HYBRID CONTROL SYSTEM, Diagnostic DTC:P3086-184

DTC Code DTC Name
P3086-184 Short Circuit in DC / DC Converter EMPS

DESCRIPTION

Refer to the description for DTC P3087-183 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P3086 184 Short to +B in the power steering converter permission signal line (PSOK)

  • Wire harness or connector

  • Power steering converter assembly

  • Power management control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P3087-183 Click here.

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 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. CHECK HARNESS AND 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. A01NFJTE01
      Text in Illustration
      *1 Power Steering Converter Assembly (without Active Stabilizer)
      *2 Power Steering Converter Assembly (with Active Stabilizer)

      Disconnect connector F101 from the power steering converter assembly.

    3. Turn the power switch on (IG).

    4. A01NF68E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Steering Converter Assembly (without Active Stabilizer))
      *2

      Front view of wire harness connector

      (to Power Steering Converter Assembly (with Active Stabilizer))

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F101-6 (DDOK) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the connector of the power steering converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.

    6. Connect the power steering converter assembly connector.


    NG

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - POWER STEERING CONVERTER) Click here

    OK

    REPLACE POWER STEERING CONVERTER ASSEMBLY Click here

  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - POWER STEERING CONVERTER)

    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. A01NFJTE01
      Text in Illustration
      *1 Power Steering Converter Assembly (without Active Stabilizer)
      *2 Power Steering Converter Assembly (with Active Stabilizer)

      Disconnect connector F101 from the power steering converter assembly.

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

    7. A01NGXZE14
      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
      F98-18 (PSOK) - A80-2 (+B2) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - A81-5 (+B1) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - F97-1 (AM22) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - F98-7 (AM21) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - A81-6 (MREL) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - A81-1 (IG2) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - F98-1 (ACCD) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - F98-2 (IG1D) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - A81-2 (IG2D) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - F97-14 (SPDI) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - A80-16 (GI) Power switch off 10 kΩ or higher
      F98-18 (PSOK) - A80-4 (FCTL) Power switch off 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK (for LHD) B
      OK (for RHD) C

    8. Connect the power management control ECU connectors.

    9. Connect the power steering converter assembly connector.

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

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

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


    B

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD) Click here

    C

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD) Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR