step 3

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3
  1. Turn OFF the ignition.

    2. Important: The PPS is a calibrated system. The PPS must be check for preloads after replacement.

  2. Replace the PPS. The PPS is only serviceable as PPS and seat bottom foam assembly. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 4

--

4
  1. Verify that all components, connectors and connector position assurances (CPA)s are properly mounted.
  2. Use the scan tool in order to clear the DTCs.
  3. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK