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 assembly

  • 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 or electric vehicle charger assembly, turn the power switch off. Also, 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 and electric vehicle charger 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 P0AE7-224 is stored, the vehicle cannot be started.

PROCEDURE


  1. READ VALUE USING GTS (SMRP STATUS)


    1. Connect the GTS to the DLm9.

    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 Display 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 Click here.

      A00444GE01
      OK
      The connectors are connected securely and there are no contact pressure problems.
      Text in Illustration
      *A for LHD *B for RHD

    NG

    CONNECT SECURELY

    OK

  3. CHECK CONNECTOR CONNECTION CONDITION (BATTERY PACK WIRE 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. 2 hybrid vehicle battery shield panel Click here.

    3. A0040Q7E03

      Check the connector connections and contact pressure of the relevant terminals for the battery pack wire connector co1 Click here.

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

    4. Install the No. 2 hybrid vehicle battery shield panel.


    NG

    CONNECT SECURELY

    OK

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

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


    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. A00407JE03

      Check the connector connections and contact pressure of the relevant terminals for the hybrid battery junction block assembly o9 Click here.

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

    4. Install the upper hybrid battery cover sub-assembly.


    NG

    CONNECT SECURELY

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  5. CHECK HARNESS AND CONNECTOR (SMRP VOLTAGE)


    1. Turn the power switch on (IG).

    2. A0044B1E51
      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 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

  6. 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.

      A00444GE01
      OK
      The connectors are connected securely and there are no contact pressure problems.
      Text in Illustration
      *A for LHD *B for RHD

    NG

    CONNECT SECURELY

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

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


    1. Disconnect the L5 power management control ECU connector.

    2. A00424SE02
      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 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 - BATTERY PACK WIRE CONNECTOR) Click here

    OK

  8. 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. A0040LAE01
      Text in Illustration
      *1 Engine Room Relay Block and Junction Block Assembly
      *2 AM2 fuse
      *3 IGCT NO. 2 fuse

      Remove the IGCT NO. 2 and AM2 fuses from the engine room relay block and junction block assembly.

    3. Remove the No. 2 hybrid vehicle battery shield panel Click here.

    4. A0040Q7E03

      Disconnect the co1 battery pack wire connector connector.

    5. Disconnect the A20, A21, L5 and L6 power management control ECU connectors.

    6. A0043LLE78
      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 Condition Specified Condition
      L5-3 (SMRP) - A20-2 (+B2) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A21-5 (+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) - A21-6 (MREL) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A21-1 (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) - A21-2 (IG2D) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - L5-14 (SPDI) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A20-16 (GI) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A20-4 (FCTL) Power switch off 10 kΩ or higher

    7. Reconnect the A20, A21, L5 and L6 power management control ECU connectors.

    8. Reconnect the co1 battery pack wire connector.

    9. Install the No. 2 hybrid vehicle battery shield panel.

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK HARNESS AND CONNECTOR (SHORT TO POWER SUPPLY WIRES)

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


    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. A0040LAE01
      Text in Illustration
      *1 Engine Room Relay Block and Junction Block Assembly
      *2 AM2 fuse
      *3 IGCT NO. 2 fuse

      Remove the IGCT NO. 2 and AM2 fuses from the engine room relay block and junction block assembly.

    3. Remove the upper hybrid battery cover sub-assembly Click here.

    4. A00407JE03

      Disconnect the o9 hybrid battery junction block assembly connector.

    5. Disconnect the A20, A21, L5 and L6 power management control ECU connectors.

    6. A0043LLE78
      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 Condition Specified Condition
      L5-3 (SMRP) - A20-2 (+B2) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A21-5 (+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) - A21-6 (MREL) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A21-1 (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) - A21-2 (IG2D) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - L5-14 (SPDI) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A20-16 (GI) Power switch off 10 kΩ or higher
      L5-3 (SMRP) - A20-4 (FCTL) Power switch off 10 kΩ or higher

    7. Reconnect the A20, A21, L5 and L6 power management control ECU connectors.

    8. Reconnect the o9 hybrid battery junction block assembly connector.

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

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  10. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BATTERY PACK WIRE 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. 2 hybrid vehicle battery shield panel Click here.

    3. A0040Q7E03

      Disconnect the co1 battery pack wire connector.

    4. Disconnect the L5 power management control ECU connector.

    5. A0043NZE05
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)
      *b

      Front view of wire harness connector

      (to Battery Pack Wire Connector)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      L5-3 (SMRP) - co1-8 (SMRP) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      L5-3 (SMRP) and co1-8 (SMRP) - Body ground and other terminals Power switch off 10 kΩ or higher

    6. Reconnect the L5 power management control ECU connector.

    7. Reconnect the co1 battery pack wire connector.

    8. Install the No. 2 hybrid vehicle battery shield panel.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK HARNESS AND CONNECTOR (BATTERY PACK WIRE CONNECTOR - 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. 2 hybrid vehicle battery shield panel Click here.

    3. A0040Q7E03

      Disconnect the co1 battery pack wire connector.

    4. A0041N7E03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery Pack Wire Connector)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      co1-7 (GND2) - Body ground Power switch off Below 1 Ω

    5. Reconnect the co1 battery pack wire connector.

    6. Install the No. 2 hybrid vehicle battery shield panel.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK HYBRID 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 No. 1 hybrid vehicle battery shield panel Click here.

    3. A0041TME10

      Disconnect the T3 and T4 hybrid battery junction block assembly terminals.

    4. A004377E04

      Disconnect the a3 hybrid battery junction block assembly connector.

    5. A0042OAE03

      Disconnect the w2 and q8 hybrid battery junction block assembly connectors.

    6. A0040Q7E03

      Disconnect the co1 battery pack wire connector.

    7. A0041G2E07
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery Pack Wire Connector)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      co1-8 (SMRP) - co1-7 (GND2) -40 to 80 °C (-40 to 176°F) 112 to 274 Ω

    8. Reconnect the co1 battery pack wire connector.

    9. Reconnect the a3, w2 and q8 hybrid battery junction block assembly connectors.

    10. Reconnect the T3 and T4 hybrid battery junction block assembly terminals.

    11. Install the No. 1 hybrid vehicle battery shield panel.


    NG

    CHECK HARNESS AND CONNECTOR (BATTERY PACK WIRE CONNECTOR - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY) Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  13. CHECK HARNESS AND CONNECTOR (BATTERY PACK WIRE CONNECTOR - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY)

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


    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. A0040Q7E03

      Disconnect the co1 battery pack wire connector.

    4. A00407JE03

      Disconnect the o9 hybrid battery junction block assembly connector.

    5. A0041C1E06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery Pack Wire Connector)
      *b

      Front 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
      co1-8 (SMRP) and o9-1 (SMRP) - Body ground and other terminals Power switch off Below 1 Ω
      co1-7 (GND2) and o9-2 (GND2) - Body ground and other terminals Power switch off Below 1 Ω

    6. Reconnect the o9 hybrid battery junction block assembly connector.

    7. Reconnect the co1 battery pack wire connector.

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here