GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2006 🢒 Terraza 🢒 Brakes 🢒 Park Brake 🢒 DTC 064

Circuit Description

The inflatable restraint passenger presence system (PPS) communicates over a non-class 2 communication circuit to the inflatable restraint sensing and diagnostic module (SDM). When the ignition is turned ON, the inflatable restraint PPS module will check to make sure the PPS verification ID matches that stored in the SDM. If the SDM cannot communicate with the PPS, the SDM will set DTC B0092 and request the instrument panel cluster (IPC) to turn the AIR BAG indicator ON. If the SDM can communicate to the PPS but the verification ID does not match, the PPS will set DTC 033 and notify the SDM that a fault has occurred, and in turn the SDM will set DTC B0098 and request the IPC to turn the AIR BAG indicator ON.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC 064 PPS Communication/ID Performance

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Conditions for Setting the DTC
    • The PPS has lost communications with the SDM.
    • The PPS verification ID does not match the ID that is stored in the SDM.

Action Taken When the DTC Sets
    • The PPS will set a DTC 023, then communicate with the SDM via non-class 2 circuit.
    • The SDM will set DTC B0092 or B0098.
    • The SDM disables the instrument panel (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 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 B0098 is an indication that the SDM has received an incorrect PPS verification ID. 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 DTC B0098 as current. If DTC B0092 is set, then the SDM cannot communicate with the PPS.

Test Description

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

  1. This step tests for current PPS DTCs.

    2.

  2. This step tests for a short to ground, a high resistance, or an open in the PPS class 2 serial data circuit.

    3.

  3. This step tests for a short to voltage in the PPS class 2 serial data circuit.

Step

Action

Yes

No

Schematic Reference: SIR Schematics

Connector End View Reference: SIR Connector End Views and Power Seat Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

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 .

Does the PPS indicate that DTC 064 is current?

Go to Step 3

Go to Step 13

3

With the scan tool request the supplemental inflatable restraint (SIR) DTCs.

Does the scan tool indicate that DTC B0098 is current?

Go to DTC B0098

Go to Step 4

4
  1. Turn OFF the ignition.
  2. Disconnect the PPS module connector. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
  3. Inspect the PPS module terminals and harness connector for damage or corrosion.

Does the PPS module terminals or harness connector exhibit any signs of damage or corrosion?

Go to Step 5

Go to Step 6

5
  1. If the PPS module terminals are damaged, replace the PPS. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
  2. If the PPS harness connector is damaged, replace the connector. Refer to Connector Repairs in Wiring Systems.

Did you complete the replacement?

Go to Step 13

--

6
  1. Disconnect the main seat harness connector located under the RF seat.
  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 13

Go to Step 7

7
  1. Disconnect the sensing and diagnostic module (SDM) connector. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
  2. Inspect the SDM 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 13

Go to Step 8

8

Test the PPS class 2 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 13

Go to Step 9

9

  1. Turn ON the ignition, with the engine OFF.
  2. Test the PPS class 2 serial data 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 13

Go to Step 10

10

Replace the PPS. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 11

--

11
  1. Reconnect all SIR and PPS system components.
  2. Verify that all components, connectors, and connector position assurances (CPAs) are properly mounted.
  3. Use the scan tool in order to clear the SIR and PPS DTCs.
  4. Rezero the PPS. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
  5. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 12

System OK

12

Replace the SDM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 13

--

13
  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 Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
  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