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 and overview of each diagnostic category.

### DTC Descriptor

DTC B1019 00: System Configuration Error

### Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) runs continuous diagnostic tests on the restraints system. When the ignition is turned ON, the SDM will check to see if the correct components are installed for the vehicle configuration. If the SDM detects that there are too few or too many components on the system, DTC B1019 will set.

### Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

### Conditions for Setting the DTC

• | The SDM was programmed with the wrong options for the vehicle.

• | The wrong SDM was installed for the content of the vehicle.

### Action Taken When the DTC Sets

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

• | The SDM disables all deployments.

### Conditions for Clearing the DTC

• | The correct SDM is installed.

• | The correct components are installed.

### Diagnostic Aids

If the SDM has been replaced, make sure that the correct part number was installed for this vehicle.

### 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

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

1. With a scan tool verify the BCM is programmed with the correct VIN.

⇒ | If not the correct VIN refer to Body Control Module Programming and Setup.

2. With a scan tool perform the Setup SDM Part Number into BCM procedure.
3. Clear DTCs and cycle the ignition OFF then ON. Verify DTC B1019 is not set.

⇒ | If the DTC is set, replace the SDM.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for SDM replacement, setup, and programming