HYBRID CONTROL SYSTEM, Diagnostic DTC:P3110-223

DTC Code DTC Name
P3110-223 HV Main Relay

DESCRIPTION

The power management control ECU monitors the IGCT relay and detects the following malfunction.

DTC No. INF Code DTC Detection Condition Trouble Area
P3110 223 There is a short to +B in the IGCT relay circuit or the IGCT relay is stuck closed.

  • Wire harness or connector

  • IGCT relay

  • Power management control ECU

WIRING DIAGRAM

A01V02QE04

CAUTION / NOTICE / HINT

Tech Tips


  • When the circuit is shorted to +B, the auxiliary battery voltage will be applied to terminal +B1 or +B2 of the power management control ECU, even though the power switch is off.

  • After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


    1. Turn the ignition switch to ON (IG) and wait for 15 seconds or more.

    2. Turn the ignition switch off and wait for 30 seconds or more.

PROCEDURE


  1. INSPECT RELAY (IGCT)


    1. Remove the IGCT relay from the No. 2 engine room relay block.

    2. A01UYTHE01
      Text in Illustration
      *1 IGCT Relay

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher

    3. Install the IGCT relay.


    NG

    REPLACE RELAY (IGCT)

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO.2 ENGINE ROOM RELAY BLOCK


    1. Remove the IGCT relay from the No. 2 engine room relay block.

    2. Disconnect the power management control ECU connectors.

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

      A01V0BQE02
      Text in Illustration
      *1 No. 2 Engine Room Relay Block *2 IGCT relay
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      		 - -
      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A27-5 (+B1), A26-2 (+B2) or 5 (IGCT relay) - Body ground Ignition switch off Below 1 V

    4. Install the IGCT relay.

    5. Connect the power management control ECU connector.


    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR