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 B0012: Passenger Frontal Deployment Loop (Stage 2) Resistance LowDTC 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 | Short to Ground | High Resistance | Open | Short to Voltage | Low resistance |
|---|---|---|---|---|---|
IP Module - Stage 2 - High Control | B0014 | B0014 | B0013 | B0014 | B0012 |
IP Module - Stage 2 - Low Control | B0014 | B0014 | B0013 | B0014 | B0012 |
IP Module - Stage 1 - High Control | B0019 | B0019 | B0017 | B0019 | B0016 |
IP Module - Stage 1 - Low Control | B0019 | B0019 | B0017 | B0019 | B0016 |
Side Impact Module - Passenger - High Control | B0030 | B0030 | B0029 | B0030 | B0028 |
Side Impact Module - Passenger - Low Control | B0030 | B0030 | B0029 | B0030 | B0028 |
Side Impact Module - Driver - High | B0045 | B0045 | B0041 | B0045 | B0040 |
Side Impact Module - Driver - Low | B0045 | B0045 | B0041 | B0045 | B0040 |
Seat Belt Pretensioner - Passenger - High Control | B0059 | B0059 | B0058 | B0059 | B0057 |
Seat Belt Pretensioner - Passenger - Low Control | B0059 | B0059 | B0058 | B0059 | B0057 |
Seat Belt Pretensioner - Driver - High Control | B0066 | B0066 | B0065 | B0066 | B0064 |
Seat Belt Pretensioner - Driver - Low Control | B0066 | B0066 | B0065 | B0066 | B0064 |
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 shorted 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 shorted to ground or shorted 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 shorted 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) 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. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
SIR System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Special Tools
J 38715-A Driver and Passenger SIR Load Tool
Circuit/System Testing
Important: Refer to SIR Service Precautions.
When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.| • | Pretensioner |
| • | Inflatable restraint module |
| • | SDM module |
| • | Inflatable restraint module wiring harness connector |
| • | SDM wiring harness connector |
- Ignition OFF, disconnect the harness connector at the appropriate inflatable restraint module.
- With the appropriate adaptor, connect J 38715-A in place of the inflatable restraint module.
- Ignition ON, with a scan tool, verify DTC is set as current.
- Ignition OFF, disconnect J 38715-A and the appropriate adaptor.
- Disconnect the harness connector at the SDM.
- Ignition ON, test for less than 1 volt between the appropriate high control circuit and ground.
- Test for less than 1 volt between the appropriate low control circuit terminal and ground.
- Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal and ground.
- Test for infinite resistance between the appropriate low control circuit terminal and ground.
- Test for less than 1 ohm between the following high control circuit terminals.
- Test for less than 1 ohm between the following low control circuit terminals.
- If all circuits test normal, replace the SDM.
Important: The connector and 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 DTC is not set or is set as history, replace the appropriate inflatable restraint module. |
| • | I/P module Stage 1 terminal A1 |
| • | I/P module Stage 2 terminal B1 |
| • | Left side impact module terminal 1 |
| • | Right side impact module terminal 1 |
| • | Left seat belt pretensioner terminal 1 |
| • | Right seat belt pretensioner terminal 1 |
| ⇒ | If greater than the specified range, test the circuit for a short to voltage. |
| • | I/P module Stage 1 terminal A2 |
| • | I/P module Stage 2 terminal B2 |
| • | Left side impact module terminal 2 |
| • | Right side impact module terminal 2 |
| • | Left seat belt pretensioner terminal 2 |
| • | Right seat belt pretensioner terminal 2 |
| ⇒ | If greater than the specified range, test the circuit for a short to voltage. |
| • | I/P module Stage 1 terminal A1 |
| • | I/P module Stage 2 terminal B1 |
| • | Left side impact module terminal 1 |
| • | Right side impact module terminal 1 |
| • | Left seat belt pretensioner terminal 1 |
| • | Right seat belt pretensioner terminal 1 |
| ⇒ | If less than the specified value, test the circuit for a short to ground. |
| • | I/P module Stage 1 terminal A2 |
| • | I/P module Stage 2 terminal B2 |
| • | Left side impact module terminal 2 |
| • | Right side impact module terminal 2 |
| • | Left seat belt pretensioner terminal 2 |
| • | Right seat belt pretensioner terminal 2 |
| ⇒ | If less than the specified value, test the circuit for a short to ground. |
| • | I/P module Stage 1 terminal A1 and SDM terminal 9 |
| • | I/P module Stage 2 terminal B1 and SDM terminal 30 |
| • | Left side impact module terminal 1 and SDM terminal 17 |
| • | Right side impact module terminal 1 and SDM terminal 14 |
| • | Left seat belt pretensioner terminal 1 and SDM terminal 38 |
| • | Right seat belt pretensioner terminal 1 and SDM terminal 35 |
| ⇒ | If greater than the specified range, test the circuit for an open/high resistance. |
| • | I/P module Stage 1 terminal A2 and SDM terminal 10 |
| • | I/P module Stage 2 terminal B2 and SDM terminal 31 |
| • | Left side impact module terminal 2 and SDM terminal 16 |
| • | Right side impact module terminal 2 and SDM terminal 15 |
| • | Left seat belt pretensioner terminal 2 and SDM terminal 37 |
| • | Right seat belt pretensioner terminal 2 and SDM terminal 36 |
| ⇒ | If greater than the specified range, test the circuit for an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for SDM replacement, setup, and programming |
