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. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P3110-223 HV Main Relay Short to +B in the IGCT relay or the IGCT relay is stuck closed

  • Wire harness or connector

  • IGCT relay

  • Power management control ECU

 Does not come on

Master Warning Light:

Comes on

WIRING DIAGRAM

Refer to the wiring diagram for DTC P2511-149.

Click here

CAUTION / NOTICE / HINT

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. 1 engine room relay block and No. 1 junction block assembly.

    2. A0139DMC07
      *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.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RELAY (IGCT)

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY)


    1. Remove the IGCT relay from the No. 1 engine room relay block and No. 1 junction block assembly.

    2. Disconnect the A129 and A130 power management control ECU connectors.

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

      A013A7BC02
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly *2 IGCT Relay
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      		 - -
      Standard Voltage
      Tester Connection Condition Specified Condition
      A130-5 (+B1), A129-2 (+B2) or 5 (IGCT relay) - Body ground Power switch off Below 1 V

    4. Install the IGCT relay.

    5. Reconnect the A129 and A130 power management control ECU connectors.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU for LHD: Click here
    REPLACE POWER MANAGEMENT CONTROL ECU for RHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR