HYBRID CONTROL SYSTEM, Diagnostic DTC:P0ADC-226

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

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

  • Power management control ECU

WIRING DIAGRAM

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

INSPECTION PROCEDURE

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. READ VALUE USING INTELLIGENT TESTER (SMRB STATUS)


    1. Connect the intelligent tester 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 Connection Switch Condition Specified Condition
      SMRB Status Power switch on (IG) OFF

    5. Turn the power switch off.


    NG

    CHECK HARNESS AND CONNECTOR (SMRB VOLTAGE) Click here

    OK

  2. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)


    1. Check the connector connections and contact pressure of the relevant terminals for the power management control ECU connectors.

      A003Y7QE01
      Text in Illustration
      *A for LHD *B for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.

    NG

    CONNECT SECURELY

    OK

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


    1. A003W9K

      Check the condition of the hybrid battery junction block assembly connector.

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

    NG

    CONNECT SECURELY

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  4. CHECK HARNESS AND CONNECTOR (SMRB VOLTAGE)


    1. Turn the power switch on (IG).

    2. A003YZ0E14
      Text in Illustration
      *a

      Component with harness connected

      (Power Management Control ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H3-4 (SMRB) - Body ground Power switch on (IG) Below 1 V

    3. Turn the power switch off.


    NG

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) Click here

    OK

  5. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)


    1. Check the connector connections and contact pressure of the relevant terminals for the power management control ECU connectors.

      A003Y7QE01
      Text in Illustration
      *A for LHD *B for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.

    NG

    CONNECT SECURELY

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

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


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

    2. A003V8WE32
      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.


    NG

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - HYBRID BATTERY JUNCTION BLOCK) Click here

    OK

  7. 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. A003V26E01
      Text in Illustration
      *1 Engine Room Junction Block Assembly
      *2 AM2 fuse
      *3 IGCT NO. 2 fuse

      Remove the IGCT NO. 2 and AM2 fuses from the engine room junction block assembly.

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

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

    5. Disconnect all the connectors from the power management control ECU.

    6. A003W1UE32
      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) - A19-2 (+B2) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - A20-5 (+B1) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - H3-1 (AM22) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - H4-7 (AM21) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - A20-6 (MREL) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - A20-1 (IG2) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - H4-1 (ACCD) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - H4-2 (IG1D) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - A20-2 (IG2D) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - H3-14 (SPDI) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - A19-16 (GI) Power switch off 10 kΩ or higher
      H3-4 (SMRB) - A19-4 (FCTL) Power switch off 10 kΩ or higher

    7. Connect the power management control ECU connectors.

    8. Connect the hybrid battery junction block assembly connector.

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

    10. Install the IGCT NO. 2 and AM2 fuses from the engine room junction block assembly.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  8. 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. A003ZL1E37
      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)

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      H3-4 (SMRB) - i3-4 (SMRB) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      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

    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.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. 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 upper hybrid battery cover sub-assembly.

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

    4. A003ZCBE14
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Battery Junction Block Assembly)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      i3-2 (GND) - Body ground Power switch off Below 1 Ω

    5. Connect the hybrid battery junction block assembly connector.

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT 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 hybrid battery junction block assembly.

    3. A003VJQE45
      Text in Illustration
      *1 Hybrid Battery Junction Block Assembly

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      i3-4 (SMRB) - i3-2 (GND) -40 to 80°C (-40 to 176°F) 19.0 to 35.5 Ω

    4. Install the hybrid battery junction block assembly.


    NG

    REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here