B4 - Check B-Pillar Limit Switch Open Position

^ Remove the trim over the track and the B-pillar limit switch.

^ Make sure carrier fully depresses plunger of limit switch.

^ Disconnect the connector from the limit switch.

^ Measure resistance between pins of the limit switch.

^ Is resistance greater than 500k ohms?

YES -- Go to B5. B5 - Check Harness From Module Connector to B-Pillar Switch

NO -- Replace switch. Install original passive restraint module.