HYBRID CONTROL SYSTEM, Diagnostic DTC:P0ADB-227

DTC Code DTC Name
P0ADB-227 Hybrid Battery Positive Contactor Control Circuit Low

DESCRIPTION

Refer to the description for DTC P0AE6-225 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P0ADB 227 Short to GND in the SMRB circuit
  • Wire harness or connector

  • Hybrid battery junction block assembly

  • Power management control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0AE6-225 Click here.

CAUTION / NOTICE / HINT

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work Click here.

    Tech Tips

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)


    1. Disconnect connector H3 from the power management control ECU.

    2. B001LF6E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      H3-4 (SMRB) - Body ground Power switch off 19.0 to 35.5 Ω
    3. Connect the power management control ECU connector.


    OK
    NG
  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - HYBRID BATTERY JUNCTION BLOCK)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Check that the service plug grip is not installed.

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the upper hybrid battery cover sub-assembly.

    3. Disconnect connector i3 from the hybrid battery junction block assembly.

    4. Disconnect connector H3 from the power management control ECU.

    5. Measure the resistance according to the value(s) in the table below.

      B001M3ME07
      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      H3-4 (SMRB) and i3-4 (SMRB) - Body ground and other terminals Power switch off 10 kΩ or higher
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      *b

      Rear view of wire harness connector

      (to Hybrid Battery Junction Block Assembly)

    6. Connect the power management control ECU connector.

    7. Connect the hybrid battery junction block assembly connector.

    8. Install the upper hybrid battery cover sub-assembly.


    OK
    NG