GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2007 🢒 Terraza 🢒 Brakes 🢒 Park Brake 🢒 DTC B1530

Circuit Description

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within the passenger presence system (PPS). When the SDM has completed the power-up mode, the SDM will establish communication with the PPS. The SDM will increase a fault counter with each ignition cycle that a fault exists with the PPS. The SDM will lock out the PPS after a predetermined ignition cycle count maximum has been reached. For more detailed information concerning class 2 serial data lines, refer to Data Link Communications Description and Operation .

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B1530 Discard Passenger Presence System 1

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Conditions for Setting the DTC
    • The PPS has a current fault.
    • The PPS fault counter in the SDM has reached 127 counts.

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 SDM will lock out the malfunctioning PPS.

Conditions for Clearing the DTC
    • The PPS has been replaced.
    • The SDM has been replaced.

Diagnostic Aids

Important: DTC B0092 or DTC B0098 will set if the PPS has a malfunction, and has set any one of the following DTCs: 023, 024, 063, 064, or 065. When DTC B0092 or DTC B0098 is present, it is important to check the PPS for any current DTC. Refer to Passenger Presence System Flash Code Procedures . If the PPS has any current DTCs, address those DTCs before performing this DTC chart.

Any repair performed on the original PPS will not clear DTC B1530.

Test Description

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

  1. This step checks for any current PPS DTCs.

    2.

  2. This step checks for the presence of DTC B1530.

    3.

  3. This step replaces the SDM.

    4.

  4. This step performs the SDM setup procedure.

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. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.

    3. Important: If the sensing and diagnostic module (SDM) has DTC B0092 or DTC B0098 stored as current, you must address those DTCs before continuing with this diagnostic table.

  3. With a scan tool, check for DTC B0092 or DTC B0098 is a current DTC.

Is DTC B0092 or DTC B0098 stored as current DTC?

Go to Diagnostic Trouble Code (DTC) List - Vehicle

Go to Step 3

3

If the passenger presence system (PPS) has been replaced then DTC B1530 will automatically be cleared. If the PPS was repaired and DTC B1530 is current, the SDM will have to be replaced.

Is DTC B1530 a current DTC?

Go to Step 4

System OK

4

Replace the SDM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 5

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5

Perform the Setup SDM Serial Number in body control module (BCM) procedure. Refer to Control Module References for replacement, setup, and programming.

Did you complete the setup procedure?

System OK

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