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HYBRID CONTROL SYSTEM, Diagnostic DTC:P0ADC-226

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DTC Code DTC Name
P0ADC-226 Hybrid Battery Positive Contactor Control Circuit High
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DESCRIPTION

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

DTC No. INF Code DTC Detection Condition Trouble Area
P0ADC 226 Open or short to +B 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 P0ADC-226 is stored, the vehicle cannot be started.

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PROCEDURE


  1. Click here

    READ VALUE USING GTS (SMRB STATUS)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / SMRB Status.

    4. Read the Data List.

      OK
      Tester Display Condition Specified Condition
      SMRB Status Power switch on (IG) OFF

    5. Turn the power switch off.


  2. Click here

    CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)


    1. A0005OEE01

      Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU assembly connectors (Click here).

      Table 1. Text in Illustration
      *A for LHD
      *B for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.

  3. Click here

    CHECK CONNECTOR CONNECTION CONDITION (HYBRID BATTERY JUNCTION BLOCK ASSEMBLY CONNECTOR)

    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. A00052Y

      Check the connector connections and contact pressure of the relevant terminals for the hybrid battery junction block assembly connector (Click here).

      OK
      The connector is connected securely and there are no contact pressure problems.

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


    • OK

      CHECK FOR INTERMITTENT PROBLEMS (Click here)

    • NG

      CONNECT SECURELY

  4. Click here

    CHECK HARNESS AND CONNECTOR (SMRB VOLTAGE)


    1. Turn the power switch on (IG).

    2. A0003PME02

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H211-4 (SMRB) - Body ground Power switch on (IG) Below 1 V
      Table 2. Text in Illustration
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU Assembly)

    3. Turn the power switch off.


  5. Click here

    CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)


    1. A0005OEE01

      Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU assembly connectors (Click here).

      Table 3. Text in Illustration
      *A for LHD
      *B for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.

    • OK

      REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY (Click here)

    • NG

      CONNECT SECURELY

  6. 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 4. 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.


  7. Click here

    CHECK HARNESS AND CONNECTOR (SHORT TO POWER SUPPLY WIRES)

    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. A000575E03

      Disconnect the Q6 hybrid battery junction block assembly connector.

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

    5. A0008RYE16

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H211-4 (SMRB) or Q6-1 (SMRB) - Body ground Power switch on (IG) Below 1 V
      Table 5. 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 VEHICLE CONTROL ECU ASSEMBLY (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. 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 (Check for Open)
      Tester Connection Condition Specified Condition
      H211-4 (SMRB) - Q6-1 (SMRB) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      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 6. 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.


    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. Click here

    CHECK HARNESS AND CONNECTOR (HYBRID BATTERY JUNCTION BLOCK ASSEMBLY - BODY GROUND)

    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. A000946E03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q6-2 (GND) - Body ground Power switch off Below 1 Ω
      Table 7. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Battery Junction Block Assembly)

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

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


    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. Click here

    INSPECT HYBRID BATTERY JUNCTION BLOCK ASSEMBLY (SMRB)

    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 hybrid battery junction block assembly (Click here).

    3. A00065YE03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q6-1 (SMRB) - Q6-2 (GND) -40 to 80 °C (-40 to 176°F) 25.0 to 59.0 Ω
      Table 8. Text in Illustration
      *a

      Component without harness connected

      (Hybrid Battery Junction Block Assembly)

    4. Install the hybrid battery junction block assembly.


    • OK

      CHECK FOR INTERMITTENT PROBLEMS (Click here)

    • NG

      REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY (Click here)