GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Equinox 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 DTC B0014-B0045

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 B0015 01: LF Pretensioner Deployment Loop Short to Battery

DTC B0015 02: LF Pretensioner Deployment Loop Short to Ground

DTC B0015 04: LF Pretensioner Deployment Loop Open Circuit

DTC B0015 0D: LF Pretensioner Deployment Loop Resistance Above Threshold

DTC B0015 0E: LF Pretensioner Deployment Loop Resistance Below Threshold

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

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

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

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

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

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

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

DTC B0019 04: Passenger Frontal Deployment Loop Stage 1 Open Circuit

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

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

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

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

DTC B0020 04: Passenger Frontal Deployment Loop Stage 2 Open Circuit

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

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

DTC B0022 01: RF Pretensioner Deployment Loop Short to Battery

DTC B0022 02: RF Pretensioner Deployment Loop Short to Ground

DTC B0022 04: RF Pretensioner Deployment Loop Open Circuit

DTC B0022 0D: RF Pretensioner Deployment Loop Resistance Above Threshold

DTC B0022 0E: RF Pretensioner Deployment Loop Resistance Below Threshold

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

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

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

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

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

Diagnostic Fault Information

Circuit

Short to Ground

Low Resistance

High Resistance

Open

Short to Voltage

Seat Belt Pretensioner - Driver Low Control

B0015 02

B0015 0E

B0015 0D

B0015 04

B0015 01

Seat Belt Pretensioner - Driver - High Control

B0015 02

B0015 0E

B0015 0D

B0015 04

B0015 01

Roof Rail Module - Left - Low Control

B0016 02

B0016 0E

B0016 0D

B0016 04

B0016 01

Roof Rail Module - Left - High Control

B0016 02

B0016 0E

B0016 0D

B0016 04

B0016 01

IP Module - Stage 1 - Low Control

B0019 02

B0019 0E

B0019 0D

B0019 04

B0019 01

IP Module - Stage 1 - High Control

B0019 02

B0019 0E

B0019 0D

B0019 04

B0019 01

IP Module - Stage 2 - Low Control

B0020 02

B0020 0E

B0020 0D

B0020 04

B0020 01

IP Module - Stage 2 - High Control

B0020 02

B0020 0E

B0020 0D

B0020 04

B0020 01

Seat Belt Pretensioner - Passenger - Low Control

B0022 02

B0022 0E

B0022 0D

B0022 04

B0022 01

Seat Belt Pretensioner - Passenger - High Control

B0022 02

B0022 0E

B0022 0D

B0022 04

B0022 01

Roof Rail Module - Right - Low Control

B0023 02

B0023 0E

B0023 0D

B0023 04

B0023 01

Roof Rail Module - Right - High Control

B0023 02

B0023 0E

B0023 0D

B0023 04

B0023 01

Circuit/System Description

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 an inflatable restraint module. 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

B0015 01, B0016 01, B0019 01, B0020 01, B0022 01, B0023 01

The inflatable restraint module high and/or low circuit is shorted to voltage for 120 milliseconds.

B0015 02, B0016 02, B0019 02, B0020 02, B0022 02, B0023 02

The inflatable restraint module high and/or low circuit is shorted to ground for 120 milliseconds.

B0015 04, B0016 04, B0019 04, B0020 04, B0022 04, B0023 04

The inflatable restraint module high and/or low circuit is open for 120 milliseconds.

B0015 0D, B0016 0D, B0019 0D, B0020 0D, B0022 0D, B0023 0D

The inflatable restraint module deployment loop resistance is greater than 3.9 ohms for 120 milliseconds.

B0015 0E, B0016 0E, B0019 0E, B0020 0E, B0022 0E, B0023 0E

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

Action Taken When the DTC Sets
    • The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
    • The SDM will store a DTC, if an event occurs system will still attempt deployments.

Conditions for Clearing the DTC
    • The condition 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

Component Connector End Views

Description and Operation

SIR System Description and Operation

Electrical Information Reference

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

Scan Tool Reference

Control Module References for scan tool information

Special Tools

Each inflatable restraint module requires a specific adapter to connect the load tool to the SIR system.

J 38715-A Driver and Passenger SIR Load Tool

Circuit/System Testing

Important: Refer to SIR Service Precautions.

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

   • Pretensioner
   • Inflatable restraint module
   • SDM module
   • Inflatable restraint module wiring harness connector
   • SDM wiring harness connector

  1. Ignition OFF, disconnect the harness connector at the appropriate inflatable restraint module.
  2. With the appropriate adaptor, connect J 38715-A in place of the inflatable restraint module.
  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 appropriate inflatable restraint module.
  4. Ignition OFF, disconnect J 38715-A and the appropriate adaptor.
  5. Disconnect the harness connector at the SDM.
  6. Ignition ON, test for less than 1 volt between the appropriate high control circuit and ground.
    7. • I/P module Stage 1 terminal 1 X1
    • I/P module Stage 2 terminal 1 X2
    • Left roof rail module terminal 2
    • Right roof rail module terminal 2
    • Left seat belt pretensioner terminal 1
    • Right seat belt pretensioner terminal 1
    ⇒If not the specified range, test the circuit for a short to voltage.
  7. Test for less than 1 volt between the appropriate low control circuit terminal and ground.
    8. • I/P module Stage 1 terminal 2 X1
    • I/P module Stage 2 terminal 2 X2
    • Left roof rail module terminal 1
    • Right roof rail module terminal 1
    • Left seat belt pretensioner terminal 2
    • Right seat belt pretensioner terminal 2
    ⇒If not the specified range, test the circuit for a short to voltage.
  8. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal and ground.
    9. • I/P module Stage 1 terminal 1 X1
    • I/P module Stage 2 terminal 1 X2
    • Left roof rail module terminal 2
    • Right roof rail module terminal 2
    • Left seat belt pretensioner terminal 1
    • Right seat belt pretensioner terminal 1
    ⇒If not the specified range, test the circuit for a short to ground.
  9. Test for infinite resistance between the appropriate low control circuit terminal and ground.
    10. • I/P module Stage 1 terminal 2 X1
    • I/P module Stage 2 terminal 2 X2
    • Left roof rail module terminal 1
    • Right roof rail module terminal 1
    • Left seat belt pretensioner terminal 2
    • Right seat belt pretensioner terminal 2
    ⇒If not the specified range, test the circuit for a short to ground.
  10. Test for less then 1 ohm between the following high control circuit terminals.
    11. • I/P module Stage 1 terminal 1 X1 and SDM terminal 10
    • I/P module Stage 2 terminal 1 X2 and SDM terminal 6
    • Left roof rail module terminal 2 and SDM terminal 13
    • Right roof rail module terminal 2 and SDM terminal 14
    • Left seat belt pretensioner terminal 1 and SDM terminal 17
    • Right seat belt pretensioner terminal 1 and SDM terminal 18
    ⇒If not the specified range, test the circuit for an open/high resistance.
  11. Test for less then 1 ohm between the following low control circuit terminals.
    12. • I/P module Stage 1 terminal 2 X1 and SDM terminal 11
    • I/P module Stage 2 terminal 2 X2 and SDM terminal 7
    • Left roof rail module terminal 1 and SDM terminal 12
    • Right roof rail module terminal 1 and SDM terminal 15
    • Left seat belt pretensioner terminal 2 and SDM terminal 16
    • Right seat belt pretensioner terminal 2 and SDM terminal 19
    ⇒If not the specified range, test the circuit for an open/high resistance.
  12. 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 - Front
    •  Seat Belt Retractor Pretensioner Replacement - Front
    •  SIR/SRS Wiring Repairs
    •  Control Module References for SDM replacement, setup, and programming