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DTC P2611-12: A/C Low Pressure Magnetic Valve Circuit Short to Battery [08/2023 - ]: Procedure

WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS AND CONNECTOR (LOW PRESSURE MAGNETIC VALVE (NO. 1 MAGNET VALVE ASSEMBLY) - HEAT PUMP ECU ASSEMBLY) 

    Pre-procedure1

    • Disconnect the A57 low pressure magnetic valve (No. 1 magnet valve assembly) connector.
    • Disconnect the A62 heat pump ECU assembly connector.
    • Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition Result
      A57-1 (LPMV) or A62-11 (LPMV) - body ground Always Below 1 V V
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      A57-1 (LPMV) or A62-11 (LPMV) - Other terminals and body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

    REPLACE HEAT PUMP ECU ASSEMBLY. Refer to  REMOVAL [08/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR