GM Service Manual Online
For 1990-2009 cars only

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

B0014 01: LF Side Deployment Loop Short to Battery

B0014 02: LF Side Deployment Loop Short to Ground

B0014 04: LF Side Deployment Loop Open Circuit

B0014 0D: LF Side Deployment Loop Resistance Above Threshold

B0014 0E: LF Side Deployment Loop Resistance Below Threshold

B0015 01: LF Pretensioner Deployment Loop Short to Battery

B0015 02: LF Pretensioner Deployment Loop Short to Ground

B0015 04: LF Pretensioner Deployment Loop Open Circuit

B0015 0D: LF Pretensioner Deployment Loop Resistance Above Threshold

B0015 0E: LF Pretensioner Deployment Loop Resistance Below Threshold

B0016 01: LF Roof Rail Deployment Loop Stage 1 Short to Battery

B0016 02: LF Roof Rail Deployment Loop Stage 1 Short to Ground

B0016 04: LF Roof Rail Deployment Loop Stage 1 Open Circuit

B0016 0D: LF Roof Rail Deployment Loop Stage 1 Resistance Above Threshold

B0016 0E: LF Roof Rail Deployment Loop Stage 1 Resistance Below Threshold

B0018 01: LF Roof Rail Deployment Loop Stage 2 Short to Battery

B0018 02: LF Roof Rail Deployment Loop Stage 2 Short to Ground

B0018 04: LF Roof Rail Deployment Loop Stage 2 Open Circuit

B0018 0D: LF Roof Rail Deployment Loop Stage 2 Resistance Above Threshold

B0018 0E: LF Roof Rail Deployment Loop Stage 2 Resistance Below Threshold

B0019 01: Passenger Frontal Deployment Loop Stage 1 Short to Battery

B0019 02: Passenger Frontal Deployment Loop Stage 1 Short to Ground

B0019 04: Passenger Frontal Deployment Loop Stage 1 Open Circuit

B0019 0D: Passenger Frontal Deployment Loop Stage 1 Resistance Above Threshold

B0019 0E: Passenger Frontal Deployment Loop Stage 1 Resistance Below Threshold

B0020 01: Passenger Frontal Deployment Loop Stage 2 Short to Battery

B0020 02: Passenger Frontal Deployment Loop Stage 2 Short to Ground

B0020 04: Passenger Frontal Deployment Loop Stage 2 Open Circuit

B0020 0D: Passenger Frontal Deployment Loop Stage 2 Resistance Above Threshold

B0020 0E: Passenger Frontal Deployment Loop Stage 2 Resistance Below Threshold

B0021 01: RF Side Deployment Loop Short to Battery

B0021 02: RF Side Deployment Loop Short to Ground

B0021 04: RF Side Deployment Loop Open Circuit

B0021 0D: RF Side Deployment Loop Resistance Above Threshold

B0021 0E: RF Side Deployment Loop Resistance Below Threshold

B0022 01: RF Pretensioner Deployment Loop Short to Battery

B0022 02: RF Pretensioner Deployment Loop Short to Ground

B0022 04: RF Pretensioner Deployment Loop Open Circuit

B0022 0D: RF Pretensioner Deployment Loop Resistance Above Threshold

B0022 0E: RF Pretensioner Deployment Loop Resistance Below Threshold

B0023 01: RF Roof Rail Deployment Loop Stage 1 Short to Battery

B0023 02: RF Roof Rail Deployment Loop Stage 1 Short to Ground

B0023 04: RF Roof Rail Deployment Loop Stage 1 Open Circuit

B0023 0D: RF Roof Rail Deployment Loop Stage 1 Resistance Above Threshold

B0023 0E: RF Roof Rail Deployment Loop Stage 1 Resistance Below Threshold

B0025 01: RF Roof Rail Deployment Loop Stage 2 Short to Battery

B0025 02: RF Roof Rail Deployment Loop Stage 2 Short to Ground

B0025 04: RF Roof Rail Deployment Loop Stage 2 Open Circuit

B0025 0D: RF Roof Rail Deployment Loop Stage 2 Resistance Above Threshold

B0025 0E: RF Roof Rail Deployment Loop Stage 2 Resistance Below Threshold

Diagnostic Fault Information

Circuit

Short to Ground

High Resistance

Open

Short to Voltage

Signal Performance

Side Impact Module - Driver - Low Control

B0014 02

B0014 04

B0014 0D

B0014 01

B0014 0E

Side Impact Module - Driver - High Control

B0014 02

B0014 04

B0014 0D

B0014 01

B0014 0E

Seat Belt Pretensioner - Driver Low Control

B0015 02

B0015 04

B0015 0D

B0015 01

B0015 0E

Seat Belt Pretensioner - Driver - High Control

B0015 02

B0015 04

B0015 0D

B0015 01

B0015 0E

Roof Rail Module - Left - Low Control

B0016 02

B0016 04

B0016 0D

B0016 01

B0016 0E

Roof Rail Module - Left - High Control

B0016 02

B0016 04

B0016 0D

B0016 01

B0016 0E

IP Module - Stage 1 - Low Control

B0019 02

B0019 04

B0019 0D

B0019 01

B0019 0E

IP Module - Stage 1 - High Control

B0019 02

B0019 04

B0019 0D

B0019 01

B0019 0E

IP Module - Stage 2 - Low Control

B0020 02

B0020 04

B0020 0D

B0020 01

B0020 0E

IP Module - Stage 2 - High Control

B0020 02

B0020 04

B0020 0D

B0020 01

B0020 0E

Side Impact Module - Passenger - Low

B0021 02

B0021 04

B0021 0D

B0021 01

B0021 0E

Side Impact Module - Passenger - High

B0021 02

B0021 04

B0021 0D

B0021 01

B0021 0E

Seat Belt Pretensioner - Passenger - Low Control

B0022 02

B0022 04

B0022 0D

B0022 01

B0022 0E

Seat Belt Pretensioner - Passenger - High Control

B0022 02

B0022 04

B0022 0D

B0022 01

B0022 0E

Roof Rail Module - Right - Low Control

B0023 02

B0023 04

B0023 0D

B0023 01

B0023 0E

Roof Rail Module - Right - High Control

B0023 02

B0023 04

B0023 0D

B0023 01

B0023 0E

Circuit/System Description

If a malfunction is detected, a DTC will be stored in non-volatile memory. During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy the air bag module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity, shorts to ground, and shorts voltage. There are 2 shorting bars used within the module connector which will short together both high and low circuits, when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

B0014 01, B0015 01, B0016 01, B0018 01, B0019 01, B0020 01, B0021 01, B0022 01, B0023 01, B0025 01

The air bag module high and/or low circuit is short to voltage for 120 milliseconds.

B0014 02, B0015 02, B0016 02, B0018 02, B0019 02, B0020 02, B0021 02, B0022 02, B0023 02, B0025 02

The air bag module high and/or low circuit is short to ground for 120 milliseconds.

B0014 04, B0015 04, B0016 04, B0018 04, B0019 04, B0020 04, B0021 04, B0022 04, B0023 04, B0025 04

The air bag module high and/or low circuit is open for 120 milliseconds.

B0014 0D, B0015 0D, B0016 0D, B0018 0D, B0019 0D, B0020 0D, B0021 0D, B0022 0D, B0023 0D, B0025 0D

The air bag module deployment loop resistance is more than 3.9 ohms for 120 milliseconds.

B0014 0E, B0015 0E, B0016 0E, B0025 0E, B0019 0E, B0020 0E, B0021 0E, B0022 0E, B0023 0E, B0025 0E

The airbag module deployment loop resistance is less than 1.1 ohms for 120 milliseconds.

Action Taken When the DTC Sets

    • The SDM commands the AIR BAG indicator ON via serial data communications.
    • The SDM will store a DTC, if event occurs system will still attempt deployments.

Conditions for Clearing the DTC

    • The condition responsible for setting the DTC no longer exists.
    • A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Description and Operation

SIR System Description and Operation

Electrical Information Reference

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

Scan Tool Reference

    •  Scan Tool Data List
    •  Scan Tool Data Definitions

Special Tools Required

J 38715-A Driver and Passenger SIR Load Tool

Circuit/System Testing

Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

   • The pretensioner
   • The air bag module
   • The SDM module
   • The air bag wiring harness connector
   • The SDM wiring harness connector

  1. Ignition OFF, disconnect the harness connector at the applicable airbag module. Refer to the applicable airbag module replacement procedure.
  2. With the applicable adaptor, connect J 38715-A .
  3. Ignition ON, with a scan tool, verify DTC is set as current.
  4. If DTC is not set or is set as history, replace the applicable airbag module.
  5. Ignition OFF, disconnect J 38715-A and the applicable adaptor.
  6. Ignition ON, test for less than 1 volt between the applicable HI circuit and ground.
  7. If not the specified range, test the circuit for a short to voltage.
  8. Test for less than 1 volt between the applicable LOW circuit and ground.
  9. If not the specified range, test the circuit for a short to voltage.
  10. Ignition OFF, test for infinite resistance between the applicable HI circuit and ground.
  11. If not the specified range, test the circuit for a short to ground.
  12. Test for infinite resistance between the applicable LOW circuit and ground.
  13. If not the specified range, test the circuit for a short to ground.
  14. Disconnect the harness connector at the SDM.
  15. Test for less then 1 ohm of resistance between the SDM connector and the airbag module connector HI circuit.
  16. If not the specified range, test the circuit for an open/high resistance.
  17. Test for less then 1 ohm of resistance between the SDM connector and the airbag module connector LOW circuit.
  18. If not the specified range, test the circuit for an open/high resistance.
  19. If all circuits test normal, replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Inflatable Restraint Instrument Panel Module Replacement
    •  Inflatable Restraint Roof Side Rail Module Replacement
    •  Seat Belt Retractor Pretensioner Replacement - Front
    •  SIR/SRS Wiring Repairs
    •  Control Module References for SDM replacement, setup, and programming