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, freeze frame data and fuel trim values. If the battery voltage falls below a minimum level, the stored ECM data 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 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

  • ECM

Tech Tips

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

WIRING DIAGRAM

A001FBVE34
*a EFI MAIN
*b EFI NO. 1
*c Battery

CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition 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, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK FUSE (EFI MAIN)


    1. A001D41E01
      *1 Engine Room No. 2 Relay Block
      *2 EFI MAIN

      Remove the EFI MAIN fuse from the engine room No. 2 relay block.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      EFI MAIN fuse Always Below 1 Ω

    NG

    CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE

    OK

  2. INSPECT ECM (BATT VOLTAGE)


    1. A001BKPE02
      *1 ECM Connector

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A14-7 (BATT) - E3-1 (E1) Engine switch on (IG) 9 to 14 V

    OK

    REPLACE ECM Click here

    NG

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


    1. A001CSHE01
      Engine Room No. 2 Relay Block
      *1 EFI MAIN
      *2 ECM Connector

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


      1. Remove the EFI MAIN fuse from the engine room No. 2 relay block.

      2. Disconnect the A14 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 MAIN fuse (2) - A14-7 (BATT) Always Below 1 Ω
        Standard resistance (Check for short)
        Tester Connection Condition Specified Condition
        EFI MAIN fuse (2) or A14-7 (BATT) - Body ground Always 10 kΩ or higher

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


      1. Remove the EFI MAIN fuse from the engine room No. 2 relay block.

      2. Disconnect the positive battery terminal Click here.

      3. 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 - EFI MAIN fuse (1) Always Below 1 Ω
        Standard resistance (Check for short)
        Tester Connection Condition Specified Condition
        Battery positive terminal or EFI MAIN fuse (1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT BATTERY

    Note

    When disconnecting and reconnecting the cable to the negative (-) battery terminal, the cowl top ventilator louver must also be removed and installed. Be sure to install the cowl top ventilator louver properly. If it is not installed properly, water may enter the engine room and cause malfunctions.


    1. Check that the battery is not depleted.

      OK
      Battery is not depleted.

    OK

    CHECK AND REPLACE ENGINE ROOM NO. 2 RELAY BLOCK

    NG

    REPLACE BATTERY