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HYBRID CONTROL SYSTEM, Diagnostic DTC:P3004-803

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DTC Code DTC Name
P3004-803 High Voltage Power Resource
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DESCRIPTION

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

DTC No. INF Code DTC Detection Condition Trouble Area
P3004 803

One of the following occurs while the power switch is on (READY):


  • Electric battery fuse in the service plug grip has an open circuit

  • Service plug grip is not installed

  • SMRB remains open

  • SMRG remains open

  • High voltage cable has an open circuit

  • Hybrid battery junction block assembly

  • Wire harness or connector
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WIRING DIAGRAM

Refer to the wiring diagram for DTC P0AE6-225 (Click here).

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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 (Click here).

    Tip:

    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).

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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Check for DTCs.

      Result
      Result Proceed to
      P3004-803 only is output, or DTCs except the ones in the table below are also output. A
      Any of the following DTCs including pending DTCs are also output. B
      P0A95-123 is also output. C
      DTC No. Relevant Diagnosis
      P0A1A-151, 155, 156, 658, 659 Generator Control Module
      P0A1B-164, 193, 512, 661, 786 Drive Motor "A" Control Module
      P0A1D-148 Hybrid Powertrain Control Module
      P0A78-266, 267, 586 Drive Motor "A" Inverter Performance
      P0A94-442 DC/DC Converter Performance
      P0ADB-227 Hybrid Battery Positive Contactor Control Circuit Low
      P0ADC-226 Hybrid Battery Positive Contactor Control Circuit High
      P0ADF-229 Hybrid Battery Negative Contactor Control Circuit Low
      P0AE0-228 Hybrid Battery Negative Contactor Control Circuit High
      P0C76-523 Hybrid Battery System Discharge Time Too Long
      P2511-149 ECM/PCM Power Relay Sensor Circuit Intermittent
      P3004-131, 132 High Voltage Power Resource
      P324E-788 MG-ECU Power Relay Intermittent Circuit
      U0110 (all INF codes)*1 Lost Communication with Drive Motor Control Module "A"
      Tip:

      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.

      • P3004-803 may be stored due to a malfunction which causes the DTCs in the preceding table to be stored. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a reproduction test to check that no DTCs are output.

    5. Turn the power switch off.


  2. Click here

    CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Read and record the DTCs and freeze frame data.

    5. Clear DTCs and freeze frame data.

    6. Turn the power switch off.


  3. Click here

    CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (READY).

      Tip:

      • If the power switch could not be turned on (READY), turn the power switch off and check for DTCs after turning the power switch on (READY) again.

      • Because P3004-131 uses 2-trip detection logic, the DTC detection conditions need to be met 2 times.

    3. Ensure the safety of the areas in front and at the back of the vehicle.

    4. Move the shift lever to D and depress both the accelerator pedal and brake pedal at the same time.

      Tip:

      • Depressing both the accelerator pedal and brake pedal at the same time causes the HV battery current to flow and ensures that there is no problem with the high-voltage wiring.

      • Depressing both the accelerator pedal and brake pedal at the same time causes "Accelerator and Brake Depress" in the inappropriate operation and history data to be counted.

    5. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    6. Check for DTCs.

      Result
      Result Proceed to
      P3004-803 is output, or no DTCs are output. A
      Power switch could not be turned on (READY) and DTC P3004-131 is output. B

    7. Turn the power switch off.


  4. Click here

    CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)


    1. A0009DG

      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.

  5. Click here

    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. Disconnect the H1 power management control ECU connector.

    3. Remove the No. 4 hybrid battery shield panel (Click here).

    4. Disconnect the Q6 hybrid battery junction block assembly connector.

      Tip:

      Before disconnecting the connector, check whether it is connected securely to the hybrid battery junction block assembly.

    5. A0008RYE03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H1-4 (SMRB) - Q6-1 (SMRB) Power switch off Below 1 Ω
      H1-2 (SMRG) - Q6-3 (SMRG) Power switch off Below 1 Ω
      Table 1. 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)

    6. Reconnect the Q6 hybrid battery junction block assembly connector.

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

    8. Reconnect the H1 power management control ECU connector.


    • OK

      REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR