LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> External Pages >> Different car >> Section 627 (Climate Control System - General Information (Diagnosis & Testing - General Procedures)) >> Diagnosis And Testing >> Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) >> Pinpoint Test(s) >> Pinpoint Test S: The A/C (Air Conditioning) Compressor Relief Valve Discharging

Pinpoint Test S: The A/C (Air Conditioning) Compressor Relief Valve Discharging

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Normal Operation and Fault Conditions 

    The A/C pressure relief valve normal open pressure is 3, 447-4, 137 kPa (500-600 psi).

    Possible Sources 

    • High system pressure
    • A/C pressure relief valve

  2. S1 DIAGNOSE THE A/C (AIR CONDITIONING) COMPRESSOR RELIEF VALVE

    • Start the engine.

    • On the HVAC controls, set the temperature to full cold, select PANEL and select the A/C button (indicator on).

    • Using the appropriate manifold gauge set, check the A/C high side system pressure.

    Is the high side system pressure above the A/C pressure relief valve open pressure [3, 447-4, 137 kPa (500-600 psi)]? 

    Yes  REPAIR the A/C system for a restriction. REFER to the appropriate Refrigerant System Tests GENERAL PROCEDURES .
    No  INSTALL a new A/C compressor. REFER to the appropriate REMOVAL AND INSTALLATION procedure.
scientia non olet · About LEMON Manuals