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 short to +B in SMRG circuit:

Primary circuit of SMR (-) is malfunctioning.

(2 trip detection logic)

  • Wire harness or connector

  • Hybrid battery junction block assembly

  • Power management control ECU
Related Data List
DTC No. Data List
P0AE0-228

  • VL-Voltage before Boosting

  • VH-Voltage after Boosting

  • Power Resource VB

  • SMRP Status

  • SMRB Status

  • SMRG Status

  • SMRP Control Status

  • SMRB Control Status

  • SMRG Control Status

  • Conv Shutdown

  • MG2 Inverter Shutdown

  • MG1 Inverter Shutdown

WIRING DIAGRAM

Refer to the wiring diagram for DTC P3107-214 Click here.

Refer to the wiring diagram for the HV battery high-voltage line circuit 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.

Tech Tips


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

  • 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 power switch off and wait for 30 seconds or more.

    2. Turn the power switch on (READY) and wait for 30 seconds or more.

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

PROCEDURE


  1. READ VALUE USING TECHSTREAM (SMRG STATUS)


    1. Connect the Techstream 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 Switch 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 (POWER MANAGEMENT CONTROL ECU CONNECTOR)


    1. A01I61A

      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 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. A01I4K7

      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.


    NG

    CONNECT SECURELY

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  4. CHECK HARNESS AND CONNECTOR (SMRG VOLTAGE)


    1. Turn the power switch on (IG).

    2. A01I53YE23
      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
      I3-2 (SMRG) - 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. A01I61A

      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

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

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


    1. Disconnect The I3 power management control ECU connector.

    2. A01I36PE60
      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
      I3-2 (SMRG) - Body ground Power switch off 25.0 to 59.0 Ω

    3. Reconnect The I3 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 power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. A01I32RE01
      Text in Illustration
      *1 No. 2 Engine Room Relay Block
      *2 PM IGCT Fuse

      Remove the PM IGCT fuse from the No. 2 engine room relay block.

    3. A01I5TVE01
      Text in Illustration
      *1 Engine Room Relay Block and Junction Block Assembly
      *2 AM2 Fuse

      Remove the AM2 fuse from the engine room relay block and junction block assembly.

    4. A01I5UDE01
      Text in Illustration
      *1 Instrument Panel Junction Block Assembly
      *2 ECU-IG2 NO. 1 Fuse

      Remove the ECU-IG2 NO. 1 fuse from the instrument panel junction block assembly.

    5. Remove the No. 4 hybrid battery shield panel Click here.

    6. A01I4K7E01

      Disconnect the O9 hybrid battery junction block assembly connector.

    7. Disconnect the A38, A39, I3 and I4 power management control ECU connectors.

    8. A01I604E02
      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
      I3-2 (SMRG) - A38-1 (+B2) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - A39-3 (+B1) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - I3-1 (AM22) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - I4-7 (AM21) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - A38-4 (MREL) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - A39-1 (IG2) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - I4-1 (ACCD) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - I4-2 (IG1D) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - A39-2 (IG2D) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - I3-16 (SPDI) Power switch off 10 kΩ or higher
      I3-2 (SMRG) - A38-19 (GI) Power switch off 10 kΩ or higher

    9. Reconnect the A38, A39, I3 and I4 power management control ECU connectors.

    10. Reconnect the O9 hybrid battery junction block assembly connector.

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

    12. Install the PM IGCT fuse, AM2 fuse and ECU-IG2 NO. 1 fuse.


    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 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 O9 hybrid battery junction block assembly connector.

    4. Disconnect the I3 power management control ECU connector.

    5. A01I2N0E02
      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
      I3-2 (SMRG) - O9-3 (SMRG) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      I3-2 (SMRG) and O9-3 (SMRG) - Body ground and other terminals Power switch off 10 kΩ or higher

    6. Reconnect the I3 power management control ECU connector.

    7. Reconnect the O9 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 O9 hybrid battery junction block assembly connector.

    4. A01I3ULE01
      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
      O9-2 (GND) - Body ground Power switch off Below 1 Ω

    5. Reconnect the O9 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. A01I4ZAE08
      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
      O9-3 (SMRG) - O9-2 (GND) -40 to 80 °C (-40 to 176°F) 25.0 to 59.0 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