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B0019




DTC B0014-B0045

Diagnostic Instructions

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

DTC Descriptors
DTC B0015 01
- Driver Seat Belt Buckle Pretensioner Deployment Loop Short to Battery

DTC B0015 02
- Driver Seat Belt Buckle Pretensioner Deployment Loop Short to Ground

DTC B0015 04
- Driver Seat Belt Buckle Pretensioner Deployment Loop Open Circuit

DTC B0015 0D
- Driver Seat Belt Buckle Pretensioner Deployment Loop Resistance Above Threshold

DTC B0015 0E
- Driver Seat Belt Buckle Pretensioner Deployment Loop Resistance Below Threshold

DTC B0016 01
- Left Roof Rail Air Bag Deployment Loop Short to Battery

DTC B0016 02
- Left Roof Rail Air Bag Deployment Loop Short to Ground

DTC B0016 04
- Left Roof Rail Air Bag Deployment Loop Open Circuit

DTC B0016 0D
- Left Roof Rail Air Bag Deployment Loop Resistance Above Threshold

DTC B0016 0E
- Left Roof Rail Air Bag Deployment Loop Resistance Below Threshold

DTC B0019 01
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Battery

DTC B0019 02
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Ground

DTC B0019 04
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Open Circuit

DTC B0019 0D
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Resistance Above Threshold

DTC B0019 0E
- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Resistance Below Threshold

DTC B0020 01
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery

DTC B0020 02
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Ground

DTC B0020 04
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Open Circuit

DTC B0020 0D
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Resistance Above Threshold

DTC B0020 0E
- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Resistance Below Threshold

DTC B0022 01
- Passenger Seat Belt Buckle Pretensioner Deployment Loop Short to Battery

DTC B0022 02
- Passenger Seat Belt Buckle Pretensioner Deployment Loop Short to Ground

DTC B0022 04
- Passenger Seat Belt Buckle Pretensioner Deployment Loop Open Circuit

DTC B0022 0D
- Passenger Seat Belt Buckle Pretensioner Deployment Loop Resistance Above Threshold

DTC B0022 0E
- Passenger Seat Belt Buckle Pretensioner Deployment Loop Resistance Below Threshold

DTC B0023 01
- Right Roof Rail Air Bag Deployment Loop Short to Battery

DTC B0023 02
- Right Roof Rail Air Bag Deployment Loop Short to Ground

DTC B0023 04
- Right Roof Rail Air Bag Deployment Loop Open Circuit

DTC B0023 0D
- Right Roof Rail Air Bag Deployment Loop Resistance Above Threshold

DTC B0023 0E
- Right Roof Rail Air Bag Deployment Loop Resistance Below Threshold

DTC B0040 01
- Right Rear Roof Rail Air Bag Deployment Loop Short to Battery

DTC B0040 02
- Right Rear Roof Rail Air Bag Deployment Loop Short to Ground

DTC B0040 04
- Right Rear Roof Rail Air Bag Deployment Loop Open Circuit

DTC B0040 0D
- Right Rear Roof Rail Air Bag Deployment Loop Resistance Above Threshold

DTC B0040 0E
- Right Rear Roof Rail Air Bag Deployment Loop 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 the air bag. There are 2 shorting bars used within the connector which will short together both high and low circuits, when the connector is disconnected. This will prevent unwanted deployment of the air bag 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, B0040 01

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

B0015 02, B0016 02, B0019 02, B0020 02, B0022 02, B0023 02, B0040 02

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

B0015 04, B0016 04, B0019 04, B0020 04, B0022 04, B0023 04, B0040 04

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

B0015 0D, B0016 0D, B0019 0D, B0020 0D, B0022 0D, B0023 0D, B0040 0D

The air bag or pretensioner deployment loop resistance is greater than 3.9 ohms for 120 milliseconds.

B0015 0E, B0016 0E, B0019 0E, B0020 0E, B0022 0E, B0023 0E, B0040 0E

The air bag or pretensioner air bag or pretensioner 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, however if an event occurs the 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 fault-free ignition cycles have occurred.

Diagnostic Aids

* When a harness connector is disconnected, the high control and low control circuits are shorted together by the integral shorting bar. This should be taken into account when testing for faults on these circuits.
* This DTC usually indicates a poor connection or a wiring malfunction between the SDM and the deployment loop.

Reference Information
Schematic Reference

SIR Schematics ([1][2]Air Bag Systems)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

SIR System Description and Operation (SIR System)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information
Special Tools

J 38715-A Driver and Passenger SIR Load Tool

Circuit/System Testing

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


* Pretensioner

* Air bag

* SDM

* Pretensioner wiring harness connector

* Air bag wiring harness connector

* SDM wiring harness connector


Important: The connector and connector position assurance (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. Verify that the appropriate air bag or pretensioner connector and CPA are engaged.

• If the above condition is not found, make the appropriate repair.

2. Ignition OFF, disconnect the harness connector at the appropriate air bag or pretensioner.
3. Install a 3A fused jumper between the J 38715-A and the harness connector of the appropriate air bag or pretensioner.
4. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.

• If the DTC is not set or is set as history, cycle ignition OFF, disconnect the load tool and fused jumper, reconnect the harness connector at the air bag or pretensioner, and cycle the ignition ON. If the DTC resets after reconnecting the air bag or pretensioner, replace the air bag or pretensioner.

5. Ignition OFF, disconnect the load tool and fused jumper.
Disconnect the harness connector at the SDM.
6. Ignition ON, test for less than 1 volt between the appropriate high control circuit terminal listed below and ground:

* Passenger instrument panel air bag stage 1 terminal A1 (light duty)
* Passenger instrument panel air bag stage 1 terminal A (heavy duty)
* Passenger instrument panel air bag stage 2 terminal B1
* Left roof rail air bag terminal B
* Right roof rail air bag terminal B
* Right rear roof rail air bag terminal B
* Driver seat belt buckle pretensioner terminal A
* Passenger seat belt buckle pretensioner terminal A

• If greater than the specified range, test the control circuit for a short to voltage.

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

* Passenger instrument panel air bag stage 1 terminal A2 (light duty)
* Passenger instrument panel air bag stage 1 terminal B (heavy duty)
* Passenger instrument panel air bag stage 2 terminal B2
* Left roof rail air bag terminal A
* Right roof rail air bag terminal A
* Right rear roof rail air bag terminal A
* Driver seat belt buckle pretensioner terminal B
* Passenger seat belt buckle pretensioner terminal B

• If greater than the specified range, test the control circuit for a short to voltage.

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

* Passenger instrument panel air bag stage 1 terminal A1 (light duty)
* Passenger instrument panel air bag stage 1 terminal A (heavy duty)
* Passenger instrument panel air bag stage 2 terminal B1
* Left roof rail air bag terminal B
* Right roof rail air bag terminal B
* Right rear roof rail air bag terminal B
* Driver seat belt buckle pretensioner terminal A
* Passenger seat belt buckle pretensioner terminal A

• If less than the specified value, test the control circuit for a short to ground.

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

* Passenger instrument panel air bag stage 1 terminal A2 (light duty)
* Passenger instrument panel air bag stage 1 terminal B (heavy duty)
* Passenger instrument panel air bag stage 2 terminal B2
* Left roof rail air bag terminal A
* Right roof rail air bag terminal A
* Right rear roof rail air bag terminal A
* Driver seat belt buckle pretensioner terminal B
* Passenger seat belt buckle pretensioner terminal B

• If less than the specified value, test the control circuit for a short to ground.

10. Test for less then 5 ohms between the following high control circuit terminals listed below:

* Passenger instrument panel air bag stage 1 terminal A1 (light duty) and SDM terminal 10 (light duty).
* Passenger instrument panel air bag stage 1 terminal A (heavy duty) and SDM terminal 10 (heavy duty).
* Passenger instrument panel air bag stage 2 terminal B1 and SDM terminal 6.
* Left roof rail air bag terminal B and SDM terminal 13.
* Right roof rail air bag terminal B and SDM terminal 14.
* Right rear roof rail air bag terminal B and SDM terminal 22.
* Driver seat belt buckle pretensioner terminal A and SDM terminal 25.
* Passenger seat belt buckle pretensioner terminal A and SDM terminal 26.

• If greater than the specified range, test the control circuit for an open/high resistance.

11. Test for less then 5 ohms between the following low control circuit terminals listed below:

* Passenger instrument panel air bag stage 1 terminal A2 (light duty) and SDM terminal 11 (light duty).
* Passenger instrument panel air bag stage 1 terminal B (heavy duty) and SDM terminal 11 (heavy duty).
* Passenger instrument panel air bag stage 2 terminal B2 and SDM terminal 7.
* Left roof rail air bag terminal A and SDM terminal 12.
* Right roof rail air bag terminal A and SDM terminal 15.
* Right rear roof rail air bag terminal A and SDM terminal 23.
* Driver seat belt buckle pretensioner terminal B and SDM terminal 24.
* Passenger seat belt buckle pretensioner terminal B and SDM terminal 27.

• If greater than the specified range, test the control circuit for an open/high resistance.

12. If all circuits test normal, replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* SIR/SRS Wiring Repairs (SIR/SRS Wiring Repairs)
* Instrument Panel Inflatable Restraint Module Replacement (Instrument Panel Inflatable Restraint Module Replacement)
* Steering Wheel Inflatable Restraint Module Replacement (Steering Wheel Inflatable Restraint Module Replacement)
* Steering Wheel Inflatable Restraint Module Coil Replacement (Removal and Replacement)
* Inflatable Restraint Roof Side Rail Module Replacement - Front (Inflatable Restraint Roof Side Rail Module Replacement - Front)
* Roof Side Rail Inflatable Restraint Module Replacement (without YA2) (Roof Side Rail Inflatable Restraint Module Replacement (without YA2))
* Inflatable Restraint Roof Side Rail Module Replacement - Rear (Inflatable Restraint Roof Side Rail Module Replacement - Rear)
* Seat Belt Buckle Pretensioner Replacement (Removal and Replacement)
* Control Module References (Programming and Relearning) for SDM replacement, programming, and setup

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