GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 Yukon XL - 4WD 🢒 DTC 🢒 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 located in the rearview mirror ON for 5 seconds. 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 also set DTC B0092 to notify the driver that the PPS has a current malfunction present. When the SDM detects that the PPS has set any one of the following DTCs, 023, 024, 063, 064, or 065 the SDM will disable the I/P module deployment loop, set DTC B0092 and command the AIR BAG indicator ON. For more detailed information concerning Class 2 serial data lines, refer to Data Link Communications Description and Operation in Data Link Communications.

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Action Taken When the DTC Sets
    • The SDM disables the I/P module deployment loop.
    • The SDM commands the AIR BAG indicator ON via Class 2 serial data.

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 received an incorrect PPS verification ID or has lost communication with the PPS. The SDM will continue to request the verification ID from the PPS for 5 seconds. If the SDM does not receive the correct 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.

Important: DTC B0092 will also set if the PPS has a current malfunction and has set any one of the following DTCs-023, 024, 064, or 065. The SDM will set DTC B0092 as current and command the AIR BAG indictor ON. This is done to notify the driver of any PPS malfunctions. When DTC B0092 is present it is important to check the PPS for any current DTCs. Refer to Passenger Presence System Flash Code Procedures . If the PPS has any current DTCs address these before performing this DTC chart.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. This step checks the PPS for any current or history DTCs.

    2.

  2. Inspects the PPS module connector.

    3.

  3. Inspects the main seat harness connector.

    4.

  4. Tests the PPS ground circuit for an open or high resistance.

    5.

  5. Tests the PPS ignition 1 voltage circuit for a short to ground, an open, or high resistance.

    6.

  6. Tests the PPS ground circuit for a short to voltage.

  7. Tests the PPS serial data circuit for a short to ground, a high resistance, or an open.

Step

Action

Yes

No

Schematic Reference: SIR Schematics

Connector End View Reference: SIR Connector End Views

1

Did you perform the Diagnostic System Check - SIR?

Go to Step 2

Go to Diagnostic System Check - SIR

2

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, request the passenger presence system (PPS) to flash DTCs. Refer to Passenger Presence System Flash Code Procedures .

Important: If the PPS has any current or history DTCs stored, you must address the PPS DTCs before continuing with this diagnostic table.

Does the PPS flash any current or history DTCs?

Go to Diagnostic Trouble Code (DTC) List

Go to Step 3

3

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

Did you find and correct the condition?

Go to Step 10

Go to Step 4

4

  1. Disconnect the main seat harness connector located under the RF seat. Refer to Power Seat Connector End Views in Seats.
  2. Inspect both halves of the connector for corrosion or damage. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 5

5

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

Did you find and correct the condition?

Go to Step 10

Go to Step 6

6

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 in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 7

7

  1. Reconnect the main seat harness.
  2. Turn ON the ignition with the engine OFF.
  3. Test the PPS ground circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

8

Test the PPS serial data circuit for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

9

Important: The PPS is a calibrated system. The PPS must be rezeroed after replacement.

Replace the PPS. Refer to Inflatable Restraint Passenger Presence System Replacement - Front .

Did you complete the replacement?

Go to Step 10

--

10
  1. Reconnect all SIR and PPS system components.
  2. Verify that all components, connectors, and CPAs are properly mounted.
  3. Use the scan tool in order to clear the SIR and PPS DTCs.
  4. Rezero the PPS. Refer to Passenger Presence System Rezeroing .
  5. 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