Operation CHARM: Car repair manuals for everyone.
Home >> Cadillac >> 2012 >> CTS Wagon RWD V6-3.6L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> B Code Charts >> B0040

B0040




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 B0014 01
- Driver Seat Side Air Bag Deployment Loop Short to Battery

DTC B0014 02
- Driver Seat Side Air Bag Deployment Loop Short to Ground

DTC B0014 04
- Driver Seat Side Air Bag Deployment Loop Open Circuit

DTC B0014 0D
- Driver Seat Side Air Bag Deployment Loop Resistance Above Threshold

DTC B0014 0E
- Driver Seat Side Air Bag Deployment Loop Resistance Below Threshold

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

DTC B0015 02
- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Groundr

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

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

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

DTC B0016 01
- Left Roof Rail Air Bag Deployment Loop Stage 1 Short to Battery

DTC B0016 02
- Left Roof Rail Air Bag Deployment Loop Stage 1 Short to Ground

DTC B0016 04
- Left Roof Rail Air Bag Deployment Loop Stage 1 Open Circuit

DTC B0016 0D
- Left Roof Rail Air Bag Deployment Loop Stage 1 Resistance Above Threshold

DTC B0016 0E
- Left Roof Rail Air Bag Deployment Loop Stage 1 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 B0021 01
- Passenger Seat Side Air Bag Deployment Loop Short to Battery

DTC B0021 02
- Passenger Seat Side Air Bag Deployment Loop Short to Ground

DTC B0021 04
- Passenger Seat Side Air Bag Deployment Loop Open Circuit

DTC B0021 0D
- Passenger Seat Side Air Bag Deployment Loop Resistance Above Threshold

DTC B0021 0E
- Passenger Seat Side Air Bag Deployment Loop Resistance Below Threshold

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

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

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

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

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

DTC B0023 01
- Right Roof Rail Air Bag Deployment Loop Stage 1 Short to Battery

DTC B0023 02
- Right Roof Rail Air Bag Deployment Loop Stage 1 Short to Ground

DTC B0023 04
- Right Roof Rail Air Bag Deployment Loop Stage 1 Open Circuit

DTC B0023 0D
- Right Roof Rail Air Bag Deployment Loop Stage 1 Resistance Above Threshold

DTC B0023 0E
- Right Roof Rail Air Bag 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 air bag or pretensioner. 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 help to prevent unwanted deployment of the air bag or pretensioner during servicing.

Conditions for Running the DTC

Ignition voltage is between 9-16 V.

Conditions for Setting the DTC

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

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

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

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

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

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

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

The air bag or pretensioner deployment loop resistance is less than 1.1 ohm for 120 milliseconds.

Action Taken When the DTC Sets

* The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator ON.
* 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 malfunction-free ignition cycles have occurred.

Reference Information
Schematic Reference

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

Component Connector End Views Connector Views
Description and Operation

SIR System Description and Operation SIR System
Electrical Information Reference

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

Scan Tool Reference

Control Module References Control Module References for scan tool information
Special Tools

* J 38715-A SIR Driver/Passenger Load Tool
* SA9409Z-A SIR Driver/Passenger Load Tool

Circuit/System Testing

Note:
* Refer to SIR Service Precautions Technician Safety Information.
* When removing connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector:

- Seat belt retractor pretensioner
- Air Bag
- SDM
- Seat belt retractor pretensioner wiring harness connector
- Air bag wiring harness connector
- SDM wiring harness connector

Note: 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 the CPA are engaged.

• If the connector or CPA is not properly engaged, make the appropriate repair.

2. Ignition OFF, disconnect the harness connector at the appropriate air bag or pretensioner.
3. With the appropriate load tool adaptor, connect J 38715-A in place of the air bag or pretensioner.
4. Ignition ON, with a scan tool, verify DTC is set as current.

• If the DTC is not set or is set as history, cycle ignition OFF, disconnect the J 38715-A and the adapter, reconnect the harness connector at the air bag or pretensioner and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the air bag or pretensioner.

5. Disconnect the harness connector at the SDM.
6. Ignition ON, test for less than 1 V between the appropriate high control circuit terminal and ground.

* Passenger instrument panel air bag Stage 1 terminal 1 X1
* Passenger instrument panel air bag Stage 2 terminal 2 X2
* Left roof rail air bag terminal A
* Right roof rail air bag terminal A (RHD)
* Right roof rail module terminal B
* Driver seat side air bag terminal 2
* Passenger seat side air bag terminal 2
* Driver seat belt retractor pretensioner terminal 1
* Passenger seat belt retractor pretensioner terminal 1

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

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

* Passenger instrument panel air bag Stage 1 terminal 2 X1
* Passenger instrument panel air bag Stage 2 terminal 1 X2
* Left roof rail air bag terminal B
* Right roof rail air bag terminal A
* Driver seat side air bag terminal 1
* Passenger seat side air bag terminal 1
* Driver seat belt retractor pretensioner terminal 2
* Passenger seat belt retractor pretensioner terminal 2

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

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

* Passenger instrument panel air bag Stage 1 terminal 1 X1
* Passenger instrument panel air bag Stage 2 terminal 2 X2
* Left roof rail air bag terminal A
* Right roof rail air bag terminal A (RHD)
* Right roof rail module terminal B
* Driver seat side air bag terminal 2
* Passenger seat side air bag terminal 2
* Driver seat belt retractor pretensioner terminal 1
* Passenger seat belt retractor pretensioner terminal 1

• If not the specified value, test the control circuit for a short to ground.

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

* Passenger instrument panel air bag Stage 1 terminal 2 X1
* Passenger instrument panel air bag Stage 2 terminal 1 X2
* Left roof rail air bag terminal B
* Right roof rail air bag terminal A
* Driver seat side air bag terminal 1
* Passenger seat side air bag terminal 1
* Driver seat belt retractor pretensioner terminal 2
* Passenger seat belt retractor pretensioner terminal 2

• If not the specified value, test the control circuit for a short to ground.

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

* Passenger instrument panel air bag Stage 1 terminal 1 X1 and SDM terminal 5
* Passenger instrument panel air bag Stage 2 terminal 2 X2 and SDM terminal 8
* Left roof rail air bag terminal A and SDM terminal 17 X2
* Right roof rail air bag terminal A and SDM terminal 53 X2
* Driver seat side air bag terminal 2 and SDM terminal 13 X2
* Passenger seat side air bag terminal 2 and SDM terminal 16 X2
* Driver seat belt retractor pretensioner terminal 1 and SDM terminal 9 X2
* Passenger seat belt retractor pretensioner terminal 1 and SDM terminal 12 X2

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

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

* Passenger instrument panel air bag Stage 1 terminal 2 X1 and SDM terminal 6
* Passenger instrument panel air bag Stage 2 terminal 1 X2 and SDM terminal 7
* Left roof rail air bag terminal B and SDM terminal 18 X2
* Right roof rail air bag terminal B and SDM terminal 54 X2
* Driver seat side air bag terminal 1 and SDM terminal 14 X2
* Passenger seat side air bag terminal 1 and SDM terminal 15 X2
* Driver seat belt retractor pretensioner terminal 2 and SDM terminal 10 X2
* Passenger seat belt retractor pretensioner terminal 2 and SDM terminal 11 X2

• 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.

* Instrument Panel Inflatable Restraint Module Replacement Instrument Panel Inflatable Restraint Module Replacement
* Roof Side Rail Inflatable Restraint Module Replacement Roof Side Rail Inflatable Restraint Module Replacement
* Seat Belt Retractor Pretensioner Replacement - Front (W2E) Seat Belt Retractor Pretensioner Replacement - Front (W2E)Seat Belt Retractor Pretensioner Replacement - Front (AQ9 and Coupe prior to VIN B0100175) Seat Belt Retractor Pretensioner Replacement - Front (AQ9 and Coupe prior to VIN B0100175)Seat Belt Retractor Pretensioner Replacement - Front (AQ9 and Coupe) Seat Belt Retractor Pretensioner Replacement - Front (AQ9 and Coupe)
* SIR/SRS Wiring Repairs SIR/SRS Wiring Repairs
* Control Module References Control Module References for SDM replacement, setup, and programming

pro multis · About Operation CHARM