SFI SYSTEM, Diagnostic DTC:P0560

DTC Code DTC Name
P0560 System Voltage

DESCRIPTION

The battery supplies electricity to the ECM even when the ignition switch is off. This power allows the ECM to store data such as DTC history, freeze frame data and fuel trim values. 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
Tip:

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

WIRING DIAGRAM

A342930E01

CAUTION / NOTICE / HINT

Note:

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

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

Tip:

Read freeze frame data using the GTS. 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. CHECK HARNESS AND CONNECTOR (ECM - BATTERY)

    1. Disconnect the ECM connector.

    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

      A76-1 (BATT) - Battery positive cable

      Always

      Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection

      Condition

      Specified Condition

      A76-1 (BATT) or Battery positive cable - Body ground

      Always

      10 kΩ or higher

    5. Reconnect the ECM connector.

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

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

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - BATTERY)

  2. INSPECT BATTERY

    1. Check the battery voltage.

      Standard voltage

      11 to 14 V

    REPLACE BATTERY

  3. CHECK BATTERY TERMINAL

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

      OK

      Battery terminals are not loose or corroded.

    REPAIR OR REPLACE BATTERY TERMINAL

  4. CHECK WHETHER DTC OUTPUT RECURS

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs (Click here).

    5. Turn the ignition switch off and turn the GTS off.

    6. Start the engine and turn the GTS on.

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

    8. Read the DTCs.

      Table 1. Result

      Result

      Proceed to

      DTC P0560 is output

      A

      DTC is not output

      B

    REPLACE ECM

    (Click here)

    CHECK FOR INTERMITTENT PROBLEMS

    (Click here)