HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AE7-224

DTC Code DTC Name
P0AE7-224 Hybrid Battery Precharge Contactor Control Circuit High

DESCRIPTION

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

DTC No. INF Code DTC Detection Condition Trouble Area
P0AE7 224 Open or +B short in SMRP circuit

  • Wire harness or connector

  • Hybrid battery junction block

  • 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.

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 (SMRP 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 / SMRP Status.

    4. Read the Data List.

      OK
      Tester Connection Switch Condition Specified Condition
      SMRP Status Power switch on (IG) OFF

    5. Turn the power switch off.


    NG

    CHECK HARNESS AND CONNECTOR (SMRP 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.

      A01JA9CE01
      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)


    1. A01J8ZE

      Check the connector connections and contact pressure of the relevant terminals for the hybrid battery junction block connector.

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

    NG

    CONNECT SECURELY

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  4. CHECK HARNESS AND CONNECTOR (SMRP VOLTAGE)


    1. Turn the power switch on (IG).

    2. A01JBKUE06
      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
      L5-3 (SMRP) - 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.

      A01JA9CE01
      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

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

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


    1. Disconnect connector L5 from the power management control ECU.

    2. A01JCXFE09
      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
      L5-3 (SMRP) - Body ground Power switch off 112 to 274 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. A01JBMXE01
      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 Click here.

    4. Disconnect connector c3 from the hybrid battery junction block.

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

    6. A01J9DGE16
      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
      L5-3 (SMRP) - A21-2 (+B2) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A22-5 (+B1) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - L5-1 (AM22) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - L6-7 (AM21) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A22-6 (MREL) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A22-1 (IG2) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - L6-1 (ACCD) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - L6-2 (IG1D) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A22-2 (IG2D) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - L5-14 (SPDI) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A21-16 (GI) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A21-4 (FCTL) Power switch off 10 kΩ or higher

    7. Connect the power management control ECU connectors.

    8. Connect the hybrid battery junction block connector.

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

    10. Install the IGCT NO. 2 and AM2 fuses.


    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 Click here.

    3. Disconnect connector c3 from the hybrid battery junction block.

    4. Disconnect connector L5 from the power management control ECU.

    5. A01JBN8E12
      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)

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

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      L5-3 (SMRP) - c3-3 (SMRP) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      L5-3 (SMRP) and c3-3 (SMRP) - 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 connector.

    8. Install the upper hybrid 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 upper hybrid battery cover sub-assembly Click here.

    3. Disconnect connector c3 from the hybrid battery junction block.

    4. A01J9EXE11
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Hybrid Battery Junction Block)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      c3-2 (GND) - Body ground Power switch off Below 1 Ω

    5. Connect the hybrid battery junction block connector.

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT 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 hybrid battery junction block Click here.

    3. A01JA0GE40
      Text in Illustration
      *1 Hybrid Battery Junction Block

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-3 (SMRP) - c3-2 (GND) -40°C (-40°F) to 80 °C (176°F) 112 to 274 Ω

    4. Install the hybrid battery junction block Click here.


    NG

    REPLACE HYBRID BATTERY JUNCTION BLOCK Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here