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 certification ECU (smart key ECU assembly) and detects a malfunction.

Tech Tips

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

DTC No. INF Code DTC Detection Condition Trouble Area
P2532 772 When communication is lost from ECU that has IG1 circuit power supply and power is supplied to IG2 terminal.

  • CAN communication system

  • Wire harness or connector

  • No. 1 integration relay (IG2 relay)

  • Hybrid vehicle control ECU assembly

WIRING DIAGRAM

A000976E03
*a ECU-IG2 NO. 3
*b Hybrid Vehicle Control ECU Assembly
*c No. 1 Integration Relay
*d Certification ECU (Smart Key ECU Assembly)

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.

      Result
      Result Proceed to
      P2532-772 only is output. A
      DTCs except P2532-772 are output. B

    5. Turn the power switch off.


    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  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: 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

    A

  3. CHECK HARNESS AND CONNECTOR (+B SHORT)


    1. A0004GYE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

      Disconnect connector A78 from the hybrid vehicle control ECU assembly.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A78-3 (IG2) - Body ground Power switch off 1 V or less
      Result
      Result Proceed to
      NG A
      OK B

    3. Reconnect the A78 hybrid vehicle control ECU assembly connector.


    B

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    A

  4. INSPECT INTEGRATION NO.1 RELAY (IG2)

    Click here


    NG

    REPLACE NO. 1 INTEGRATION RELAY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - NO. 1 INTEGRATION RELAY)


    1. Disconnect the A78 hybrid vehicle control ECU assembly connector.

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

    3. A0004GYE02
      Text in Illustration
      *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 Switch Condition Specified Condition
      A78-3 (IG2) - Body ground Power switch off 1 V or less

    4. Install the No. 1 integration relay.

    5. Reconnect the A78 hybrid vehicle control ECU assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK FOR INTERMITTENT PROBLEMS

    Click here


    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA