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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1558 (Seat System - Seating) >> Diagnostic Tests >> Seats >> Pinpoint Tests >> Pinpoint Test K: The Heated Seat is Inoperative - Driver >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

The heated seat module is supplied battery voltage and switched ignition voltage from circuits 1048 (LB/WH) and 1040 (RD/BK). The heated seat is activated when the heated seat switch supplies a ground signal to one of 2 input circuits into the heated seat module. Input circuit 1020 (DG/VT) activates the system to hi or off. Input circuit 1255 (WH/RD) activates the system to LOW or OFF. Once activated, the heated seat module supplies voltage and ground to heater mat circuits 1064 (YE/LB) and 1065 (WH/LB) to heat the seat cushion and backrest. The heated seat module monitors circuits 1060 (BK/LB) and 1061 (BN/LB) from the temperature sensor in the cushion heater mat to maintain the seat temperature. The system will remain ON until the module times-out or is switched OFF.

This pinpoint test is intended to diagnose the following:

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