SFI SYSTEM, Diagnostic DTC:P0560

DTC Code DTC Name
P0560 System Voltage

DESCRIPTION

The battery supplies electricity to the ECM even when the engine switch is off. This power allows the ECM to store data such as DTC history and freeze frame data. If the 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. When the engine is next started, the ECM illuminates the MIL and stores the DTC.

DTC No. DTC Detection Condition Trouble Area
P0560 An open in the ECM back-up power source circuit (1 trip detection logic).

  • Open in back-up power source circuit

  • Battery

  • Battery terminals

  • EFI MAIN fuse

  • ECM

Tech Tips

If DTC P0560 is stored, the ECM does not store other DTCs and the data stored in the ECM are partly cleared.

WIRING DIAGRAM

A005TDSE01

INSPECTION PROCEDURE

Note

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. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (ECM - EFI MAIN FUSE, EFI MAIN FUSE - BATTERY)

    A005RSKE01
    Text in Illustration
    *1 EFI MAIN
    *2 Engine Room No. 1 Relay Block
    *3

    Front view of wire harness connector

    (to ECM)

    1. Check the harness and connector between the EFI MAIN fuse and ECM.


      1. Remove the EFI MAIN fuse from the engine room No. 1 relay block.

      2. Disconnect the A40 ECM connector.

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

        Standard Resistance (Check for Open)
        Tester Connection Condition Specified Condition
        2 (EFI MAIN fuse) - A40-20 (BATT) Always Below 1 Ω
        Standard Resistance (Check for Short)
        Tester Connection Condition Specified Condition
        2 (EFI MAIN fuse) or A40-20 (BATT) - Body ground Always 10 kΩ or higher

      4. Reconnect the ECM connector.

      5. Reinstall the EFI MAIN fuse.

    2. Check the harness and connector between the EFI MAIN fuse and battery.


      1. Remove the EFI MAIN fuse from the engine room No. 1 relay block.

      2. Disconnect the cable from the negative (-) battery terminal.

      3. Disconnect the cable from the positive (+) battery terminal.

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

        Standard Resistance (Check for Open)
        Tester Connection Condition Specified Condition
        Battery positive (+) terminal - 1 (EFI MAIN fuse) Always Below 1 Ω
        Standard Resistance (Check for Short)
        Tester Connection Condition Specified Condition
        Battery positive (+) terminal or 1 (EFI MAIN fuse) - Body ground Always 10 kΩ or higher

      5. Reconnect the cable to the positive (+) battery terminal.

      6. Reconnect the cable to the negative (-) battery terminal.

      7. Reinstall the EFI MAIN fuse.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT BATTERY


    1. Check that the battery is not depleted.

      OK
      Battery is not depleted.

    NG

    REPLACE BATTERY

    OK

  3. CHECK BATTERY TERMINAL


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

      OK
      Battery terminals are not loose or corroded

    NG

    REPAIR OR REPLACE BATTERY TERMINAL

    OK

  4. CHECK WHETHER DTC OUTPUT RECURS


    1. Connect the intelligent tester to the DLC3.

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

    3. Clear DTCs Click here.

    4. Turn the engine switch off and turn the tester off.

    5. Start the engine and turn the tester on.

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

    7. Read DTCs.

      Result
      Result Proceed to
      DTC P0560 output A
      No DTC output B

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

    REPLACE ECM Click here