HYBRID CONTROL SYSTEM, Diagnostic DTC:P2532-772

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

DESCRIPTION

The power source and HV CPU processors and their functions are integrated into the power management control ECU. The power source CPU and HV CPU use CAN communication to communicate with each other inside the power management control ECU. The power source CPU controls the opening and closing of the IG2 relay. The HV CPU detects that the IG2 relay is stuck ON (closed) based on relay operation information received from the power source CPU via CAN communication.

Tech Tips

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

DTC No. INF Code DTC Detection Condition Trouble Area
P2532 772

Although the power management control ECU is sending a signal to open the IG2 relay, voltage is applied to the IG2 terminal.

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

(1 trip detection logic)

  • Wire harness or connector

  • No. 1 integration relay (IG2 relay)

  • Power management control ECU

WIRING DIAGRAM

A01I57PE01

INSPECTION PROCEDURE

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 HARNESS AND CONNECTOR (+B SHORT)


    1. A01I3K3E07
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      Disconnect the A39 power management control ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A39-1 (IG2) - Body ground Power switch off Below 1 V
      A39-2 (IG2D) - Body ground Power switch off Below 1 V
      Result
      Result Proceed to
      NG A
      OK B

    3. Reconnect the A39 power management control ECU connector.


    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    A

  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 1 INTEGRATION RELAY)


    1. Disconnect the A39 power management control ECU connector.

    2. A01I3K3E07
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

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

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A39-1 (IG2) - Body ground Power switch off Below 1 V
      A39-2 (IG2D) - Body ground Power switch off Below 1 V

    4. Install the No. 1 integration relay.

    5. Reconnect the A39 power management control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE NO. 1 INTEGRATION RELAY Click here