Possible Causes

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

A belt tension sensor circuit fault can be caused by:

Wiring, terminals or connectors.
A faulted belt tension sensor.
A faulted OCS system.

NOTE: To identify between a production OCS system and an OCS system service kit (OCS service kit), inspect the OCS ECU electrical connector. A production OCS system allows the disconnect of the electrical connector from the OCS ECU.

An OCS system service kit (OCS service kit) has the OCS ECU electrical connector glued to the ECU. It cannot and should not be disconnected or altered.

NOTE: Connector C3238 is located at the anchor point of the safety belt. On vehicles equipped with seat integrated restraints (SIR), the belt tension sensor is located on the outboard side of the passenger seat. On vehicles equipped without SIR, the belt tensioner is located near the base of the B-pillar.

NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough Inspection and Verification before proceeding with the pinpoint test.