HYBRID CONTROL SYSTEM, Diagnostic DTC:P2532-772

DTC Code DTC Name
P2532-772 Ignition Switch Run Position Circuit High

DESCRIPTION

The hybrid vehicle control ECU assembly monitors the IGSW signals sent from the smart key ECU assembly (certification ECU) and detects a malfunction.

Tech Tips

If DTC P2532-772 is stored, the vehicle will turn off (READY off).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P2532-772 Ignition Switch Run Position Circuit High

When communication is lost from ECU that has IG1 circuit power supply and power is supplied to IG2 terminal

Although the power switch is turned off, the HV control system is not turned off.

(1 trip detection logic)

  • CAN communication system

  • Wire harness or connector

  • Semiconductor pwr integration ECU (IG2 relay)

  • Hybrid vehicle control ECU assembly

 Does not come on

Master Warning Light:

Comes on

WIRING DIAGRAM

B004EIOE06

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 (IG) and wait for 15 seconds or more.

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

PROCEDURE


  1. 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 for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Proceed to
      P2532-772 only is output.
      DTCs except P2532-772 are output.

    5. Turn the power switch off.


    DTCs except P2532-772 are output.

    GO TO STEP 6 Click here

    P2532-772 only is output.

  2. READ VALUE USING GTS (CAN BUS CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: System Select / CAN Bus Check.


      CAN Bus Check
      Result
      Result Proceed to
      All of the ECUs and sensors that are currently connected to the CAN communication system are displayed. A
      None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed. B

    4. Turn the power switch off.


    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  3. CHECK HARNESS AND CONNECTOR (+B SHORT)


    1. B004EP8C06
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

      Disconnect the A80 hybrid vehicle control ECU assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A80-3 (IG2) - Body ground Power switch off 1 V or less

    3. Reconnect the A80 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    NG

  4. INSPECT SEMICONDUCTOR POWER INTEGRATION ECU (IG2)

    Click here

    Result
    Proceed to
    OK
    NG

    NG

    REPLACE SEMICONDUCTOR POWER INTEGRATION ECU Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - SEMICONDUCTOR PWR INTEGRATION ECU)


    1. Disconnect the A80 hybrid vehicle control ECU assembly connector.

    2. Remove the semiconductor pwr integration ECU from the No. 1 engine room relay block and No. 1 junction block assembly.

      Click here

    3. B004EP8C06
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A80-3 (IG2) - Body ground Power switch off 1 V or less

    4. Install the semiconductor pwr integration ECU.

    5. Reconnect the A80 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK FOR INTERMITTENT PROBLEMS


    1. Check for intermittent problems.

      Click here


      1. Check the connection and terminal contact pressure of the connectors and wire harnesses between the hybrid vehicle control ECU assembly and the No. 1 engine room relay block and No. 1 junction block assembly.

      2. When the power switch is on (READY), jiggle the connectors and wire harnesses between the hybrid vehicle control ECU assembly and the No. 1 engine room relay block and No. 1 junction block assembly.

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

    Problem symptom does not recur.

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    Problem symptom recurs.

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA