Chevrolet Trax: DTC B0015, B001A, B001B, OR B0022: Seat belt retractor pretensioner
deployment loop
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 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 ohms for 2
seconds.
B0015 0E, B001A 0E, B001B 0E, B0022 0E
The pretensioner deployment loop resistance is less than 1.4 ohms for 2
seconds.
Action Taken When the DTC Sets
- The Inflatable Restraint and Sensing Diagnostic Module requests the
instrument cluster to illuminate the
AIR BAG indicator.
- The Inflatable Restraint and Sensing Diagnostic Module 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 Inflatable Restraint and Sensing Diagnostic Module
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.
Reference Information
Schematic Reference
SIR Schematics (Encore), SIR Schematics (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS -
INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT
CONNECTOR END VIEWS - INDEX - TRAX
Description and Operation
Supplemental Inflatable Restraint System 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
Special Tools
EL-38125-580 Terminal Release Tool Kit
Circuit/System Verification
NOTE:
- Refer to SIR 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
- Inflatable restraint and sensing diagnostic module
- 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
- Inflatable Restraint and Sensing Diagnostic Module wiring harness
connector
- 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 dielectric grease / lubricant (Nyogel 760G or
equivalent, meeting GM specification 9986087). This procedure will correct
the high resistance condition due to terminal fretting corrosion.
- Verify the appropriate scan tool Deployment Loop Resistance parameters
stay consistently between 2.1-4.0 ohms 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 ohms or greater than 4.0 ohms
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
- Ensure each connector and CPA is correctly seated.
- If between 2.1-4.0 ohms without any spikes or dropouts
- All OK
Circuit/System Testing
- Ignition OFF, scan tool disconnected, disconnect the appropriate harness
connector listed below. It may
take up to 2 min for all vehicle systems to power down.
- F112 Seat Belt Retractor Pretensioner
- F113 Seat Belt Anchor Pretensioner
- Test for greater than 25 ohms between the control circuit terminals 1
and 2.
- Disconnect the X2 harness connector at the K36 Inflatable Restraint and
Sensing Diagnostic
Module.
NOTE:
Some connectors may be equipped with shorting bars as a safety
component to prevent accidental inflator deployment. When testing
on a connector with shorting bars, the shorting bars must be
disabled to ensure accurate test results. Insert an appropriate pick
from EL-38125-580 and depress the shorting bars above the
appropriate terminals. This will lift the shorting bar from the terminal
and allow accurate test results. Take care not to damage the
connector, shorting bar, or terminal when depressing the shorting
bar.
- 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 ohms
- Ignition ON.
- 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
- Ignition OFF, disconnect the X2 harness connector at the K36 Inflatable
Restraint and Sensing
Diagnostic Module, ignition ON
- 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
- Ignition OFF.
- Test for greater than 25 ohms between each control circuit terminal
listed below and ground:
- Control circuit terminal 1
- Control circuit terminal 2
- If 25 ohms or less
- Disconnect the X2 harness connector at the K36 Inflatable Restraint and
Sensing Diagnostic
Module.
- 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 ohms
- Install a 3 A fused jumper wire between the control circuit terminals 1
and 2, ignition ON.
- Verify DTC B0015 0E, B001A 0E, B001B 0E, or B0022 0E is set.
If B0015 0E, B001A 0E, B001B 0E, or B0022 0E is not set
- Ignition OFF, disconnect the X2 harness connector at the K36 Inflatable
Restraint and Sensing
Diagnostic Module.
- Test for less than 2 ohms in each control circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, replace the K36 Inflatable Restraint and Sensing
Diagnostic Module.
- If B0015 0E, B001A 0E, B001B 0E, or B0022 0E is set
- Ignition OFF, connect the harness connector at the F112 Seat Belt
Retractor Pretensioner or F113 Seat
Belt Anchor Pretensioner, press in the CPA (if equipped) until an audible
and/or tactile click is heard.
- Ignition ON, clear DTCs. Operate the vehicle within the Conditions for
Running the DTC.
- 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
- All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
- Front Seat Belt Anchor Plate Tensioner Replacement
- Front Seat Belt Retractor Replacement (With A69)
- SIR/SRS Wiring Repairs
- Control Module References for Inflatable Restraint and Sensing
Diagnostic Module replacement,
programming and setup
READ NEXT:
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.
Diag
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.
Diag
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.
Diag
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For equivalent regional tools, refer to Special Tools.
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plate with engine oil.
Fig. 385: Crankshaf
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