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

  • Hybrid vehicle control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P3087-183 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. Turn the power switch off.

    2. Remove the service plug grip Click here.

    3. Disconnect low voltage connector S75 from the power steering converter.

    4. Turn the power switch on (IG).

    5. A01GYAVE02

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

      Tech Tips

      Turning the power switch on (IG) with the service plug grip removed causes an interlock switch system DTC (P0A0D-350) to be set.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      n1-6 (DDOK) - Body ground Power switch on (IG) Below 1 V

    NG

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

    OK

    REPLACE POWER STEERING CONVERTER Click here

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


    1. Turn the power switch off.

    2. Disconnect connector A75 from the hybrid vehicle control ECU.

    3. Turn the power switch on (IG).

    4. A01GYAVE02

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

      Tech Tips

      Turning the power switch on (IG) with the service plug grip removed causes an interlock switch system DTC (P0A0D-350) to be set.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      n1-6 (DDOK) - Body ground Power switch on (IG) Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here