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

  • Hybrid vehicle control ECU assembly

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.

Tech Tips

If P0AE0-228 is stored, the vehicle cannot be started.

PROCEDURE


  1. READ VALUE USING GTS (SMRG 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 / SMRG Status.

    4. Read the Data List.

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

    5. Turn the power switch off.


    NG

    CHECK HARNESS AND CONNECTOR (SMRG VOLTAGE) Click here

    OK

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


    1. A0005OEE01
      Text in Illustration
      *A for LHD
      *B for RHD

      Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU assembly 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 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. CHECK HARNESS AND CONNECTOR (SMRG VOLTAGE)


    1. Turn the power switch on (IG).

    2. A0004ZAE02
      Text in Illustration
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H211-1 (SMRG) - Body ground Power switch on (IG) Below 1 V

    3. Turn the power switch off.


    NG

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

    OK

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


    1. A0005OEE01
      Text in Illustration
      *A for LHD
      *B for RHD

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

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


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

    2. A0003V9E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H211-1 (SMRG) - Body ground Power switch off 25.0 to 59.0 Ω

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


    NG

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - 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 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. A0008RYE13
      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)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H211-1 (SMRG) or Q6-3 (SMRG) - Body ground Power switch on (IG) Below 1 V

    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. 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. A0008RYE13
      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)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      H211-1 (SMRG) - Q6-3 (SMRG) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      H211-1 (SMRG) and Q6-3 (SMRG) - Body ground and other terminals Power switch off 10 kΩ or higher

    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.


    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 No. 4 hybrid battery shield panel Click here.

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

    4. A000946E03
      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 Condition Specified Condition
      Q6-2 (GND) - Body ground Power switch off Below 1 Ω

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

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


    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 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. A0007QIE03
      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
      Q6-3 (SMRG) - Q6-2 (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