For 1990-2009 cars

### 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 B0015 01: Driver Pretensioner Deployment Loop Stage 1 Short to Battery
DTC B0015 02: Driver Pretensioner Deployment Loop Stage 1 Short to Ground
DTC B0015 08: Driver Pretensioner Deployment Loop Stage 1 Signal Invalid
DTC B0015 0D: Driver Pretensioner Deployment Loop Stage 1 resistance Above Threshold
DTC B0015 0E: Driver Pretensioner Deployment Loop Stage 1 Resistance Below Threshold

### Diagnostic Fault Information

Circuit | Short to Ground | High Resistance | Low Resistance | Short to Voltage | Signal Performance
--- | --- | --- | --- | --- | ---
Seat Belt Pretensioner - Driver High Circuit | B0015 02 | B0015 0D | B0015 0E | B0015 01 | B0015 08
Seat Belt Pretensioner - Driver Low Circuit | B0015 02 | B0015 0D | B0015 0E | B0015 01 | B0015 08

### 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 seat belt pretensioner - driver. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. A shorting bar used within the seat belt pretensioner - driver connector which will short together both seat belt pretensioner - driver 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

#### B0015 01

The seat belt pretensioner - driver high and/or low control circuit is shorted to voltage for 2 seconds.

#### B0015 02

The seat belt pretensioner - driver high and/or low control circuit is shorted to ground for 2 seconds.

#### B0015 08

The seat belt pretensioner - driver high and/or low control circuit is invalid during SDM initialization.

#### B0015 0D

The seat belt pretensioner - driver deployment loop resistance is more than 5.5 ohms for 2 seconds.

#### B0015 0E

The seat belt pretensioner - driver deployment loop resistance is less than 1.1 ohms for 2 seconds.

### Action Taken When the DTC Sets

• | The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.

• | The SIR system is disabled and no deployments are allowed.

### Conditions for Clearing the DTC

• | The condition for setting the DTC is no longer present.

• | A history DTC will clear after 250 fault-free ignition cycles.

### Reference Information

#### Schematic Reference

SIR Schematics

#### Connector End View Reference

Component Connector End Views

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

#### Special Tools

EL-48526 Pretensioner Dummy Load Tool

### Circuit/System Testing

Important: Refer to SIR Service Precautions.

When removing the connectors, inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector:

• | Inflatable restraint seat belt pretensioner

• | SDM module

• | Front end sensor wiring harness connector

• | SDM wiring harness connector

Important: 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 shoring-bars within the connector allowing the deployment circuit to operate properly.

1. Verify that the LF inflatable restraint seat belt pretensioner 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 LF inflatable restraint seat belt pretensioner.
3. With the appropriate load tool adapter, connect EL-48526 in place of the LF inflatable restraint seat belt pretensioner.
4. Ignition ON, with a scan tool, verify that DTC B0015 is set as current.

⇒ | If the DTC is not set or is set as history, cycle the ignition OFF, disconnect the load tool and adapter, reconnect the harness connector at the LF inflatable restraint seat belt pretensioner, and cycle the ignition ON. If the DTC resets after reconnecting the pretensioner, replace the LF inflatable restraint seat belt pretensioner.

5. Ignition OFF, disconnect the load tool and the adapter.
6. Disconnect the harness connector at the SDM.
7. Ignition ON, test for less than 1.0 volt between the low control circuit terminal 2 and ground.

⇒ | If greater than the specified range, test the control circuit for a short to voltage.

8. Ignition ON, test for less than 1.0 volt between the high control circuit terminal 1 and ground.

⇒ | If greater than the specified range, test the control circuit for a short to voltage.

9. Ignition OFF, test for infinite resistance between the low control circuit terminal 2 and ground.

⇒ | If less than the specified value, test the control circuit for a short to ground.

10. Ignition OFF, test for infinite resistance between the high control circuit terminal 1 and ground.

⇒ | If less than the specified value, test the control circuit for a short to ground.

11. Test for less than 1 ohm between the low control circuit terminal 2 and the SDM terminal 17 X2.

⇒ | If greater than the specified range, test the control circuit for an open/high resistance.

12. Test for less than 1 ohm between the high control circuit terminal 1 and the SDM terminal 18 X2.

⇒ | If greater than the specified range, test the control circuit for an open/high resistance.

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

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Seat Belt Buckle Pretensioner Replacement.

• | Control Module References for SDM replacement, setup, and programming