GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Express - AWD 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 DTC B0092

Circuit Description

When the ignition is turned ON, 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 passenger presence system (PPS). The PPS will respond by commanding both the PASSENGER AIR BAG ON/OFF indicators ON for 5 seconds. Then, the SDM will transmit a request message to the PPS to receive the PPS verification ID. The PPS will transmit the verification ID to the SDM and the SDM will compare the ID received to data stored in memory. The SDM will set DTC B0092 to notify the driver that the PPS has a current malfunction present or has not established/loss communications with the PPS.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B0092 Passenger Presence System Performance

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Conditions for Setting the DTC
    • The SDM has loss or never established communications with the PPS.
    • The SDM detects that the PPS has set a DTC.

Action Taken When the DTC Sets
    • The SDM disables the instrument panel (I/P) module deployment loop.
    • The SDM commands the AIR BAG indicator ON via Class 2 serial data.
    • The PPS will turn ON the PASSENGER AIR BAG OFF indicator.

Conditions for Clearing the DTC
    • The condition responsible for setting the DTC no longer exists.
    • You issue a scan tool CLEAR DTCs command.
    • A history DTC will clear once 255 malfunction-free ignition cycles have occurred.

Diagnostic Aids

DTC B0092 is an indication that the SDM has no or loss communication with the PPS or the PPS has internal faults. The SDM will continue to request the verification ID from the PPS for 5 seconds. If the SDM does not receive the verification ID from the PPS within 5 seconds the SDM will set the DTC as current, illuminate the AIR BAG indicator, and disable the I/P module deployment loop.

Test Description

The numbers below refer to the step numbers in the diagnostic table:

  1. This test checks the PPS for DTC 1063.

    2.

  2. This test checks the PPS for any current or history DTCs.

    3.

  3. This test checks the PPS data communications circuit for an open or high resistance.

Step

Action

Yes

No

Schematic Reference: SIR Schematics

Connector End View Reference: SIR Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

  1. Turn OFF the ignition.
  2. Install a scan tool.

    3. Important: If the passenger presence system (PPS) has any current or history DTCs stored, you must address the PPS DTCs before continuing with this diagnostic table.

  3. Use the scan tool to request the PPS DTCs. Refer to Passenger Presence System Displaying Code Procedure .

Does the scan tool indicate that DTC 1063 is current?

Go to Step 10

Go to Step 3

3

Does the PPS displays any current or history DTCs?

Go to Diagnostic Trouble Code (DTC) List - Vehicle

Go to Step 4

4

  1. Turn OFF the ignition.
  2. Disconnect the PPS module connector.
  3. Inspect the PPS connector for damage or corrosion. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 5

5
  1. Disconnect the inflatable restraint sensing and diagnostic module (SDM) connector. Refer to Control Module References for replacement, setup, and programming.
  2. Inspect the SDM connector for damage or corrosion. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 6

6

Test the PPS data communication circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 7

7

Test the PPS ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 8

8

Test the PPS Ignition 1 voltage circuit for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 9

9
  1. Turn ON the ignition, with the engine OFF.
  2. Test the PPS ground circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 10

10
  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 11

--

11
  1. Reconnect all SIR and PPS components.
  2. Verify that all components, connectors, and connector position assurances (CPA)s are properly mounted.
  3. Use the scan tool in order to Clear the SIR and PPS DTCs.
  4. Operate the vehicle within the Conditions for Running the DTC as specified in the text.

Does the DTC reset?

Go to Step 2

System OK