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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 P3000-389 HV Battery Malfunction >> 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: 

      DTCs other than P3000-388 and P3000-389 are output. 

    YES: GO TO  DTC CHART 

    NO: Go to next step 

  2. CHECK ENGINE START 
    1. Put the vehicle into the READY-on state. Check if the engine starts.

      OK: The engine starts. 

    YES: LEAVE VEHICLE IN P POSITION, AND CHARGE HV BATTERY IN IDLE STATUS UNTIL IDLING STOPS 

    NO: Go to next step 

  3. CHECK CRANKSHAFT PULLEY REVOLUTION (P POSITION) 
    1. Turn the ignition switch off, move the shift lever to the P position, and lift up the vehicle.
    2. Turn the crank pulley by hand to check if the crankshaft rotates.
      CAUTION: Do not put the vehicle into the READY-on state while performing this inspection. Be sure to turn the ignition switch off because the engine may start.

      OK: The crankshaft rotates. 

    NG: GO TO step   4 

    OK: REPLACE HV BATTERY 

  4. CHECK CRANKSHAFT PULLEY REVOLUTION (N POSITION) 
    1. Turn the ignition switch off, move the shift lever to the N position, and lift up the vehicle.
    2. Turn the crank pulley by hand to check if the crankshaft rotates.
      CAUTION: Do not put the vehicle into the READY-on state while performing this inspection. Be sure to turn the ignition switch off because the engine may start.

      OK: The crankshaft rotates. 

    OK: REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

    NG: REPAIR OR REPLACE ENGINE