HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AE0-228

DTC Code DTC Name
P0AE0-228 Hybrid Battery Negative Contactor Control Circuit High

DESCRIPTION

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

DTC No. INF Code DTC Detection Condition Trouble Area
P0AE0 228 Open or +B short in SMRG 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, turn the ignition switch off and 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 ignition 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.

Tech Tips


  • If DTC P0AE0-228 is stored, the ignition switch is turned to ON (READY).

  • After the repair, clear the DTCs, perform the following procedure and check that the same DTC (including pending DTC) is not output.


    1. Turn the ignition switch off and wait for 30 seconds or more.

    2. Turn the ignition switch to ON (READY) and wait for 30 seconds or more.

    3. Turn the ignition switch off and wait for 60 seconds or more.

PROCEDURE


  1. READ VALUE USING GTS (SMRG STATUS)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON (IG).

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

    4. Read the Data List.

      OK
      GTS Display Switch Condition Specified Condition
      SMRG Status Ignition switch ON (IG) OFF

    5. Turn the ignition switch off.


    NG

    CHECK HARNESS AND CONNECTOR (SMRG VOLTAGE) Click here

    OK

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


    1. A01V0I0E01
      Text in Illustration
      *A for LHD
      *B for RHD

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

      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)

    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 ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 1 hybrid vehicle battery cover panel LH Click here.

    3. A01UY6G

      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. 1 hybrid vehicle battery cover panel LH.


    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

    CONNECT SECURELY

  4. CHECK HARNESS AND CONNECTOR (SMRG VOLTAGE)


    1. Turn the ignition switch to ON (IG).

    2. A01UYQDE02
      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
      F55-2 (SMRG) - Body ground Ignition switch ON (IG) Below 1 V

    3. Turn the ignition 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. A01V0I0E01
      Text in Illustration
      *A for LHD
      *B for RHD

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

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

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    NG

    CONNECT SECURELY

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


    1. Disconnect the power management control ECU connector.

    2. A01UZRFE02
      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
      F55-2 (SMRG) - Body ground Ignition switch off 25.0 to 59.0 Ω

    3. Connect the power management control ECU connector.


    NG

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY) 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 ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. A01V1VGE01
      Text in Illustration
      *1 No. 2 Engine Room Relay Block
      *2 IG2 No. 2 Fuse
      *3 IGCT No. 2 Fuse
      *4 AM2 Fuse

      Remove the IG2 No. 2 fuse, IGCT No. 2 fuse and AM2 fuse from the No. 2 engine room relay block. (w/ Power Switch)

    3. A01V279E01
      Text in Illustration
      *1 No. 2 Engine Room Relay Block
      *2 IG2 No. 2 Fuse
      *3 IGCT No. 2 Fuse
      *4 ECU-B No. 2 Fuse

      Remove the IG2 No. 2 fuse, IGCT No. 2 fuse and ECU-B No. 2 fuse from the No. 2 engine room relay block. (w/o Power Switch)

    4. Remove the No. 1 hybrid vehicle battery cover panel LH Click here.

    5. A01UY1DE02

      Disconnect the hybrid battery junction block assembly connector.

    6. Disconnect all the connectors from the power management control ECU. (w/ Power Switch)

    7. Disconnect the power management control ECU connector. (w/o Power Switch)

    8. A01UZF4E01
      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. (w/ Power Switch)

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F55-2 (SMRG) - A26-2 (+B2) Power switch off 10 kΩ or higher
      F55-2 (SMRG) - A27-5 (+B1) Power switch off 10 kΩ or higher
      F55-2 (SMRG) - F55-1 (AM22) Power switch off 10 kΩ or higher
      F55-2 (SMRG) - F56-7 (AM21) Power switch off 10 kΩ or higher
      F55-2 (SMRG) - A27-6 (MREL) Power switch off 10 kΩ or higher
      F55-2 (SMRG) - A27-1 (IG2) Power switch off 10 kΩ or higher
      F55-2 (SMRG) - F56-1 (ACCD) Power switch off 10 kΩ or higher
      F55-2 (SMRG) - F56-2 (IG1D) Power switch off 10 kΩ or higher
      F55-2 (SMRG) - A27-2 (IG2D) Power switch off 10 kΩ or higher
      F55-2 (SMRG) - F55-14 (SPDI) Power switch off 10 kΩ or higher
    9. A01UZ44E01
      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. (w/o Power Switch)

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F55-2 (SMRG) - A26-2 (+B2) Ignition switch off 10 kΩ or higher
      F55-2 (SMRG) - A27-1 (IG2) Ignition switch off 10 kΩ or higher
      F55-2 (SMRG) - A27-5 (+B1) Ignition switch off 10 kΩ or higher
      F55-2 (SMRG) - A27-6 (MREL) Ignition switch off 10 kΩ or higher
      F55-2 (SMRG) - F55-1 (BATT) Ignition switch off 10 kΩ or higher
      F55-2 (SMRG) - F55-14 (SPDI) Ignition switch off 10 kΩ or higher

    10. Connect the power management control ECU connectors.

    11. Connect the hybrid battery junction block assembly connector.

    12. Install the No. 1 hybrid vehicle battery cover panel LH.

    13. Install the IG2 No. 2 fuse, IGCT No. 2 fuse and AM2 fuse to the No. 2 engine room relay block. (w/ Power Switch)

    14. Install the IG2 No. 2 fuse, IGCT No. 2 fuse and ECU-B No. 2 fuse to the No. 2 engine room relay block. (w/o Power Switch)


    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - 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 ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 1 hybrid vehicle battery cover panel LH Click here.

    3. Disconnect the hybrid battery junction block assembly connector.

    4. Disconnect the power management control ECU connector.

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

      A01V0GME02
      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      F55-2 (SMRG) - K33-3 (SMRG) Ignition switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      F55-2 (SMRG) and K33-3 (SMRG) - Body ground and other terminals Ignition 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 No. 1 hybrid vehicle battery cover panel LH.


    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 ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 1 hybrid vehicle battery cover panel LH Click here.

    3. Disconnect the hybrid battery junction block assembly connector.

    4. A01V1N1E01
      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
      K33-2 (GND) - Body ground Ignition switch off Below 1 Ω

    5. Connect the hybrid battery junction block assembly connector.

    6. Install the No. 1 hybrid vehicle battery cover panel LH.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT HYBRID BATTERY JUNCTION BLOCK ASSEMBLY (SMRG)

    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 ignition switch to 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. A01UXX9E01
      Text in Illustration
      *a

      Component without harness connected

      (Hybrid Battery Junction Block Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K33-3 (SMRG) - K33-2 (GND) -40 to 80°C (-40 to 176°F) 25.0 to 59.0 Ω

    4. Install the hybrid battery junction block assembly.


    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

    REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here