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

DTC Code DTC Name
P0560 System Voltage

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 sets 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.

WIRING DIAGRAM

A01JA3TE29

INSPECTION PROCEDURE

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 or weak.

      OK
      Auxiliary battery is not discharged or weak.

    NG

    CHARGE OR REPLACE AUXILIARY BATTERY

    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

    REPAIR OR REPLACE AUXILIARY BATTERY TERMINAL

    OK

  3. CHECK HARNESS AND CONNECTOR (ECM - EFI MAIN FUSE)


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

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

    3. Remove the EFI MAIN fuse from the engine room relay block and junction block assembly.

    4. Disconnect the ECM connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      EFI MAIN fuse (2) - A57-20 (BATT) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      EFI MAIN fuse (2) or A57-20 (BATT) - Body ground Always 10 kΩ or higher

    6. Reinstall the EFI MAIN fuse.

    7. Reconnect the ECM connector.

    8. Reconnect the positive (+) auxiliary battery terminal.

    9. Reconnect the negative (-) auxiliary battery terminal.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - EFI MAIN FUSE)

    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 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

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

    REPLACE ECM Click here