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HYBRID CONTROL SYSTEM, Diagnostic DTC:P0ADB-227

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

  • Hybrid vehicle control ECU assembly
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WIRING DIAGRAM

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

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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).

    Tip:

    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).

Tip:

If P0ADB-227 is stored, the vehicle cannot be started.

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PROCEDURE


  1. Click here

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - BODY GROUND)


    1. Disconnect the H211 hybrid vehicle control ECU assembly connector.

    2. A0004Z2E02

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H211-4 (SMRB) - Body ground Power switch off 25.0 to 59.0 Ω
      Table 1. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

    3. Reconnect the H211 hybrid vehicle control ECU assembly connector.


  2. Click here

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY)

    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 No. 4 hybrid battery shield panel (Click here).

    3. Disconnect the Q6 hybrid battery junction block assembly connector.

    4. Disconnect the H211 hybrid vehicle control ECU assembly connector.

    5. A0008RYE16

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H211-4 (SMRB) and Q6-1 (SMRB) - Body ground and other terminals Power switch off 10 kΩ or higher
      Table 2. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      *b

      Rear view of wire harness connector

      (to Hybrid Battery Junction Block Assembly)

    6. Reconnect the H211 hybrid vehicle control ECU assembly connector.

    7. Reconnect the Q6 hybrid battery junction block assembly connector.

    8. Install the No. 4 hybrid battery shield panel.


    • OK

      REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR