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B0023



DTC B0014-B0045

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* 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

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

Diagnostic Fault Information






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

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

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

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

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

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

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

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

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

B0014 0E, B0015 0E, B0016 0E, B0019 0E, B0020 0E, B0021 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 commands the AIR BAG indicator ON via serial data communications.
* 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.

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.

* The pretensioner

* The inflatable restraint module

* The SDM module

* The inflatable restraint module wiring harness connector

* The SDM wiring harness connector

Important: The connector and CPA may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.

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.

• 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.

* I/P module Stage 1 terminal B (X1)
* I/P module Stage 2 terminal B (X2)
* Left roof rail module terminal B
* Right roof rail module terminal B
* Left side impact module terminal B
* Right side impact module terminal B
* 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.

7. Test for less than 1 volt between the appropriate low control circuit terminal and ground.

* I/P module Stage 1 terminal A (X1)
* I/P module Stage 2 terminal A (X2)
* Left roof rail module terminal A
* Right roof rail module terminal A
* Left side impact module terminal A
* Right side impact module terminal A
* 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.

8. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal and ground.

* I/P module Stage 1 terminal B (X1)
* I/P module Stage 2 terminal B (X2)
* Left roof rail module terminal B
* Right roof rail module terminal B
* Left side impact module terminal B
* Right side impact module terminal B
* 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.

9. Test for infinite resistance between the appropriate low control circuit terminal and ground.

* I/P module Stage 1 terminal A (X1)
* I/P module Stage 2 terminal A (X2)
* Left roof rail module terminal A
* Right roof rail module terminal A
* Left side impact module terminal A
* Right side impact module terminal A
* 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.

10. Test for less than 1 ohm between the following high control circuit terminals.

* I/P module Stage 1 terminal B (X1) and SDM terminal 10
* I/P module Stage 2 terminal B (X2) and SDM terminal 6
* Left roof rail module terminal B and SDM terminal 21
* Right roof rail module terminal B and SDM terminal 22
* Left side impact module terminal B and SDM terminal 13
* Right side impact module terminal B and SDM terminal 14
* Left seat belt pretensioner terminal 2 and SDM terminal 25
* Right seat belt pretensioner terminal 2 and SDM terminal 26

• If not the specified range, test the circuit for an open/high resistance.

11. Test for less than 1 ohm between the following low control circuit terminals.

* I/P module Stage 1 terminal A (X1) and SDM terminal 11
* I/P module Stage 2 terminal A (X2) and SDM terminal 7
* Left roof rail module terminal A and SDM terminal 20
* Right roof rail module terminal A and SDM terminal 23
* Left side impact module terminal A and SDM terminal 12
* Right side impact module terminal A and SDM terminal 15
* Left seat belt pretensioner terminal 1 and SDM terminal 24
* Right seat belt pretensioner terminal 1 and SDM terminal 27

• 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. Verification Tests

* Inflatable Restraint Instrument Panel Module Replacement (Impala)
* Inflatable Restraint Roof Side Rail Module Replacement (Impala)
* Seat Belt Retractor Pretensioner Replacement - Front (Impala)
* SIR/SRS Wiring Repairs
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