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 SMR3 (CON3) circuit

  • Wire harness or connector

  • Hybrid battery junction block assembly

  • Power management control ECU

WIRING DIAGRAM

Refer to the wiring diagram of 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 disconnecting 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.

Tech Tips

Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (SMRG 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 / SMRG Status.

    4. Read the Data List.

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

      A01NF3IE01
      Text in Illustration
      *1 for LHD *2 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 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 battery cover sub-assembly Click here.

    3. A01NFVC

      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 battery cover sub-assembly Click here.


    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. A01NFKTE03
      Text in Illustration
      *1

      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
      F97-2 (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. Check the connector connections and contact pressure of the relevant terminals for the power management control ECU connectors Click here.

      A01NF3IE01
      Text in Illustration
      *1 for LHD *2 for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD) Click here

    C

    CONNECT SECURELY

    A

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD) Click here

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


    1. Disconnect connector F97 from the power management control ECU.

    2. A01NF32E24
      Text in Illustration
      *1

      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
      F97-2 (SMRG) - 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. A01NHIYE01
      Text in Illustration
      *1 Engine Room Relay Block No. 2
      *2 IGCT No. 3 Fuse

      Remove the IGCT No. 3 fuse from the engine room relay block No. 2.

    3. A01NF1AE01
      Text in Illustration
      *1 Engine Room Junction Block Assembly
      *2 AM2 Fuse

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

    4. A01NF4XE01
      Text in Illustration
      *1 Instrument Panel Junction Block Assembly
      *2 ECU IG2 Fuse

      Remove the ECU IG2 fuse from the instrument panel junction block assembly.

    5. Remove the battery cover sub-assembly Click here.

    6. Disconnect connector z34 from the hybrid battery junction block assembly.

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

    8. A01NGXZE19
      Text in Illustration
      *1 Power Management Control ECU

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F97-2 (SMRG) - A80-2 (+B2) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - A81-5 (+B1) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - F97-1 (AM22) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - F98-7 (AM21) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - A81-6 (MREL) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - A81-1 (IG2) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - F98-1 (ACCD) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - F98-2 (IG1D) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - A81-2 (IG2D) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - F97-14 (SPDI) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - A80-16 (GI) Power switch off 10 kΩ or higher
      F97-2 (SMRG) - A80-4 (FCTL) Power switch off 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    9. Connect the power management control ECU connectors.

    10. Connect the hybrid battery junction block assembly connector.

    11. Install the battery cover sub-assembly Click here.

    12. Install the ECU IG2 fuse to the instrument panel junction block assembly.

    13. Install the AM2 fuse to the engine room junction block assembly.

    14. Install the IGCT No. 3 fuse to the engine room relay block No. 2.


    B

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD) 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 battery cover sub-assembly Click here.

    3. Disconnect connector z34 from the hybrid battery junction block assembly.

    4. Disconnect connector F97 from the power management control ECU.

    5. A01NF1EE08
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Management Control ECU)
      *2

      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
      F97-2 (SMRG) - z34-1 (SMRG) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      F97-2 (SMRG) and z34-1 (SMRG) - 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 battery cover sub-assembly Click here.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK HARNESS AND CONNECTOR (HYBRID BATTERY JUNCTION BLOCK - 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 battery cover sub-assembly Click here.

    3. Disconnect connector z34 from the hybrid battery junction block assembly.

    4. A01NDHPE12
      Text in Illustration
      *1

      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
      z34-2 (GND) - Body ground Power switch off Below 1 Ω

    5. Connect the hybrid battery junction block assembly connector.

    6. Install the battery cover sub-assembly Click here.


    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. A01NDSFE35
      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
      z34-1 (SMRG) - z34-2 (GND) -40 to 80 °C 19.0 to 35.5 Ω

    4. Install the hybrid battery junction block assembly Click here.


    NG

    REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here