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.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0AE7-224 Hybrid Battery Precharge Contactor Control Circuit High Open or +B short in SMRP circuit

  • Wire harness or connector

  • Hybrid battery junction block assembly

  • Hybrid vehicle control ECU assembly

 Does not come on

Master Warning Light:

Comes on

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0AE6-225.

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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.

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    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.

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Tech Tips

If P0AE7-224 is stored, the hybrid system cannot be started.

PROCEDURE


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


      Powertrain > Hybrid Control > Data List
      Tester Display
      SMRP Status

    4. Read the Data List.

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

    5. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (SMRP VOLTAGE) Click here

    OK

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

    Result
    Proceed to
    OK
    NG

    1. 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.
      A01KT1OC01
      *1 for LHD *2 for RHD
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT SECURELY

    OK

  3. CHECK CONNECTOR CONNECTION CONDITION (HYBRID BATTERY JUNCTION BLOCK ASSEMBLY CONNECTOR)

    Result
    Proceed to
    OK
    NG

    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. A01KRA4

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

      Click here

      OK
      The connectors are connected securely and there are no contact pressure problems.
      Result
      Proceed to
      OK
      NG

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

    CONNECT SECURELY

  4. CHECK HARNESS AND CONNECTOR (SMRP VOLTAGE)


    1. Turn the power switch on (IG).

    2. A01KR9GC49
      *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
      E135-3 (SMRP) - Body ground Power switch on (IG) Below 1 V

    3. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    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)

    Result
    Proceed to
    OK
    NG

    1. 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.
      A01KT1OC01
      *1 for LHD *2 for RHD
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for RHD: Click here

    NG

    CONNECT SECURELY

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


    1. Disconnect the E135 hybrid vehicle control ECU assembly connector.

    2. A01KREJC23
      *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
      E135-3 (SMRP) - Body ground Power switch off 112 to 274 Ω

    3. Reconnect the E135 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    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. A01KRA4N02

      Disconnect the L49 hybrid battery junction block assembly connector.

    3. Disconnect the E135 hybrid vehicle control ECU assembly connector.

    4. Turn the power switch on (IG).

    5. A01KRCSC92
      *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
      E135-3 (SMRP) or L49-4 (SMRP) - Body ground and other terminals Power switch on (IG) Below 1 V

    6. Turn the power switch off.

    7. Reconnect the E135 hybrid vehicle control ECU assembly connector.

    8. Reconnect the L49 hybrid battery junction block assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY for RHD: 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. Disconnect the L49 hybrid battery junction block assembly connector.

    3. Disconnect the E135 hybrid vehicle control ECU assembly connector.

    4. A01KRCSC92
      *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
      E135-3 (SMRP) - L49-4 (SMRP) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      E135-3 (SMRP) and L49-4 (SMRP) - Body ground and other terminals Power switch off 10 kΩ or higher

    5. Reconnect the E135 hybrid vehicle control ECU assembly connector.

    6. Reconnect the L49 hybrid battery junction block assembly connector.

      Result
      Proceed to
      OK
      NG

    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. Disconnect the L49 hybrid battery junction block assembly connector.

    3. A01KTDMC06
      *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
      L49-2 (GND) - Body ground Power switch off Below 1 Ω

    4. Reconnect the L49 hybrid battery junction block assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT HV BATTERY JUNCTION BLOCK ASSEMBLY (SMRP)

    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. A01KU4BC22
      *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
      L49-4 (SMRP) - L49-2 (GND) -40 to 80°C (-40 to 176°F) 112 to 274 Ω

    4. Install the hybrid battery junction block assembly.

      Result
      Proceed to
      OK
      NG

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

    REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY Click here