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Home >> Ford >> 2012 >> Explorer Limited, 3.5 8, AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control - EMTC >> Diagnostic Routine(S) >> Diagnostic Routine W >> Pinpoint Test

Pinpoint Test

  1. CHECK FOR VOLTAGE TO THE A/C  COMPRESSOR
    1. Ignition OFF.
    2. Disconnect: A/C  Compressor.
    3. Ignition ON.
    4. Measure:
      A/C  Compressor Ground
      G08033695
      G08031601
      C1110 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 CBK03 (GY)
      G08033411
      - Ground

      Is the voltage greater than 11 volts? 

      • Yes:  GO to .
      • No  : VERIFY the BJB fuse 70 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the appropriate wiring diagrams to identify the possible causes of the circuit short. REFER to OEM FUSE AND RELAY INFORMATION and OEM WIRING DIAGRAMS .
  2. CHECK THE A/C  COMPRESSOR DISPLACEMENT CONTROL VALVE CIRCUIT FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Disconnect: PCM C1381E.
    3. Measure:
      A/C  Compressor Ground
      G08033695
      G08031601
      C1110 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 VE462 (WH/BN)
      G08031553
      - Ground

      Is the resistance greater than 10, 000 ohms? 

      • Yes:  GO to .
      • No  : REPAIR the circuit.
  3. CHECK THE A/C  COMPRESSOR DISPLACEMENT CONTROL VALVE CIRCUIT FOR A SHORT TO POWER
    1. Ignition ON.
    2. Measure:
      A/C  Compressor Ground
      G08033695
      G08031601
      C1110 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 VE462 (WH/BN)
      G08033411
      - Ground

      Is any voltage present? 

      • Yes:  REPAIR the circuit.
      • No  : GO to .
  4. CHECK THE A/C  COMPRESSOR DISPLACEMENT CONTROL VALVE CIRCUIT FOR AN OPEN
    1. Ignition OFF.
    2. Measure:
      A/C  Compressor PCM
      G08033695
      G08033705
      C1110 C1381E
      Pin Circuit Measurement / Action Pin Circuit
      1 VE462 (WH/BN)
      G08031553
      66 VE462 (WH/BN)

      Is the resistance less than 3 ohms? 

  5. CHECK FOR CORRECT PCM OPERATION
    1. Ignition OFF.
    2. Disconnect and inspect all PCM connectors.
    3. Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    4. Reconnect the PCM connectors. Make sure they seat and latch correctly.
    5. Operate the system and determine if the concern is still present.

      Is the concern still present? 

      • Yes:  CHECK OASIS  for any applicable TSBs  . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs  address this concern, INSTALL a new PCM. REFER to POWERTRAIN CONTROL MODULE (PCM) - 2.0L GTDI .
      • No  : The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.