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 B0061: Left Front Roof Rail Deployment Loop Resistance Low
DTC B0062: Left Front Roof Rail Deployment Loop Open
DTC B0068: Left Front Roof Rail 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
DTC B0069: Right Front Roof Rail Deployment Loop Resistance Low
DTC B0070: Right Front Roof Rail Deployment Loop Open
DTC B0071: Right Front Roof Rail 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 - Low Control | B0014 | B0014 | B0013 | B0014 | B0012 |
IP Module - Stage 2 - High Control | B0014 | B0014 | B0013 | B0014 | B0012 |
IP Module - Stage 1 - Low Control | B0019 | B0019 | B0017 | B0019 | B0016 |
IP Module - Stage 1 - High Control | B0019 | B0019 | B0017 | B0019 | B0016 |
Side Impact Module - Passenger - Low Control | B0030 | B0030 | B0029 | B0030 | B0028 |
Side Impact Module - Passenger - High Control | B0030 | B0030 | B0029 | B0030 | B0028 |
Side Impact Module - Driver - Low | B0045 | B0045 | B0041 | B0045 | B0040 |
Side Impact Module - Driver - High | B0045 | B0045 | B0041 | B0045 | B0040 |
Seat Belt Pretensioner - Passenger - Low Control | B0059 | B0059 | B0058 | B0059 | B0057 |
Seat Belt Pretensioner -- Passenger - High Control | B0059 | B0059 | B0058 | B0059 | B0057 |
Seat Belt Pretensioner - Driver - Low Control | B0066 | B0066 | B0065 | B0066 | B0064 |
Seat Belt Pretensioner - Driver - High Control | B0066 | B0066 | B0065 | B0066 | B0064 |
Roof Rail Module - Left - Low Control | B0068 | B0068 | B0062 | B0068 | B0061 |
Roof Rail Module - Left - High Control | B0068 | B0068 | B0062 | B0068 | B0061 |
Roof Rail Module - Right - Low Control | B0071 | B0071 | B0070 | B0071 | B0069 |
Roof Rail Module - Right - High Control | B0071 | B0071 | B0070 | B0071 | B0069 |
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 air bag 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
B0013, B0017, B0029, B0041, B0058, B0065, B0062, B0070
| • | The air bag module stage 1 or stage 2 high circuit is less than 2.4 volts and the air bag module stage 1 or stage 2 deployment loop is more than 6 ohms for 500 milliseconds. |
| • | The air bag module stage 1 or stage 2 deployment loop resistance is more than 4.8 ohms for 500 milliseconds. |
B0014, B0019, B0030, B0045, B0059, B0066, B0068, B0071
| • | The air bag module stage 1 or stage 2 high and/or low circuits is short to ground or short to voltage for 500 milliseconds. |
| • | The air bag module stage 1 or stage 2 high circuit is less than 2.4 volts and the air bag module stage 1 or stage 2 deployment loop resistance is less than 6 ohms for 500 milliseconds. |
| • | The air bag module high and/or low circuit is short to voltage for 120 milliseconds. |
B0012, B0016, B0028, B0040, B0057, B0064, B0061, B0069
The air bag module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
Action Taken When the DTC Sets
| • | The SDM commands the AIR BAG indicator ON via serial data communications. |
| • | The SIR System is disabled and no deployments are allowed. |
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | A history DTC will clear once 255 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
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
- Ignition OFF, disconnect the harness connector at the applicable air bag module.
- With the applicable adaptor, connect J 38715-A
- Ignition ON, with a scan tool, verify DTC is set as current.
- Ignition OFF, disconnect J 38715-A and the applicable adaptor.
- Disconnect the harness connector at the SDM.
- Ignition ON, test for less than 1 volt between the applicable HI circuit and ground.
- Test for less than 1 volt between the applicable LOW circuit and ground.
- Ignition OFF, test for infinite resistance between the applicable HI circuit and ground.
- Test for infinite resistance between the applicable LOW circuit and ground.
- Test for less then 1 ohm of resistance between the SDM connector and the air bag module connector HI circuit.
- Test for less then 1 ohm of resistance between the SDM connector and the air bag module connector LOW circuit.
- If all circuits test normal, replace the SDM.
| ⇒ | If DTC is not set or is set as history, replace the applicable air bag module. |
| ⇒ | If not the specified range, test the circuit for a short to voltage. |
| ⇒ | If not the specified range, test the circuit for a short to voltage. |
| ⇒ | If not the specified range, test the circuit for a short to ground. |
| ⇒ | If not the specified range, test the circuit for a short to ground. |
| ⇒ | If not the specified range, test the circuit for an open/high resistance. |
| ⇒ | If not the specified range, test the circuit for an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
