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 will illuminate the MIL and set 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

  • Battery

  • Battery terminals

  • EFI MAIN fuse

  • ECM

Tech Tips

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

WIRING DIAGRAM

A005TYRE12

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. 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. A005RXEE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to ECM)

      Disconnect the ECM connector.

    2. Disconnect the negative battery cable.

    3. Disconnect the positive battery cable.

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

      Standard Resistance (Check for open)
      Tester Connection Condition Specified Condition
      A40-20 (BATT) - Battery positive cable Always Below 1 Ω
      Standard Resistance (Check for short)
      Tester Connection Condition Specified Condition
      A40-20 (BATT) or Battery positive cable - Body ground Always 10 kΩ or higher

    5. Reconnect the ECM connector.

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

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - BATTERY)

    OK

  2. INSPECT BATTERY


    1. Check the battery voltage.

      Battery voltage
      11 to 14 V

    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 ignition switch to ON.

    3. Turn the tester on.

    4. Clear the DTCs Click here.

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

    6. Start the engine and turn the tester on.

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

    8. 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