Diagnostic Instructions

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	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

B0014, B0019, B0030, B0045, B0059, B0066

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

Conditions for Clearing the DTC

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

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

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.

1. Ignition OFF, disconnect the harness connector at the appropriate inflatable restraint module.
2. With the appropriate adaptor, connect J 38715-A in place of the inflatable restraint module.
3. Ignition ON, with a scan tool, verify DTC is set as current.

⇒	If DTC is not set or is set as history, replace the appropriate inflatable restraint module.

4. Ignition OFF, disconnect J 38715-A and the appropriate adaptor.
5. Disconnect the harness connector at the SDM.
6. Ignition ON, test for less than 1 volt between the appropriate high control circuit and ground.

•	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.

7. Test for less than 1 volt between the appropriate low control circuit terminal and 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 greater than the specified range, test the circuit for a short to voltage.

8. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal and ground.

•	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.

9. Test for infinite resistance between the appropriate low control circuit terminal and 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.

10. Test for less than 1 ohm between the following high control circuit terminals.

•	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.

11. Test for less than 1 ohm between the following low control circuit terminals.

•	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.

12. If all circuits test normal, replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.