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Home >> Lexus >> 2007 >> RX 400h AWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (P310) - RX400H - DTC P0AA1-231 Through U0424-537 >> DTC U0424-537 Invalid Data Received from HVAC Control Module >> Inspection Procedure

Inspection Procedure

  1. READ OUTPUT DTC (HV) 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the ignition switch to the ON position.
    3. Select the following menu items: DIAGNOSIS / OBD/ MOBD / HV ECU / DTC INFO / CURRENT CODES.
    4. Read output DTCs. (See DTC CHECK / CLEAR )

      Result: 

      U0424-537 is output. 

    NEXT: REPLACE AIR CONDITIONER AMPLIFIER ASSEMBLY 

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