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Pinpoint Test V: The Panel/Floor Control Does Not Operate Using The Front/Rear Auxiliary Climate Controls

  1. V1 CHECK THE FRONT AUXILIARY MODE CONTROL OPERATION 
    • Key in ON position.
    • Place the front auxiliary blower motor switch in the HI position.
    • Rotate the front auxiliary mode control switch from PANEL to FLOOR.
    • Does the front mode control operate correctly? 
    • Yes  : GO to V2.
    • No  : GO to V8.
  2. V2 TEST THE REAR AUXILIARY MODE CONTROL OPERATION 
    • Place the front auxiliary blower motor switch in the REAR position.
    • Place the rear auxiliary blower motor switch in the HI position.
    • Rotate the rear auxiliary mode control switch from PANEL to FLOOR.
    • Does the rear mode control operate correctly? 
    • Yes  : System is OK.
    • No  : GO to V3.
  3. V3 CHECK CIRCUIT 1130 (PK/LG) 
    • Key in OFF position.
    • Disconnect: Rear Auxiliary Mode Control Switch C990c.
    • Disconnect: Auxiliary Climate Control Module C3005.
    • Measure the resistance between rear auxiliary mode control switch C990c pin 2, circuit 1130 (PK/LG) and auxiliary climate control module C3005 pin 1, circuit 1130 (PK/LG); and between auxiliary climate control module C3005 pin 1, circuit 1130 (PK/LG) and ground.
      Fig 1: Checking Circuit 1130 (PK/LG)
      G03910244Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between the rear auxiliary mode control switch and the auxiliary climate control module, and greater than 10,000 ohms between the auxiliary climate control module and ground? 
    • Yes  : GO to V4.
    • No  : REPAIR circuit 1130 (PK/LG). TEST the system for normal operation.
  4. V4 CHECK THE REAR AUXILIARY MODE CONTROL CIRCUIT 1129 (BN/WH) 
    • Disconnect: Auxiliary Mode Door Actuator C3044.
    • Measure the resistance between rear auxiliary mode control switch C990c pin 3, circuit 1129 (BN/WH) and auxiliary mode door actuator C3044 pin 6, circuit 1129 (BN/WH).
      Fig 2: Measuring Resistance Between Rear Auxiliary Mode Control Switch C990C Pin 3 And Auxiliary Mode Door Actuator C3044 Pin 6
      G03910245Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to V5.
    • No  : REPAIR circuit 1129 (BN/WH). TEST the system for normal operation.
  5. V5 CHECK THE REAR AUXILIARY MODE CONTROL CIRCUIT 1128 (GY/LB) 
    • Measure the resistance between rear auxiliary mode control switch C990c pin 1, circuit 1128 (GY/LB) and auxiliary mode door actuator C3044 pin 4, circuit 1128 (GY/LB).
      Fig 3: Measuring Resistance Between Rear Auxiliary Mode Control Switch C990C Pin 1 And Auxiliary Mode Door Actuator C3044 Pin 4
      G03910246Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to V6.
    • No  : REPAIR circuit 1128 (GY/LB). TEST the system for normal operation.
  6. V6 CHECK THE REAR AUXILIARY MODE CONTROL SWITCH 
    • Measure the resistance between rear auxiliary mode control switch C990c pin 1 and pin 3, component side.
      Fig 4: Measuring Resistance Between Rear Auxiliary Mode Control Switch C990C Pin 1 And Pin 3, Component Side
      G03910247Courtesy of FORD MOTOR CO.
    • Is the resistance between 4,000 and 6,000 ohms? 
    • Yes  : GO to V7.
    • No  : INSTALL a new rear auxiliary mode control switch. TEST the system for normal operation
  7. V7 CHECK THE REAR AUXILIARY MODE CONTROL SWITCH WIPER 
    • Measure the resistance between rear auxiliary mode control switch pin 1 and pin 2, component side, while rotating the rear auxiliary mode control switch.
      Fig 5: Measuring Resistance Between Rear Auxiliary Mode Control Switch Pin 1 And Pin 2, Component Side
      G03910248Courtesy of FORD MOTOR CO.
    • Does the resistance vary? 
    • Yes  : INSTALL a new auxiliary climate control module. TEST the system for normal operation.
    • No  : INSTALL a new rear auxiliary mode control switch. refer to AUXILIARY CLIMATE CONTROL . TEST the system for normal operation.
  8. V8 CHECK THE REAR AUXILIARY MODE CONTROL OPERATION 
    • Place the front auxiliary blower motor switch in the REAR position.
    • Place the rear auxiliary blower motor switch in the HI position.
    • Rotate the rear auxiliary mode control switch from PANEL to FLOOR.
    • Does the rear mode control operate correctly? 
    • Yes  : GO to V9.
    • No  : GO to V14.
  9. V9 CHECK CIRCUIT 1123 (YE/WH) 
    • Key in OFF position.
    • Disconnect: Front Auxiliary Mode Control Switch C989c.
    • Disconnect: Auxiliary Climate Control Module C3005.
    • Measure the resistance between front auxiliary mode control switch C989c pin 2, circuit 1123 (YE/WH) and auxiliary climate control module C3005 pin 10, circuit 1123 (YE/WH); and between auxiliary climate control module C3005 pin 10, circuit 1123 (YE/WH) and ground.
      Fig 6: Checking Circuit 1123 (YE/WH)
      G03910249Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between the front auxiliary mode control switch and the auxiliary climate control module, and greater than 10,000 ohms between the auxiliary climate control module and ground? 
    • Yes  : GO to V10.
    • No  : REPAIR circuit 1123 (YE/WH). TEST the system for normal operation.
  10. V10 CHECK THE FRONT AUXILIARY MODE CONTROL CIRCUIT 1129 (BN/WH) 
    • Disconnect: Auxiliary Mode Door Actuator C355.
    • Measure the resistance between front auxiliary mode control switch C989c pin 3, circuit 1129 (BN/WH) and auxiliary mode door actuator C3044 pin 6, circuit 1129 (BN/WH).
      Fig 7: Measuring Resistance Between Front Auxiliary Mode Control Switch C989C Pin 3 And Auxiliary Mode Door Actuator C3044 Pin 6
      G03910245Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to V11.
    • No  : REPAIR circuit 1129 (BN/WH). TEST the system for normal operation.
  11. V11 CHECK THE FRONT AUXILIARY MODE CONTROL CIRCUIT 1128(GY/LB) 
    • Measure the resistance between front auxiliary mode control switch C989c pin 1, circuit 1128 (GY/LB) and auxiliary mode door actuator C3044 pin 4, circuit 1128 (GY/LB).
      Fig 8: Measuring Resistance Between Front Auxiliary Mode Control Switch C989C Pin 1 And Auxiliary Mode Door Actuator C3044 Pin 4
      G03910246Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to V12.
    • No  : REPAIR circuit 1128 (GY/LB). TEST the system for normal operation.
  12. V12 CHECK THE FRONT AUXILIARY MODE CONTROL SWITCH 
    • Measure the resistance between front auxiliary mode control switch pin 1 and pin 3, component side.
      Fig 9: Measuring Resistance Between Front Auxiliary Mode Control Switch Pin 1 And Pin 3, Component Side
      G03910247Courtesy of FORD MOTOR CO.
    • Is the resistance between 4,000 and 6,000 ohms? 
    • Yes  : GO to V13.
    • No  : INSTALL a new front auxiliary mode control switch. refer to AUXILIARY CLIMATE CONTROL . TEST the system for normal operation.
  13. V13 CHECK THE FRONT AUXILIARY MODE CONTROL SWITCH WIPER 
    • Measure the resistance between front auxiliary mode control switch pin 1 and pin 2, component side.
      Fig 10: Measuring Resistance Between Front Auxiliary Mode Control Switch Pin 1 And Pin 2, Component Side
      G03910248Courtesy of FORD MOTOR CO.
    • Does the resistance vary? 
    • Yes  : INSTALL a new auxiliary climate control module. TEST the system for normal operation.
    • No  : INSTALL a new front auxiliary mode control switch. refer to AUXILIARY CLIMATE CONTROL . TEST the system for normal operation.
  14. V14 CHECK THE VOLTAGE TO THE AUXILIARY MODE DOOR ACTUATOR 
    • Key in OFF position.
    • Disconnect: Auxiliary Mode Door Actuator C3044.
    • Key in ON position.
    • Measure the voltage between auxiliary mode door actuator C3044 pin 7, circuit 295 (LB/PK) and ground.
      Fig 11: Measuring Voltage Between Auxiliary Mode Door Actuator C3044 Pin 7, Circuit 295 (LB/PK) And Ground
      G03910254Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to V15.
    • No  : REPAIR circuit 295 (LB/PK). TEST the system for normal operation.
  15. V15 CHECK CIRCUIT 57 (BK) 
    • Key in OFF position.
    • Measure the resistance between auxiliary mode door actuator C3044 pin 8, circuit 57 (BK) and ground.
      Fig 12: Measuring Resistance Between Auxiliary Mode Door Actuator C3044 Pin 8, Circuit 57 (BK) And Ground
      G03910255Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to V16.
    • No  : REPAIR circuit 57 (BK). TEST the system for normal operation.
  16. V16 CHECK CIRCUIT 1131 (LG) 
    • Disconnect: Auxiliary Climate Control Module C353.
    • Measure the resistance between auxiliary climate control module C3005 pin 3, circuit 1131 (LG) and auxiliary mode door actuator C3044 pin 3, circuit 1131 (LG); and between auxiliary mode door actuator C3044 pin 3, circuit 1131 (LG), and ground.
      Fig 13: Checking Circuit 1131 (LG)
      G03910256Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between the auxiliary climate control module and the auxiliary mode door actuator, and greater than 10,000 ohms between the auxiliary mode door actuator and ground? 
    • Yes  : GO to V17.
    • No  : REPAIR circuit 1131 (LG). TEST the system for normal operation.
  17. V17 CHECK CIRCUIT 1129 (BN/WH) 
    • Disconnect: Front Auxiliary Mode Control Switch C989c.
    • Disconnect: Rear Auxiliary Mode Control Switch C990c.
    • Measure the resistance between auxiliary mode door actuator C3044 pin 6, circuit 1129 (BN/WH) and rear auxiliary mode control switch C990c pin 3, circuit 1129 (BN/WH); and between auxiliary mode door actuator C3044 pin 6, circuit 1129 (BN/WH) and ground.
      Fig 14: Checking Circuit 1129 (BN/WH)
      G03910257Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between the auxiliary mode door actuator and the rear auxiliary mode control switch, and greater than 10,000 ohms between the auxiliary mode door actuator and ground? 
    • Yes  : GO to V18.
    • No  : REPAIR circuit 1129 (BN/WH). TEST the system for normal operation.
  18. V18 CHECK CIRCUIT 1128 (GY/LB) 
    • Measure the resistance between auxiliary mode door actuator C3044 pin 4, circuit 1128 (GY/LB) and rear auxiliary mode control switch C990c pin 1, circuit 1128 (GY/LB); and between auxiliary mode door actuator C3044 pin 4, circuit 1128 (GY/LB) and ground.
      Fig 15: Checking Circuit 1128 (GY/LB)
      G03910258Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between the auxiliary mode door actuator and the rear auxiliary mode control switch, and greater than 10,000 ohms between the auxiliary mode door actuator and ground? 
    • Yes  : GO to V19.
    • No  : REPAIR circuit 1128 (GY/LB). TEST the system for normal operation.
  19. V19 CHECK CIRCUIT 1130 (PK/LG) FOR A SHORT 
    • Measure the resistance between auxiliary climate control module C3005 pin 1, circuit 1130 (PK/LG) and ground.
      Fig 16: Measuring Resistance Between Auxiliary Climate Control Module C3005 Pin 1, Circuit 1130 (PK/LG) And Ground
      G03910259Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes  : GO to V20.
    • No  : REPAIR circuit 1130 (PK/LG). TEST the system for normal operation.
  20. V20 CHECK CIRCUIT 1123 (YE/WH) FOR A SHORT 
    • Measure the resistance between auxiliary climate control module C3005 pin 10, circuit 1123 (YE/WH) and ground.
      Fig 17: Measuring Resistance Between Auxiliary Climate Control Module C3005 Pin 10, Circuit 1123 (YE/WH) And Ground
      G03910260Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes  : GO to V21.
    • No  : REPAIR circuit 1123 (YE/WH). TEST the system for normal operation.
  21. V21 CHECK THE AUXILIARY MODE DOOR ACTUATOR - 12 VOLTS 
    • Connect: Auxiliary Mode Door Actuator C3044.
    • Key in ON position.
    • Place the front auxiliary blower motor switch in the HI position.
    • Connect a fused jumper lead between auxiliary climate control module C3005 pin 8, circuit 295 (LB/PK) and pin 3, circuit 1131 (LG).
      Fig 18: Connecting Fused Jumper Lead Between Auxiliary Climate Control Module C3005 Pin 8, Circuit 295 (LB/PK) And Pin 3, Circuit 1131 (LG)
      G03910261Courtesy of FORD MOTOR CO.
    • Does the auxiliary mode door actuator direct airflow to the panel? 
    • Yes  : INSPECT for binding, stuck or broken blend door or linkage. If no condition is found, INSTALL a new auxiliary climate control module. TEST the system for normal operation.
    • No  : GO to V22.
  22. V22 CHECK THE AUXILIARY MODE DOOR ACTUATOR - 0 VOLTS 
    • Connect a fused jumper lead between auxiliary climate control module C3005 pin 3, circuit 1131 (LG) and pin 6, circuit 57 (BK).
      Fig 19: Connecting Fused Jumper Lead Between Auxiliary Climate Control Module C3005 Pin 3, Circuit 1131 (LG) And Pin 6, Circuit 57 (BK)
      G03889961Courtesy of FORD MOTOR CO.
    • Does the auxiliary mode door actuator direct airflow to the floor? 
    • Yes  : INSTALL a new auxiliary climate control module. TEST the system for normal operation.
    • No  : INSPECT for a binding, stuck or broken auxiliary mode door or linkage. If no condition is found, INSTALL a new auxiliary mode door actuator. refer to AUXILIARY CLIMATE CONTROL . TEST the system for normal operation.
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