SFI SYSTEM(w/o EGR System), Diagnostic DTC:P0560

DTC Code DTC Name
P0560 System Voltage

MONITOR DESCRIPTION

The auxiliary battery supplies electricity to the ECM even when the power switch is off. This power allows the ECM to store data such as DTC history, freeze frame data and fuel trim values. If the auxiliary battery voltage falls below a minimum level, the memory is cleared and the ECM determines that there is a malfunction in the power supply circuit. The next time the engine is started, the ECM illuminates the MIL and stores the DTC.

DTC No. DTC Detection Condition Trouble Area
P0560 Open in ECM back up power source circuit (1 trip detection logic).
  • Open in back up power source circuit

  • Auxiliary battery

  • Auxiliary battery terminals

  • ECM

Tech Tips

If DTC P0560 is stored, the ECM does not store other DTCs or the data stored in the ECM may be partially cleared.

MONITOR STRATEGY

Required Sensors/Components (Main) ECM
Frequency of Operation Continuous

TYPICAL MALFUNCTION THRESHOLDS

Both of following conditions are met -
ECM power source Less than 3.5 V
Stand-by RAM Initialized

CONFIRMATION DRIVING PATTERN


  1. Connect the intelligent tester to the DLC3.

  2. Turn the power switch on (IG) and turn the tester on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for at least 30 seconds.

  5. Turn the power switch on (IG) and turn the tester on.

  6. Wait 5 seconds or more.

  7. Enter the following menus: Powertrain / Engine and ECT / DTC.

  8. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  10. Input the DTC: P0560.

  11. Check the DTC judgment result.

    Tester Display Description
    NORMAL
    • DTC judgment completed

    • System normal

    ABNORMAL
    • DTC judgment completed

    • System abnormal

    INCOMPLETE
    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    N/A
    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

B001LJLE26
*a MAIN
*b P/I 1
*c EFI MAIN
*d Auxiliary Battery

CAUTION / NOTICE / HINT

Note


  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

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

Tech Tips

Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. INSPECT AUXILIARY BATTERY


    1. Check that the auxiliary battery is not discharged Click here.

      OK
      Auxiliary battery is not depleted.

    NG
    OK
  2. CHECK AUXILIARY BATTERY TERMINAL


    1. Check that the auxiliary battery terminals are not loose or corroded.

      OK
      Auxiliary battery terminals are not loose or corroded.

    NG
    OK
  3. CHECK HARNESS AND CONNECTOR (ECM - AUXILIARY BATTERY)


    1. Disconnect the negative (-) auxiliary battery terminal.

    2. Disconnect the positive (+) auxiliary battery terminal.

    3. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Positive (+) auxiliary battery terminal - A60-20 (BATT) Always Below 1 Ω
      Positive (+) auxiliary battery terminal or A60-20 (BATT) - Body ground Always 10 kΩ or higher

    NG
    OK
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0560)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Clear the DTCs Click here.

    5. Turn the power switch off and turn the tester off.

    6. Turn the power switch on (IG) and turn the tester on.

    7. Wait for 5 seconds or more.

    8. Enter the following menus: Powertrain / Engine and ECT / DTC.

    9. Read the DTCs.

      Result
      Result Proceed to
      DTC P0560 is output A
      DTC is not output B

    A
    B