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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 65 (Hybrid Battery System - Diagnostic Codes (2 Of 5)) >> HYBRID BATTERY SYSTEM (for PHEV Model) >> DTC P0CDF-73: Hybrid/EV Battery Pack Coolant Control Valve "A" Stuck On Actuator Stuck Closed [12/2023 - ] >> Confirmation Driving Pattern

Confirmation Driving Pattern

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.

HINT: 

  1. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  2. Turn the ignition switch off and wait for 2 minutes or more.
  3. Enter the following menus: Powertrain / HV Battery / Active Test / Hybrid/EV Battery Refrigerant Cooling Control.[*1]
  4. Set the vehicle to the following conditions.[*2]
    Item Condition
    A/C Switch ON
    Blower Speed HI
    Set Temperature
    • MAX COLD when the ambient temperature is 25°C (77°F) or higher
    • MAX HOT when the ambient temperature is less than 25°C (77°F)

    HINT: 

    If the ambient temperature is from 25°C (77°F) to 30°C (86°F), perform the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test within 1 minute from setting the above conditions.

  5. Perform the "Hybrid/EV Battery Refrigerant Cooling Control" Active Test for 20 minutes.[*3]

    HINT: 

    • In order to perform "Hybrid/EV Battery Refrigerant Cooling Control", the HV battery minimum temperature must be 20°C (68°F) and the refrigerant temperature must be 20°C (68°F) or higher.

      If the above conditions are not established, perform the "Hybrid/EV Battery Heater Relay" Active Test in an environment with an ambient temperature of 5°C (41°F) or higher and increase the HV battery temperature.

      The temperature will drop after the heater is stopped, so increase the values of "Hybrid/EV Battery Temperature 1 to 20, Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 1), Hybrid/EV Battery Refrigerant Temperature (Duct Outlet 2)" in the Data List to 21°C (70°F) or higher.

      (At an ambient temperature of 5°C (41°F), "Hybrid/EV Battery Heater Relay" will need to be performed for approximately 10 hours.)

    • [*1] to [*3]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  6. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
  7. Check the DTC judgment result.

    HINT: 

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.