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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1511 (Seat System - Seats) >> Diagnostic Tests >> Seats >> Pinpoint Tests >> Pinpoint Test R: The Heated Seat is Inoperative - Left Rear, Does Not Operate in Low >> Pinpoint Test R: The Heated Seat Is Inoperative - Left Rear, Does Not Operate In Low

Pinpoint Test R: The Heated Seat Is Inoperative - Left Rear, Does Not Operate In Low

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
  1. R1 CHECK HEATED SEAT SWITCH INPUT RESISTANCE TO THE HEATED SEAT MODULE 
    • Key in OFF position.
    • Disconnect: Left Rear Heated Seat Module C3162
      • Fig 1: Checking Heated Seat Switch Input Resistance To Heated Seat Module
      GF0013097Courtesy of FORD MOTOR CO.
    • Measure resistance between left rear heated seat module C3162-11, circuit 1255 (WH/RD), harness side and ground while pressing the heated seat switch.
    • Is resistance less than 75 ohms while pressing the heated seat switch? 
    1. YES  : INSTALL a new heated seat module. REFER to Heated Seat Module - Rear Seat . TEST the system for normal operation.
    2. NO  : Go to  R2.
  2. R2 CHECK CIRCUIT 1255 (WH/RD) FOR AN OPEN OR SHORT TO GROUND 
    • Disconnect: Left Rear Heated Seat Switch C722
      • Fig 2: Checking Circuit 1255 (WH/RD) For An Open Or Short To Ground
      GF0013098Courtesy of FORD MOTOR CO.
    • Measure resistance between:
      • left rear heated seat switch C722-2, circuit 1255 (WH/RD), harness side and left rear heated seat module C3162-11, circuit 1255 (WH/RD), harness side.
      • left rear heated seat switch C722-2, circuit 1255 (WH/RD), harness side and ground.
    • Is resistance less than 5 ohms between the heated seat switch and heated seat module and greater than 10,000 ohms between the heated seat switch and ground? 
    1. YES  : Go to  R3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. R3 CHECK CIRCUIT 1255 (WH/RD) FOR A SHORT TO VOLTAGE 
    • Key in ON position.
      • Fig 3: Checking Circuit 1255 (WH/RD) For A Short To Voltage
      GF0013099Courtesy of FORD MOTOR CO.
    • Measure voltage between left rear heated seat module C3162-11, circuit 1255 (WH/RD), harness side and ground.
    • Is any voltage present? 
    1. YES  : INSTALL a new heated seat switch. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
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