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 Descriptor

DTC B1019 3A: SDM System Configuration Error Incorrect Component Installed

### Circuit/System Description

The inflatable restraint and sensing diagnostic (SDM) is programmed to monitor the number of impact sensors and deployment loops connected. When the ignition is turned ON, the SDM evaluates the number of deployment loops and impact sensors and if a mismatch is detected between the number that the SDM expects and the actual number present, DTC B1019 will set.

### Conditions for Running the DTC

Ignition voltage is between 9-16 V.

### Conditions for Setting the DTC

• | The incorrect SDM is installed on the vehicle.

• | The incorrect software or calibrations have been flashed into the SDM.

### Action Taken When the DTC Sets

The SDM requests the instrument panel cluster to illuminate the AIR BAG warning indicator.

### Conditions for Clearing the DTC

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

• | A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

### Reference Information

#### Schematic Reference

• | Seat Belt Schematics

• | SIR Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

• | Seat Belt System Description and Operation

• | SIR System Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Testing for Intermittent Conditions and Poor Connections

• | Connector Repairs

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

Verify that DTC B1019 is not set.

⇒ | If the DTC is set, program the K36 SDM. If the DTC resets, replace the K36 SDM.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | SIR/SRS Wiring Repairs

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