LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2011 >> Focus S, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Seat System - Seats >> Diagnosis And Testing >> Seats >> Pinpoint Tests >> Pinpoint Test A: The Heated Seats are Inoperative >> Normal Operation

Normal Operation

Each front seat uses a heated seat relay located inside the relay connector mounted to the seat track. When the ignition switch is ON, voltage is supplied from the Smart Junction Box (SJB) to the heated seat relay coils through driver heated seat relay enable circuit VHS35 or passenger heated seat relay enable circuit SBX06. With the engine running and heated seat switch(es) pressed on, ground is supplied to the opposite side of the relay coil(s) from the HVAC module heated seat relay drive circuits to energize the relay(s). The switch indicator can only be illuminated with the engine running. The relay(s) contact closes to supply battery voltage from circuit CHS02 to the driver heater mat circuit CHS11 or passenger heater mat circuit CHS07 to heat the seat(s).

This pinpoint test is intended to diagnose the following: 

scientia non olet · About LEMON Manuals