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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1074 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0064, B0065, or B0066: Passenger Compartment Temperature Sensor 1 Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The driver seat belt pretensioner deployment loop consists of a seat belt pretensioner-LF, the seat belt pretensioner-LF high, and the seat belt pretensioner-LF low circuits. A shorting bar used within the seat belt pretensioner connector will short together both seat belt pretensioner high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the pretensioner during servicing. During a frontal crash of sufficient force, the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy the seat belt pretensioner. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a diagnostic trouble code (DTC) will be stored in memory.

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