B001B
DTC B0015, B001A, B001B, or B0022
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 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 the control circuits together 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 01
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 for setting the DTC no longer exists.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
Diagnostic Aid
Note: The following diagnostic aids apply for both current and history DTCs.
An incorrectly installed connector position assurance (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 harness connectors
* Harness side of the SDM connector
Terminal fretting or incorrectly seated connectors can cause an open/high resistance condition. Check the circuit terminals for fretting 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 extent of travel while using the scan tool to observe deployment type loop parameters.
If the pretensioner, passenger instrument panel air bags or seat 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 Sunshade - Left (D6I)
Description and Operation
SIR System Description and Operation Description and Operation
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
Circuit/System Verification
Note: Refer to SIR Service Precautions Technician Safety Information.
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
* Knee air bag
* Seat 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. 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 appropriate scan tool Deployment Loop Resistance parameters stay consistently between 2.1-4.0 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 connector
* K36 inflatable restraint and sensing diagnostic module
• If less than 2.1 ohm or greater than 4.0 ohm
Refer to Circuit/System Testing.
• If there are spikes or dropouts, perform the following
* Inspect each connector terminal and harness for damage or corrosion and repair as necessary
* Apply Nyogel lubricant 760G to each connector terminal
* Ensure each connector and CPA is correctly seated.
• If between 2.1-4.0 ohm without any spikes or dropouts
2. All OK
Circuit/System Testing
1. Ignition OFF, scan tool disconnected, disconnect the appropriate harness connector listed below. It may take up to 2 minutes for all vehicle systems to power down.
* F112 Seat belt retractor pretensioner
* F113 Seat belt anchor pretensioner
2. Test for greater than 25 ohm between the control circuit terminals 1 and 2.
• If 25 ohm or less
1. Disconnect the X2 harness connector at the K36 inflatable restraint and sensing diagnostic module.
2. Test for infinite resistance between the two control circuits.
• If less than infinite resistance, repair the short between the two circuits.
• If infinite resistance, replace the K36 inflatable restraint and sensing diagnostic module.
• If greater than 25 ohm
3. Ignition ON.
4. Test for less than 11 V between each control circuit terminal listed below and ground:
* Control circuit terminal 1
* Control circuit terminal 2
• If 11 V or greater
1. Ignition OFF, disconnect the X2 harness connector at the K36 inflatable restraint and sensing diagnostic module, ignition ON
2. Test for less than 1 V between the control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, replace the K36 inflatable restraint and sensing diagnostic module.
• If less than 11 V
5. Ignition OFF.
6. Test for greater than 25 ohm between each control circuit terminal listed below and ground:
* Control circuit terminal 1
* Control circuit terminal 2
• If 25 ohm or less
1. Disconnect the X2 harness connector at the K36 inflatable restraint and sensing diagnostic module.
2. Test for infinite resistance between the control circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the K36 inflatable restraint and sensing diagnostic module.
• If greater than 25 ohm
7. Install a 3 A fused jumper wire between the control circuit terminals 1 and 2, ignition ON.
8. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
• If 2 ohm or greater
1. Ignition OFF, disconnect the X2 harness connector at the K36 inflatable restraint and sensing diagnostic module.
2. Test for less than 2 ohm in each control circuit end to end.
• If 2 ohm or greater, repair the open/high resistance in the circuit.
• If less than 2 ohm, replace the K36 inflatable restraint and sensing diagnostic module.
• If less than 2 ohm
9. Add Nyogel lubricant 760G to the terminals at the F112 seat belt retractor pretensioner or F113 seat belt anchor pretensioner harness connector. This will correct a high resistance condition due to terminal fretting corrosion.
10. Ignition OFF, connect the harness connector at the F112 seat belt retractor pretensioner or F113 seat belt anchor pretensioner, ignition ON.
11. Verify DTC B0015, B001A, B001B, or B0022 is not set.
• If DTC B0015, B001A, B001B, or B0022 is set
Replace the F112 seat belt retractor pretensioner or F113 seat belt anchor pretensioner.
• If DTC B0015, B001A, B001B, or B0022 is not set
12. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Front Seat Belt Anchor Plate Tensioner Replacement Front Seat Belt Anchor Plate Tensioner Replacement
* Driver or Passenger Seat Retractor Side Belt Replacement Driver or Passenger Seat Retractor Side Belt Replacement
* SIR/SRS Wiring Repairs SIR/SRS Wiring Repairs
* Control Module References Control Module References for SDM replacement, programming and setup