LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1560 (Climate Control System - General Information (Except Electric) (1 Of2)) >> Diagnosis And Testing >> Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) >> Pinpoint Test(s) >> Pinpoint Test A : P0532, P0533 >> Pinpoint Test A : P0532, P0533

Pinpoint Test A : P0532, P0533

WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

  1. A1 COMPARE THE PCM (POWERTRAIN CONTROL MODULE) PRESSURE SENSOR (ACP_PRESS) PID (PARAMETER IDENTIFICATION) WITH THE MANIFOLD GAUGE SET READINGS

    • Allow the A/C system to stabilize to the outside ambient temperature.

    • Ignition ON.

    • Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).

    • With the manifold gauge set connected, compare the pressure readings of the manifold gauge set and the PCM ACP_PRESS PID.

    Are the pressure values of the manifold gauge set and the ACP_PRESS PCM PID within ± 103 kPa (15 psi)? 

    Yes  IGNORE the Diagnostic Trouble Codes (DTCs). REFER to the Symptom Chart(s) .
    No  GO to  A2

  2. A2 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect Turbocharger Boost Pressure/Charge Air Cooler Temperature (TCBP/CACT) Sensor C1588 (if equipped).

    • Disconnect A/C pressure transducer C1260 .

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1260-1
      GFD267183Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1260-2
      GFD267183Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1260-3
      GFD267183Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  A3

  3. A3 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1260-1
      GFD267190Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1260-2
      GFD267190Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1260-3
      GFD267190Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  A4
    No  REPAIR the circuit.

  4. A4 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR AN OPEN

    Are the resistances less than 3 ohms? 

    Yes  GO to  A5
    No  REPAIR the circuit.

  5. A5 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR A SHORT TOGETHER

    Are the resistances greater than 10, 000 ohms? 

    Yes  INSTALL a new A/C pressure transducer. TEST the system for normal operation. If the concern is still present, GO to  A6
    No  REPAIR the circuits.

  6. A6 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

    • Ignition OFF.

    • Disconnect and inspect all PCM connectors.

    • 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

    • Reconnect all PCM connectors. Make sure they seat and latch correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to PCM GUIDED ROUTINE TESTING
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
scientia non olet · About LEMON Manuals