Buick Regal: DTC B0082

Diagnostic Instructions

• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
• Review Strategy Based Diagnosis for an overview of the diagnostic approach.
• Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0082 01

Seat Belt Reminder Sensor Short to Battery

DTC B0082 02

Seat Belt Reminder Sensor Short to Ground

DTC B0082 04

Seat Belt Reminder Sensor Open Circuit

DTC B0082 05

Seat Belt Reminder Sensor High Voltage/Open Circuit

Diagnostic Fault Information

Circuit/System Description

The seat belt reminder sensor is in the passenger seat cushion and provides an input to the inflatable restraint sensing and diagnostic module (SDM). The SDM supplies a low reference circuit and a seat belt reminder sensor signal circuit to determine seated or unseated condition of passenger seat.

Conditions for Running the DTC

Ignition voltage is between 9 - 16 V.

Conditions for Setting the DTC

B0082 01

The SDM detects a short to voltage in the seat belt reminder sensor signal circuit.

B0082 02

The SDM detects a short to ground in the seat belt reminder sensor signal circuit

B0082 04

The SDM detects an open/high resistance in the seat belt reminder sensor signal circuit or the seat belt reminder sensor ground circuit

B0082 05

The inflatable restraint sensing and diagnostic module detects short to voltage or an open/high resistance in the seat belt reminder sensor signal circuit or an open/high resistance in the seat belt reminder sensor ground circuit.

Action Taken When the DTC Sets

The SIR System is disabled and no deployments are allowed.

Conditions for Clearing the DTC

• The DTC will be current for as long as the fault is present
• When the fault is no longer present, the DTC will be a history DTC
• A history DTC will clear after 50 ignition cycles.

Reference Information

Schematic Reference

SIR Wiring Schematics

Connector End View Reference

Component Connector End View Index

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

• Circuit Testing
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Connector Repairs

Scan Tool Reference

Refer to Control Module References for scan tool information.

Circuit/System Verification

1. Ignition ON, with the passenger seat unoccupied, verify the scan tool Passenger Seat Occupancy Status parameter is Empty Seat.

2. With the passenger seat occupied, verify the scan tool Passenger Seat Occupancy Status parameter is Occupied.

Circuit/System Testing

1. Ignition OFF.

2. Disconnect the harness connector at the B60 seat belt reminder sensor.

3. Test for less than 30 Ω between the ground circuit terminal 2 and ground.

• If 30 Ω or greater

1. Ignition OFF, disconnect the harness connector at the K36 SDM.
2. Test for less than 2 Ω in the passenger air bag disable switch ground circuit end to end.
   • If 2 Ω or greater, replace the coil or repair the open/high resistance in the circuit.
   • If less than 2 Ω, replace the K36 SDM.

• Go to next step: If less than 30 Ω

4. Ignition ON, test for 4.75 - 5.25 V between the signal circuit terminal 1 and ground.

• If less than 4.75V

1. Disconnect the harness connector at the K36 SDM.
2. Test for infinite resistance between the signal circuit and ground.
   • If less than infinite resistance, repair the short to ground on the circuit.
3. Test for less than 2 Ω in the signal circuit end to end.
   • If 2 Ω or greater, repair the open/high resistance in the circuit.
   • If less than 2 Ω, replace the K36 SDM.

• If greater than 5.25V

1. Ignition OFF.
2. Disconnect the harness connector at the K36 SDM.
3. Ignition ON.
4. Test for less than 1 V between the signal circuit and ground.
   • If 1 V or greater, repair the short to voltage on the circuit.
   • If less than 1 V, replace the K36 SDM.

• Go to next step: If between 4.75 - 5.25V

5. Replace the B60 seat belt reminder sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

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

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