B0022
DTC B0014-B0045
Diagnostic Instructions
^ Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
^ Review Strategy Based Diagnosis for an overview of the diagnostic approach.
^ Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
B0015 01: Driver Pretensioner Deployment Loop Short to Battery
B0015 02: Driver Pretensioner Deployment Loop Short to Ground
B0015 04: Driver Pretensioner Deployment Loop Open Circuit
B0015 0D: Driver Pretensioner Deployment Loop Resistance Above Threshold
B0015 0E: Driver Pretensioner Deployment Loop Resistance Below Threshold
B0016 01: GLeft Roof Rail Initiator 1 Deployment Loop Short to Battery
B0016 02: Left Roof Rail Initiator 1 Deployment Loop Short to Ground
B0016 04: Left Roof Rail Initiator 1 Deployment Loop Open Circuit
B0016 0D: Left Roof Rail Initiator 1 Deployment Loop Resistance Above Threshold
B0016 0E: Left Roof Rail Initiator 1 Deployment Loop Resistance Below Threshold
B0019 01: Passenger Frontal Deployment Loop Stage 1 Short to Battery
B0019 02: Passenger Frontal Deployment Loop Stage 1 Short to Ground
B0019 04: Passenger Frontal Deployment Loop Stage 1 Open Circuit
B0019 0D: Passenger Frontal Deployment Loop Stage 1 Resistance Above Threshold
B0019 0E: Passenger Frontal Deployment Loop Stage 1 Resistance Below Threshold
B0020 01: Passenger Frontal Deployment Loop Stage 2 Short to Battery
B0020 02: Passenger Frontal Deployment Loop Stage 2 Short to Ground
B0020 04: Passenger Frontal Deployment Loop Stage 2 Open Circuit
B0020 0D: Passenger Frontal Deployment Loop Stage 2 Resistance Above Threshold
B0020 0E: Passenger Frontal Deployment Loop Stage 2 Resistance Below Threshold
B0022 01: Passenger Pretensioner Deployment Loop Short to Battery
B0022 02: Passenger Pretensioner Deployment Loop Short to Ground
B0022 04: Passenger Pretensioner Deployment Loop Open Circuit
B0022 0D: Passenger Pretensioner Deployment Loop Resistance Above Threshold
B0022 0E: Passenger Pretensioner Deployment Loop Resistance Below Threshold
B0023 01: Right Roof Rail Initiator 1 Deployment Loop Short to Battery
B0023 02: Right Roof Rail Initiator 1 Deployment Loop Short to Ground
B0023 04: Right Roof Rail Initiator 1 Deployment Loop Open Circuit
B0023 0D: Right Roof Rail Initiator 1 Deployment Loop Resistance Above Threshold
B0023 0E: Right Roof Rail Initiator 1 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 module. There are 2 shorting bars used within the module connector which will short together both high and low circuits, when the connector is disconnected. This will prevent unwanted deployment of the inflator module 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
The air bag module high and/or low circuit is short to voltage for 120 milliseconds.
B0015 02, B0016 02, B0019 02, B0020 02, B0022 02, B0023 02
The air bag module high and/or low circuit is short to ground for 120 milliseconds.
B0015 04, B0016 04, B0019 04, B0020 04, B0022 04, B0023 04
The air bag module high and/or low circuit is open for 120 milliseconds.
B0015 0D, B0016 0D, B0019 0D, B0020 0D, B0022 0D, B0023 0D
The air bag module deployment loop resistance is greater than 3.9 ohms for 120 milliseconds.
B0015 0E, B0016 0E, B0019 0E, B0020 0E, B0022 0E, B0023 0E
The air bag module 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 Diagrams
Connector End View Reference
Component Connector End Views Diagrams
Description and Operation
SIR System Description and Operation Description and Operation
Electrical Information Reference
^ Circuit Testing Component Tests and General Diagnostics
^ Connector Repairs Component Tests and General Diagnostics
^ Testing for Intermittent Conditions and Poor Connections Component Tests and General Diagnostics
^ Wiring Repairs Component Tests and General Diagnostics
Scan Tool Reference
Control Module References for scan tool information Control Module References
Special Tools Required
J 38715-A Driver and Passenger SIR Load Tool
Circuit/System Testing
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
^ The pretensioner
^ The air bag module
^ The SDM module
^ The air bag wiring harness connector
^ The SDM 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 connetor allowing the deployment circuit to operate properly.
1. Verify that the appropriate inflator restraint module 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 module. Refer to the appropriate air bag module replacement procedure.
3. With the appropriate load tool adaptor, connect special tool J 38715-A in place if the inflator restraint module.
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 adapter and J 38715-A, reconnect the harness connector at the inflator restraint module, and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the inflator restraint module.
5. Ignition OFF, disconnect special tool J 38715-A and the adaptor.
6. Disconnect the harness connector at the SDM.
7. Ignition OFF, disconnect the harness connector at the appropriate air bag module. Refer to the appropriate air bag module replacement procedure.
8. Ignition ON, test for less than 1 volt between the appropriate high control circuit terminal listed below and ground:
^ I/P Module - Stage 1 terminal A1 (with 10 series)
^ I/P Module - Stage 1 terminal A (without 10 series)
^ I/P Module - Stage 2 terminal B1
^ Left Front Roof Rail Module terminal B (regular cab)
^ Left Front Roof Rail Module terminal 1 (extended cab)
^ Right Front Roof Rail Module terminal B (regular cab)
^ Right Front Roof Rail Module terminal 1 (extended cab)
^ Seat Belt Pretensioner - Left terminal B
^ Seat Belt Pretensioner - Right terminal B
--> If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the SDM.
9. Test for less than 1 volt between the appropriate low control circuit terminal and ground.
^ I/P Module - Stage 1 terminal A2 (with 10 series)
^ I/P Module - Stage 1 terminal B (without 10 series)
^ I/P Module - Stage 2 terminal B2
^ Left Front Roof Rail Module terminal A (regular cab)
^ Left Front Roof Rail Module terminal 2 (extended cab)
^ Right Front Roof Rail Module terminal A (regular cab)
^ Right Front Roof Rail Module terminal 2 (extended cab)
^ Seat Belt Pretensioner - Left terminal A
^ Seat Belt Pretensioner - Right terminal A
--> If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the SDM.
10. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal and ground.
^ I/P Module - Stage 1 terminal A1 (with 10 series)
^ I/P Module - Stage 1 terminal A (without 10 series)
^ I/P Module - Stage 2 terminal B1
^ Left Front Roof Rail Module terminal B (regular cab)
^ Left Front Roof Rail Module terminal 1 (extended cab)
^ Right Front Roof Rail Module terminal B (regular cab)
^ Right Front Roof Rail Module terminal 1 (extended cab)
^ Seat Belt Pretensioner - Left terminal B
^ Seat Belt Pretensioner - Right terminal B
--> If not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the SDM.
11. Test for infinite resistance between the appropriate low control circuit terminal and ground.
^ I/P Module - Stage 1 terminal A2 (with 10 series)
^ I/P Module - Stage 1 terminal B (without 10 series)
^ I/P Module - Stage 2 terminal B2
^ Left Front Roof Rail Module terminal A (regular cab)
^ Left Front Roof Rail Module terminal 2 (extended cab)
^ Right Front Roof Rail Module terminal A (regular cab)
^ Right Front Roof Rail Module terminal 2 (extended cab)
^ Seat Belt Pretensioner - Left terminal A
^ Seat Belt Pretensioner - Right terminal A
--> If not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the SDM.
12. Test for less than 1 ohm between the following high control circuit terminals listed below:
^ I/P Module - Stage 1 terminal A1 and SDM terminal 10 (with 10 series)
^ I/P Module - Stage 1 terminal A and SDM terminal 10 (without 10 series)
^ I/P Module - Stage 2 terminal B1 and SDM terminal 6
^ Left Front Roof Rail Module terminal B and SDM terminal 13 (regular cab)
^ Left Front Roof Rail Module terminal 1 and SDM terminal 13 (extended cab)
^ Right Front Roof Rail Module terminal B and SDM terminal 14 (regular cab)
^ Right Front Roof Rail Module terminal 1 and SDM terminal 14 (extended cab)
^ Seat Belt Pretensioner - Left terminal B and SDM terminal 17
^ Seat Belt Pretensioner - Right terminal B and SDM terminal 18
--> If greater than the specified range, test the circuit for an open/high resistance.
13. Test for less than 1 ohm between the following low control circuit terminals listed below:
^ I/P Module - Stage 1 terminal A2 and SDM terminal 11 (with 10 series)
^ I/P Module - Stage 1 terminal B and SDM terminal 11 (without 10 series)
^ I/P Module - Stage 2 terminal B2 and SDM terminal 7
^ Left Front Roof Rail Module terminal A and SDM terminal 12 (regular cab)
^ Left Front Roof Rail Module terminal 2 and SDM terminal 12 (extended cab)
^ Right Front Roof Rail Module terminal A and SDM terminal 15 (regular cab)
^ Right Front Roof Rail Module terminal 2 and SDM terminal 15 (extended cab)
^ Seat Belt Pretensioner - Left terminal A and SDM terminal 16
^ Seat Belt Pretensioner - Right terminal A and SDM terminal 19
--> If not within the specified range, test the circuit for an open/high resistance.
14. If all circuits test normal, replace the SDM.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests
^ SIR/SRS Wiring Repairs SIR/SRS Wiring Repairs
^ Instrument Panel Inflatable Restraint Module Replacement Service and Repair
^ Steering Wheel Inflatable Restraint Module Replacement Service and Repair
^ Steering Wheel Airbag Coil Replacement Service and Repair
^ Inflatable Restraint Side Impact Sensor Replacement Service and Repair
^ Roof Side Inflatable Restraint Module Replacement Service and Repair
^ Seat Belt Retractor Pretensioner Replacement Removal and Replacement
^ Control Module References for SDM replacement, setup, and programming Programming and Relearning