HYBRID CONTROL SYSTEM, Diagnostic DTC:P2532-772

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

DESCRIPTION

w/ Power Switch:

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

w/o Power Switch:

The hybrid vehicle control ECU detects that the IG2 relay is stuck ON (closed) based on IG signals received from the main body ECU via CAN communication.

DTC No. INF Code DTC Detection Condition Trouble Area
P2532 772 When communication from ECUs with an IG1 power source is interrupted and power source voltage is still applied to terminal IG2.

  • Fuse (ECU-IG NO. 1,ECU-IG NO. 2, AM1)

  • Wire harness or connector

  • Instrument panel junction block assembly

  • Hybrid vehicle control ECU

  • No. 1 integration relay (IG2 relay)

  • Ignition or starter switch assembly

Tech Tips

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

WIRING DIAGRAM

A004EU8E05

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 ignition switch to ON (IG) and wait for 15 seconds or more.

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

PROCEDURE


  1. CHECK VEHICLE CONDITION


    1. Check the vehicle condition.

      Result
      Result Proceed to
      w/ Power Switch A
      w/o Power Switch B

    B

    CLEAR DTC Click here

    A

  2. 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

  3. 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*1

      C*2

      • *1: w/ Toyota Safety Sense

      • *2: w/o Toyota Safety Sense

    4. Turn the power switch off.


    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  4. CHECK HARNESS AND CONNECTOR (+B SHORT)


    1. A004EMGE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

      Disconnect the hybrid vehicle control ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A26-3 (IG2) - Body ground power switch off 1 V or less
      Result
      Result Proceed to
      NG A
      OK B

    3. Connect the hybrid vehicle control ECU connector.


    B

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    A

  5. INSPECT NO. 1 INTEGRATION RELAY (IG2 RELAY)

    Click here


    NG

    REPLACE NO. 1 INTEGRATION RELAY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - IG2 RELAY)


    1. Disconnect the hybrid vehicle control ECU connector.

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

    3. A004EMGE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A26-3 (IG2) - Body ground Ignition switch off 1 V or less

    4. Install the No. 1 integration relay.

    5. Connect the hybrid vehicle control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK FOR INTERMITTENT PROBLEMS


    A

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    B

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  8. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to 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 ignition switch off.


    NEXT

  9. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON (IG).

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

    4. Check if DTCs are output.

      Result
      Result Proceed to
      Only P2532-772 is output or P2532-772 and DTCs other than U0140-146 are also output. A
      U0140-146 is output. B
      DTCs other than P2532-772 or U0140-146 are output. C
      No DTCs are output. D

    5. Turn the ignition switch off.


    B

    GO TO DTC CHART (U0140-146) Click here

    C

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    D

    CHECK DTC OUTPUT (HYBRID CONTROL) Click here

    A

  10. CHECK FUSE (ECU-IG NO. 1, ECU-IG NO. 2, AM1)


    1. A004EEUE03
      Text in Illustration
      *1 Instrument panel junction block assembly
      *2 ECU-IG NO. 1 fuse
      *3 ECU-IG NO. 2 fuse
      *4 AM1 fuse

      Remove the ECU-IG NO. 1 fuse, ECU-IG NO. 2 fuse and AM1 fuse from the instrument panel junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      ECU-IG NO. 1 fuse terminal Always Below 1 Ω
      ECU-IG NO. 2 fuse terminal Always Below 1 Ω
      AM1 fuse terminal Always Below 1 Ω

    3. Install the ECU-IG NO. 1 fuse, ECU-IG NO. 2 fuse and AM1 fuse.


    NG

    REPLACE FUSE (ECU-IG NO. 1, ECU-IG NO. 2, AM1)

    OK

  11. CHECK HARNESS AND CONNECTOR (IG1 NO. 1 RELAY POWER SOURCE CIRCUIT)


    1. Disconnect the instrument panel junction block assembly connector.

    2. A004GCNE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Instrument Panel Junction Block Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      3E-1 - Body ground Ignition switch off 11 to 14 V

    3. Connect the instrument panel junction block assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK HARNESS AND CONNECTOR (IG1 NO. 1 RELAY BODY GROUND)


    1. Disconnect the instrument panel junction block assembly connector.

    2. A004FRCE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Instrument Panel Junction Block Assembly)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      3B-8 - Body ground Ignition switch off Below 1 Ω

    3. Connect the instrument panel junction block assembly connector.


    OK

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Turn the ignition switch off and leave the vehicle as it is for 10 seconds or more.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON (IG).

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

    5. Check if DTCs are output.

      Result
      Result Proceed to
      DTC P2532-772 is output. A
      No DTC is output. B

    6. Turn the ignition switch off.


    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  14. CHECK HARNESS AND CONNECTOR (+B SHORT)


    1. Disconnect the hybrid vehicle control ECU connector.

    2. A004EMGE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A26-3 (IG2) - Body ground Ignition switch off Below 1 V
      Result
      Result Proceed to
      NG A
      OK B

    3. Connect the hybrid vehicle control ECU connector.


    B

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    A

  15. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - IG2 RELAY)


    1. Disconnect the hybrid vehicle control ECU connector.

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

    3. A004EMGE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A26-3 (IG2) - Body ground Ignition switch off Below 1 V

    4. Install the No. 1 integration relay.

    5. Connect the hybrid vehicle control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. INSPECT NO. 1 INTEGRATION RELAY (IG2 RELAY)

    Click here


    NG

    REPLACE NO. 1 INTEGRATION RELAY Click here

    OK

  17. CHECK HARNESS AND CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY - IG2 RELAY)


    1. Disconnect the ignition or starter switch assembly connector.

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

    3. A004GDTE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Ignition or Starter Switch Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F11-6 (IG2) - Body ground Ignition switch off Below 1 V

    4. Install the No. 1 integration relay.

    5. Connect the ignition or starter switch assembly connector.


    OK

    REPLACE IGNITION OR STARTER SWITCH ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR