STOP AND START SYSTEM, Diagnostic DTC:P0562

DTC Code DTC Name
P0562 System Voltage Low

DESCRIPTION

The engine stop and start ECU monitors +B terminal voltage while the engine is stopped by stop and start control. If the voltage drops below the specified level, the engine stop and start ECU stores DTC P0562 and blinks the stop and start cancel indicator light.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
P0562 System Voltage Low

Both of the following conditions are met for 2 seconds or more (1 trip detection logic):


  • +B terminal voltage is 9 V or less.

  • Engine stopped by stop and start control.

  • Battery

  • Wire harness or connector

  • EFI MAIN relay (for 1WW)

  • EFI-MAIN relay (except 1WW)

  • Engine stop and start ECU

 Blinks DTC stored

CONFIRMATION DRIVING PATTERN

Tech Tips

DTCs for the stop and start system are not cleared automatically even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.

Click here


  1. CONFIRMATION AFTER TROUBLESHOOTING

    Tech Tips


    • If the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited until refresh charge is completed. In this case, drive the vehicle approximately 5 to 40 minutes until refresh charge is completed and stop and start control operation is permitted.

    • Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

      Click here


      Powertrain > Stop and Start > Clear DTCs

    4. Start the engine and warm it up.

    5. Drive the vehicle at 7 km/h (4.3 mph) or more.

      CAUTION:

      When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

    6. Stop the vehicle, move the shift lever to neutral and release the clutch pedal. (for Manual Transaxle)

    7. Depress the brake pedal and stop the vehicle. (for CVT)

    8. Keep the engine stopped by stop and start control for 1 second or more. (Keep the shift lever in D. (for CVT))

    9. Depress the clutch pedal and start the engine. (for Manual Transaxle)

      Tech Tips

      If the engine cranks slowly when the engine is restarted, it can be determined that the battery voltage is low.

    10. Release the brake pedal with the shift lever in D to start the engine. (for CVT)

      Tech Tips

      If the engine cranks slowly when the engine is restarted, it can be determined that the battery voltage is low.

    11. Check that DTCs are not output.

      Click here


      Powertrain > Stop and Start > Trouble Codes

  2. STOP AND START SYSTEM OPERATION CHECK

    Tech Tips

    If the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited until refresh charge is completed. In this case, drive the vehicle approximately 5 to 40 minutes until refresh charge is completed and stop and start control operation is permitted.


    1. Start the engine and warm it up.

    2. Turn the air conditioning system off.

    3. Drive the vehicle at 7 km/h (4.3 mph) or more.

      CAUTION:

      When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

    4. Stop the vehicle, move the shift lever to neutral and release the clutch pedal. (for Manual Transaxle)

    5. Depress the brake pedal and stop the vehicle. (for CVT)

    6. Allow the engine to stop by stop and start control. (Keep the shift lever in D. (for CVT))

    7. Depress the clutch pedal and start the engine. (for Manual Transaxle)

    8. Release the brake pedal with the shift lever in D to start the engine. (for CVT)

WIRING DIAGRAM


  1. for 1WW

    B0041QXE01

  2. except 1WW

    B0043DOE01

CAUTION / NOTICE / HINT

Note


  • Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.

    Click here

  • After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.

    Click here

  • After replacing the engine stop and start ECU or airbag sensor assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

Tech Tips

Using the GTS, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.

Click here

PROCEDURE


  1. READ VALUE USING GTS (BATTERY VOLTAGE)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

      Tech Tips

      Do not start the engine.

    3. Turn the GTS on.

    4. Turn off all electrical systems.

    5. Enter the following menus: Powertrain / Stop and Start / Data List / Battery Voltage.


      Powertrain > Stop and Start > Data List
      Tester Display
      Battery Voltage

    6. Read the battery voltage displayed on the GTS screen.

      Result
      Result Proceed to
      Below 9 V (for 1WW) A
      Below 9 V (except 1WW) B
      9 to 14 V C

    B

    INSPECT RELAY (EFI-MAIN RELAY) Click here

    C

    CHECK BATTERY for 1ND-TV: Click here
    CHECK BATTERY for 1WW: Click here
    CHECK BATTERY for 8NR-FTS: Click here

    A

  2. INSPECT RELAY (EFI MAIN RELAY)


    1. Inspect the EFI MAIN relay.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 4 Click here

    NG

    REPLACE RELAY (EFI MAIN RELAY)

  3. INSPECT RELAY (EFI-MAIN RELAY)


    1. Inspect the EFI-MAIN relay.

      for 1ND-TV: Click here

      for 8NR-FTS: Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RELAY (EFI-MAIN RELAY)

    OK

  4. CHECK HARNESS AND CONNECTOR (+B TERMINAL VOLTAGE)


    1. Turn the ignition switch to ON.

      B0042LKC24
      *a

      Component with harness connected

      (Engine Stop and Start ECU)

      		 - -

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A8-5 (+B) - Body ground Ignition switch ON 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ENGINE STOP AND START ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE STOP AND START ECU - EFI-MAIN RELAY)