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

IGCT relay stuck on (+B short):

IGCT relay is stuck on or a short to B+ exists.

Power to the power management control ECU does not shut down when the power switch is turned off.

(1 trip detection logic)

  • Wire harness or connector

  • IGCT relay

  • Power management control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P2511-149 Click here.

INSPECTION PROCEDURE

Tech Tips


  • If auxiliary battery voltage is applied to the +B1 or +B2 terminal in the power management control ECU even when the power switch is turned off, a short to B+ exists.

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


    1. Turn the power switch on (IG) and wait for 15 seconds or more.

    2. Turn the power 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. A01I28XE01
      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 A38 and A39 power management control ECU connectors.

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

      A01I5JBE06
      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
      A39-3 (+B1), A38-1 (+B2) or 5 (IGCT relay) - Body ground Power switch off Below 1 V

    4. Install the IGCT relay.

    5. Reconnect the A38 and A39 power management control ECU connectors.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here