B0016
DTC B0012-B0019, B0027-B0030, B0039-B0041, B0045, B0046, B0056-B0076, B0085-B0089, B0106-B0114, B0118-B0124, or B3850-B3854
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
DTC Descriptors
DTC B0012
- Passenger Frontal Deployment Loop (Stage 2) Resistance Low
DTC B0013
- Passenger Frontal Deployment Loop (Stage 2) Open
DTC B0014
- Passenger Frontal Deployment Loop (Stage 2) Voltage Out of Range
DTC B0016
- Passenger Frontal Deployment Loop (Stage 1) Resistance Low
DTC B0017
- Passenger Frontal Deployment Loop (Stage 1) Open
DTC B0018
- Passenger Frontal Deployment Loop (Stage 1) Voltage Out of Range
DTC B0028
- Passenger Front Side Deployment Loop Resistance Low
DTC B0029
- Passenger Front Side Deployment Loop Open
DTC B0030
- Passenger Front Side Deployment Loop Voltage Out of Range
DTC B0040
- Driver Front Side Deployment Loop Resistance Low
DTC B0041
- Driver Front Side Deployment Loop Open
DTC B0045
- Driver Front Side Deployment Loop Voltage Out of Range
DTC B0057
- Passenger Front Pretensioner Deployment Loop Resistance Low
DTC B0058
- Passenger Front Pretensioner Deployment Loop Open
DTC B0059
- Passenger Front Pretensioner Deployment Loop Voltage Out of Range
DTC B0064
- Driver Front Pretensioner Deployment Loop Resistance Low
DTC B0065
- Driver Front Pretensioner Deployment Loop Open
DTC B0066
- Driver Front Pretensioner Deployment Loop Voltage Out of Range
Diagnostic Fault Information
Circuit/System Description
If a malfunction is detected, a DTC will be stored in non-volatile memory. 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 airbag module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity, shorts to ground, and shorts voltage. 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 help to 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
B0014, B0019, B0030, B0045, B0059, B0066
The airbag module high and/or low circuit is short to ground for 120 milliseconds.
B0013, B0017, B0029, B0041, B0058, B0065
* The airbag module stage 1 or stage 2 high circuit is less than 2.4 volts and the airbag module stage 1 or stage 2 deployment loop is greater than 6 ohms for 500 milliseconds.
* The airbag module stage 1 or stage 2 deployment loop resistance is greater than 4.8 ohms for 500 milliseconds.
B0014, B0019, B0030, B0045, B0059, B0066
* The airbag module stage 1 or stage 2 high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
* The airbag module stage 1 or stage 2 high circuit is less than 2.4 volts and the airbag module stage 1 or stage 2 deployment loop resistance is less than 6 ohms for 500 milliseconds.
B0014, B0019, B0030, B0045, B0059, B0066
The airbag module high and/or low circuit is short to voltage for 120 milliseconds.
B0012, B0016, B0028, B0040, B0057, B0064
The airbag module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
Action Taken When the DTC Sets
* The SDM requests the instrument panel cluster (IPC) 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.
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 (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)
* SIR/SRS Wiring Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Special Tools
J 38715-A Driver and Passenger SIR Load Tool
Circuit/System Testing
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector:
* Pretensioner
* Airbag module
* SDM module
* Airbag wiring harness connector
* 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 connector 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 inflatable restraint module.
3. With the appropriate load tool adaptor, connect special tool J 38715-A or SA9409Z-A in place of 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 or SA9409Z-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 J 38715-A or SA9409Z-A and the adaptor.
6. Disconnect the harness connector at the SDM.
7. Ignition ON, test for less than 1 volt between the applicable HI circuit terminal 1 and ground.
• If not the specified range, test the circuit for a short to voltage.
8. Test for less than 1 volt between the applicable LOW circuit terminal and ground.
• If not the specified range, test the circuit for a short to voltage.
9. Ignition OFF, test for infinite resistance between the applicable HI circuit terminal 1 and ground.
• If not the specified range, test the circuit for a short to ground.
10. Test for infinite resistance between the applicable LOW circuit terminal 2 and ground.
• If not the specified range, test the circuit for a short to ground.
11. Test for less then 1 ohm between the SDM connector and the airbag module connector HI circuit.
• If not the specified range, test the circuit for an open/high resistance.
12. Test for less then 1 ohm between the SDM connector and the airbag module connector LOW circuit terminal.
• If not the specified range, test the circuit for an open/high resistance.
13. If all circuits test normal, replace the SDM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Inflatable Restraint Instrument Panel Module Replacement (Service and Repair)
* Driver or Passenger Seat Side Inflatable Restraint Module Replacement (Service and Repair)
* Inflatable Restraint Side Impact Module Wiring Harness Replacement (Service and Repair)
* Seat Belt Buckle Pretensioner Replacement (Removal and Replacement)
* Control Module References (Programming and Relearning) for SDM replacement, setup, and programming