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B001B



DTC B0015, B001A, B001B, or B0022

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
Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Battery

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

DTC B0015 04
Driver Seat Belt Retractor Pretensioner Deployment Loop Open

DTC B0015 0D
Driver Seat Belt Retractor Pretensioner Deployment Loop High Resistance

DTC B0015 0E
Driver Seat Belt Retractor Pretensioner Deployment Loop Low Resistance

DTC B001A 01
Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery

DTC B001A 02
Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Ground

DTC B001A 04
Driver Seat Belt Anchor Pretensioner Deployment Loop Open

DTC B001A 0D
Driver Seat Belt Anchor Pretensioner Deployment Loop High Resistance

DTC B001A 0E
Driver Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

DTC B001B 01
Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Battery

DTC B001B 02
Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Ground

DTC B001B 04
Passenger Seat Belt Anchor Pretensioner Deployment Loop Open

DTC B001B 0D
Passenger Seat Belt Anchor Pretensioner Deployment Loop High Resistance

DTC B001B 0E
Passenger Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

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 High Resistance

DTC B0022 0E
Passenger Seat Belt Retractor Pretensioner Deployment Loop Low Resistance

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 which will short together control 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

B0015 01, B001A 01, B001B 01, B0022 10
The pretensioner control circuit is shorted to voltage for 2 seconds.

B0015 02, B001A 02, B001B 02, B0022 02
The pretensioner control circuit is shorted to ground for 2 seconds.

B0015 04, B001A 04, B001B 04, B0022 04
The pretensioner control circuit is open for 2 seconds.

B0015 0D, B001A 0D, B001B 0D, B0022 0D
The pretensioner deployment loop resistance is greater than 4.2 Ohm for 2 seconds.

B0015 0E, B001A 0E, B001B 0E, B0022 0E
The pretensioner deployment loop resistance is less than 1.4 Ohm for 2 seconds.

Action Taken When the DTC Sets
- The SDM requests the instrument cluster 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 responsible for setting the DTC no longer exists.
- A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aids

NOTE: The following diagnostic aids apply for both current and history DTCs.

An incorrectly installed CPA or incorrectly seated connector can cause a shorting bar to short both control circuits together. Check the connectors and CPAs if a DTC with symptom byte 02 or 0E is set, to ensure the shorting bars are not causing the circuits to be shorted together. Shorting bars are used in the locations listed below:
- Driver and passenger anchor or retractor pretensioners
- Inline connectors - on the side of the harness connector
- Harness side of the SDM connector

Terminal fretting or incorrectly seated connectors can cause an open/high resistance condition. Check the circuit terminals for corrosion or incorrectly seated connector if a DTC with symptom byte 04 or 0D is set. DTCs of deployment loops which are in the seat can occur because of stress or damage to the harness due to seat movement. Move the seat to the full extend of travel while using the scan tool to observe deployment type loop parameters.

If the pretensioner, passenger instrument panel air bags or side air bag has inflated under unexpected conditions and/or DTC with symptom byte 01 is set, check both control circuits for a short to voltage.

Reference Information

Schematic Reference
SIR Schematics [1][2]Air Bag Systems

Connector End View Reference
Component Connector End Views

Description and Operation
SIR System Description and Operation 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

Circuit/System Verification

NOTE: Refer to SIR Service Precautions Service Precautions.

Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
- Seat belt retractor pretensioner
- Passenger instrument panel air bag
- Side air bag
- Roof rail air bag
- SDM
- Seat belt retractor pretensioner wiring harness connector
- Passenger instrument panel air bag wiring harness connector
- Seat side air bag wiring harness connector
- Roof rail air bag wiring harness connector
- SDM wiring harness connector

NOTE: The connector and connector position assurance (CPA) may seat independent of each other. The connector and connector position assurance (CPA) may seat independently 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.

If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the high resistance condition due to terminal fretting corrosion.

1. Verify the scan tool Deployment Loop Resistance parameters stay consistently between 2.1 and 4.0 Ohm without any spikes or dropouts while moving the harness near each connector listed below:
- F112 Seat belt retractor pretensioner
- F113 Seat belt anchor pretensioner
- Any inline harness
- K36 SDM
- Inspect each connector terminal and harness for damage or corrosion and repair as necessary
- Apply Nyogel lubricant 760G to each connector terminal
- Insure each connector and CPA is correctly seated.

2. All OK

Circuit/System Testing

1. Ignition OFF.
2. Disconnect the scan tool.
3. Disconnect the appropriate harness connector listed below:
- F112 Seat belt retractor pretensioner
- F113 Seat belt anchor pretensioner

4. Wait for 120 seconds.
5. Test for greater than 25 ohm between the control circuit terminals 1 and 2.
5.1 Disconnect the X2 harness connector at the K36 SDM.
5.2 Test for infinite resistance between the two control circuits.

6. Ignition ON.
7. Test for less than 11 V between the control circuit terminals listed below and ground:
- Control circuit terminal 1
- Control circuit terminal 2
7.1. Control circuit terminal 2
7.2. Disconnect the X2 harness connector at the K36 SDM.
7.3. Ignition ON.
7.4. Test for less than 1 V between the control circuit and ground.

8. Ignition OFF.
9. Test for greater than 25 � between the control circuit terminals listed below and ground:
- Control circuit terminal 1
- Control circuit terminal 2
9.1. Disconnect the X2 harness connector at the K36 SDM.
9.2. Test for infinite resistance between the control circuit and ground.

10. Ignition OFF.
11. Install a 3 A fused jumper wire between the appropriate control circuit terminals 1 and 2.
12. Ignition ON.
13. Verify the scan tool Deployment Loop Resistance parameter is less than 2 Ohm.
13.1. Ignition OFF.
13.2. Disconnect the X2 harness connector at the K36 SDM.
13.3. Test for less than 2 Ohm in each control circuit end to end.

14. Replace the appropriate F112 seat belt retractor pretensioner or F113 seat belt anchor pretensioner.

Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

- Front Seat Belt Anchor Plate Tensioner Replacement
- Driver or Passenger Seat Retractor Side Belt Replacement
- SIR/SRS Wiring Repairs
- Control Module References for SDM replacement, programming and setup
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