HYBRID CONTROL SYSTEM, Diagnostic DTC:P2511-149

DTC Code DTC Name
P2511-149 HV CPU Power Relay Sense Circuit Intermittent No Continuity

DESCRIPTION

This DTC indicates that the power management control ECU monitors the +B power source voltage to detect an instantaneous interruption.

DTC No. INF Code DTC Detection Condition Trouble Area
P2511 149 When the power switch is on (READY), the power management control ECU is reset.

  • Wire harness or connector

  • Power management control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P3110-223 Click here.

CAUTION / NOTICE / HINT

Tech Tips

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


  1. Turn the power switch on (READY) and wait for 30 seconds or more. (If the DTC is not output, drive the vehicle on urban roads according to the freeze frame data item "Vehicle Spd" for approximately 5 minutes.)

PROCEDURE


  1. CHECK AUXILIARY BATTERY TERMINAL


    1. Confirm whether the auxiliary battery terminals have been disconnected recently.

      Result
      Result Proceed to
      Terminals have been disconnected. A
      Terminals have not been disconnected. B

    B

    CHECK AUXILIARY BATTERY TERMINAL (CONTACT PROBLEM) Click here

    A

  2. CONFIRM THAT HYBRID SYSTEM WARNING LIGHT


    1. Turn the power switch on (READY) from off.

    2. Confirm that the hybrid system warning light illuminates.

      Result
      Result Proceed to
      Hybrid system warning light illuminates. A
      Hybrid system warning light does not illuminate. B

      Tech Tips

      DTC P2511-149 may be stored after disconnecting and reconnecting the auxiliary battery terminals. If this happens, the DTC will not be output if the power switch is turned off and then on (READY) again. In this case, clear DTCs to complete the inspection.

    3. Turn the power switch off.


    B

    END

    A

  3. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Read and record the DTCs and freeze frame data.

    5. Clear the DTCs and freeze frame data.

    6. Turn the power switch off.


    NEXT

  4. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      DTC P2511-149 is output again. A
      DTCs other than P2511-149 are also output. B

    5. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  5. CHECK AUXILIARY BATTERY TERMINAL (CONTACT PROBLEM)


    1. Check the connection of the auxiliary battery terminal.

      OK
      The terminal is connected securely and there is no contact problem.

    NG

    CONNECT SECURELY

    OK

  6. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)


    1. Check the connector connections and contact pressure of the relevant terminals for the power management control ECU connectors Click here.

      A005DLOE01
      Text in Illustration
      *A for LHD *B for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.

    NG

    CONNECT SECURELY

    OK

  7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - IGCT RELAY)


    1. Remove the IGCT relay from the engine room relay block and junction block assembly.

    2. Disconnect the A21 and A22 power management control ECU connectors.

      A005EZ1E02
      Text in Illustration
      *1 Engine Room Relay Block and Junction Block Assembly *2 IGCT Relay
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A22-5 (+B1) - 5 (IGCT relay) Power switch off Below 1 Ω
      A21-2 (+B2) - 5 (IGCT relay) Power switch off Below 1 Ω

    4. Install the IGCT relay.

    5. Reconnect the A21 and A22 power management control ECU connectors.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK FOR INTERMITTENT PROBLEMS


    1. Check for intermittent problems Click here.


      1. Check the connection and terminal contact pressure of connectors and wire harnesses between the power management control ECU and the engine room junction block assembly.

      2. When the power switch is on (READY), jiggle the connectors and wire harnesses between the power management control ECU and the engine room relay block and junction block assembly.

        Result
        Result Proceed to
        Problem symptom does not recur. A
        Problem symptom recurs. B

    A

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    B

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA