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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 840 (Climate Control System - General Information And Diagnostics - F250-F550) >> Diagnostic Tests >> Climate Control System >> Pinpoint Tests >> Pinpoint Test P: No Operation On Lower Speeds - Manual Climate Control >> Pinpoint Test P: No Operation In Lower Speeds - Manual Climate Control

Pinpoint Test P: No Operation In Lower Speeds - Manual Climate Control

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. P1 CHECK CIRCUIT 261 (OG/BK) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Blower Motor Resistor C169
    • Key in ON position.
    • Turn the function selector switch to the FLOOR position.
      • Fig 1: Checking Circuit For Open
      GF0007973Courtesy of FORD MOTOR CO.
    • Measure the voltage between blower motor resistor C1032-4, circuit 261 (OG/BK) and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  P2.
    2. NO  : REPAIR circuit 261 (OG/BK) for an open. TEST the system for normal operation.
  2. P2 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
    • Key in OFF position.
      • Fig 2: Checking Circuit For Open
      GF0007974Courtesy of FORD MOTOR CO.
    • Measure the resistance between blower motor resistor connector C1032-2, circuit 57 (BK) and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  P3.
    2. NO  : REPAIR circuit 57 (BK) for an open circuit. TEST the system for normal operation.
  3. P3 CHECK MEDIUM/LOW BLOWER CIRCUIT 754 (LG/WH) 
    • Turn the blower motor switch to the medium/low position.
      • Fig 3: Checking Circuit For Ground
      GF0007975Courtesy of FORD MOTOR CO.
    • Measure the resistance between blower motor resistor connector C1032-1, circuit 754 (LG/WH) and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  P4.
    2. NO  : Go to  P6.
  4. P4 CHECK MEDIUM/HIGH BLOWER CIRCUIT 752 (YE/RD) 
    • Turn the blower motor switch to the medium/high position.
      • Fig 4: Checking Circuit For Ground
      GF0007976Courtesy of FORD MOTOR CO.
    • Measure the resistance between blower motor resistor connector C1032-3, circuit 752 (YE/RD) and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new blower motor resistor. REFER to CLIMATE CONTROL article. TEST the system for normal operation.
    2. NO  : Go to  P5.
  5. P5 CHECK CIRCUIT 752 (YE/RD) FOR AN OPEN 
    • Disconnect: Blower Motor Switch C294c
      • Fig 5: Checking Circuit For Open
      GF0007977Courtesy of FORD MOTOR CO.
    • Measure the resistance between blower motor resistor connector C1032-3, circuit 752 (YE/RD) and blower motor switch connector C294c-3, circuit 752 (YE/RD).
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new blower motor switch. REFER to CLIMATE CONTROL article. TEST the system for normal operation.
    2. NO  : REPAIR circuit 752 (YE/RD) for an open. TEST the system for normal operation.
  6. P6 CHECK CIRCUIT 754 (LG/WH) FOR AN OPEN 
    • Disconnect: Blower Motor Switch C294c
      • Fig 6: Checking Circuit For Open
      GF0007978Courtesy of FORD MOTOR CO.
    • Measure the resistance between blower motor resistor connector C1032-1, circuit 754 (LG/WH) and blower motor switch connector C294c-4, circuit 754 (LG/WH).
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new blower motor switch. REFER to CLIMATE CONTROL article. TEST the system for normal operation.
    2. NO  : REPAIR circuit 754 (LG/WH) for an open. TEST the system for normal operation.
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