For 1990-2009 cars

### Circuit 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.

### DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B1395 Deployment Loops Interconnect Circuit

### Conditions for Running the DTC

Ignition voltage is within the normal operating voltage range.

### 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 the AIR BAG indicator ON.

### Conditions for Clearing the DTC

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