For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using the 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 B1395 : Deployment Loops Interconnect Circuit

### Circuit/System Description

When the ignition switch is turned to ON, the sensing and diagnostic module (SDM) will perform a turn-on test to diagnose critical malfunctions within the SDM itself.

Upon passing these tests, ignition and deployment loop voltages are measured to ensure that they are within their normal voltage ranges. The SDM monitors the voltages at the driver low and the passenger low to detect shorts to ground or voltage in the deployment loops.

The SDM inspects the air bag wiring by letting the perpetual current flow through the internal circuit and verify the resistance.

If the scan tool displays DTC B1395, connect the wrong high or low wiring correctly or replace the air bag wiring.

### Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

### Conditions for Setting the DTC

Any high or low wiring of the air bag is connected incorrectly.

### Action Taken When the DTC Sets

The SDM commands ON the AIR BAG warning lamp.

### Conditions for Clearing the DTC

The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.

### Reference Information

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

### Circuit/System Verification

1. If the scan tool displays DTC B1395, check for improperly connected air bag deployment loop wiring.

⇒ | If the above condition exists, properly connect the air bag deployment loop wiring.

2. Ignition ON, use the scan tool to clear the DTCs.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for SDM replacement, setup, and programming