SFI SYSTEM, Diagnostic DTC:P0560

DTC Code DTC Name
P0560 System Voltage

MONITOR 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, these memories are 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 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

  • EFI No. 1 fuse

  • ECM

Tech Tips

If DTC P0560 is set, the ECM does not store other DTCs.

WIRING DIAGRAM

A017AZXE43

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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

PROCEDURE


  1. INSPECT ECM (BATT VOLTAGE)


    1. A017C9IE21
      Text in Illustration
      *a

      Component with harness connected

      (ECM)

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

      Standard voltage
      Tester Connection Condition Specified Condition
      D56-24 (BATT) - B48-12 (E1) Always 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (ECM - EFI NO. 1 FUSE) Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  2. CHECK HARNESS AND CONNECTOR (ECM - EFI NO. 1 FUSE)


    1. Check the harness and the connector between the EFI No. 1 fuse and ECM.


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

      2. Disconnect the 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
        EFI No. 1 fuse (2) - D56-24 (BATT) Always Below 1 Ω
        Check for short
        Tester Connection Condition Specified Condition
        EFI No. 1 fuse (2) or D56-24 (BATT) - Body ground Always 10 kΩ or higher

      4. Reconnect the ECM connector.

      5. Reinstall the EFI No. 1 fuse.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - EFI NO. 1 FUSE)

    OK

    CHECK AND REPLACE ENGINE ROOM RELAY BLOCK