B1655

DTC B1655

Circuit Description

The seat belt buckle switch circuit consists of a seat belt buckle switch and the sensing and diagnostic module (SDM). The SDM monitors the seat belt buckle switch for a buckled/unbuckled state. If the SDM detects a malfunction within the seat belt buckle switch circuit, a DTC will be set.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B1655 Driver Seat Belt Sensor Circuit

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Conditions for Setting the DTC

The SDM detects a malfunction in the seat belt buckle switch circuit.

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.

Diagnostic Aids

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.

The following are possible causes of the malfunction:

* An open or high resistance in the seat belt buckle switch - left circuit
* A short to ground or voltage in the seat belt buckle switch - left circuit
* A malfunctioning seat belt buckle switch - left
* An internal SDM malfunction

If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids. Component Tests and General Diagnostics

Test Description

Step 1 - Step 9:

The number below refers to the step number on the diagnostic table.
5. This step tests for an open, short to ground, or short to voltage in the seat belt buckle switch - left circuit.