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 or the IGCT relay is stuck closed.

  • Wire harness or connector

  • IGCT relay

  • Power management control ECU

WIRING DIAGRAM

A011VG0E01

INSPECTION PROCEDURE

Tech Tips

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

PROCEDURE

  1. INSPECT RELAY (IGCT)

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

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

      A011YL6E01
      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher
      Text in Illustration
      *1 IGCT Relay

    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 connector A38 and A39 from the power management control ECU.

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

      A011WHCE01
      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
      A39-5 (+B1), A38-2 (+B2) or 5 (IGCT relay) - Body ground Power switch off Below 1 V

    4. Install the IGCT relay.

    5. Connect the power management control ECU connector.

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here