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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Seat System - Seats) >> Diagnosis And Testing >> Seating >> Pinpoint Tests >> Pinpoint Test AK: The Heated Seats are Inoperative - Rear >> Pinpoint Test AK: The Heated Seats Are Inoperative - Rear

Pinpoint Test AK: The Heated Seats Are Inoperative - Rear

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. AK1 CHECK FOR VOLTAGE TO THE HEATED SEAT MODULE 
    • For electrical connector access, release and lower the rear 60 percent seat backrest. Refer to the appropriate steps in HEATED SEAT MODULE .
    • Disconnect: Heated Seat Module C3162B.
    • Ignition ON.
    • Measure the voltage between:
      • rear heated seat module C3162B-2, circuit CBP34 (VT/BN), harness side and ground.
      • rear heated seat module C3162B-1, circuit SBB42 (YE/RD), harness side and ground.
        Fig 1: Checking Voltage To Heated Seat Module
        G06063252Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
    • Yes  : GO to AK2.
    • No  : VERIFY Battery Junction Box (BJB) fuse 42 (20A) and Body Control Module (BCM) fuse 32 (15A) are OK. If OK, REPAIR the circuit(s). If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify possible causes of the circuit short. TEST the system for normal operation.
  2. AK2 CHECK THE REAR HEATED SEAT MODULE GROUND CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between rear heated seat module C3162B-5, circuit GD179 (BK/VT), harness side and ground.
      Fig 2: Measuring Resistance Between Rear Heated Seat Module C3162B-5, Circuit GD179 (BK/VT) And Ground
      G06063253Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to AK3.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  3. AK3 CHECK THE TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN 
    • Disconnect: Heated Seat Module C3162A.
    • Measure the resistance between heated seat module C3162A-12, circuit RHS41 (GN/BN), harness side and C3162A-3, circuit VHS66 (GN/OG), harness side.
      Fig 3: Measuring Resistance Between Heated Seat Module C3162A-12, Circuit RHS41 (GN/BN) And C3162A-3, Circuit VHS66 (GN/OG)
      G06076860Courtesy of FORD MOTOR CO.
    • Is the resistance between 300 and 300K ohms? 
    • Yes  : INSTALL a new heated seat module. REFER to HEATED SEAT MODULE . TEST the system for normal operation.
    • No  : REPAIR circuit RHS41 (GN/BN). TEST the system for normal operation.
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