SFI 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 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 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 or short in back-up power source circuit

  • Auxiliary battery

  • Auxiliary battery terminals

  • ECM

Tech Tips

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

MONITOR STRATEGY

Required Sensors/Components ECM
Frequency of Operation Continuous

TYPICAL MALFUNCTION THRESHOLDS

Stand-by RAM Initialized
Auxiliary battery voltage Less than 3.5 V

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) Click here.

  4. Turn the power switch off and wait for at least 30 seconds.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Wait 5 seconds or more.

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

  8. Read Pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  10. Input the DTC: P0560.

  11. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

WIRING DIAGRAM

A000NUAE03
*a P/I-B NO. 2
*b EFI MAIN
*c ENG R/B-B
*d Auxiliary Battery

CAUTION / NOTICE / HINT

Note

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

Tech Tips

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. INSPECT AUXILIARY BATTERY


    1. Check the auxiliary battery voltage.

      Auxiliary battery voltage
      11 to 14 V

    NG

    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. INSPECT ECM (BATT VOLTAGE)


    1. Disconnect the ECM connector.

    2. A000SAXE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A20-1 (BATT) - F5-49 (E1) Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - ECM)

    OK

  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0560)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Turn the power switch off and wait for at least 30 seconds.

    6. Turn the power switch on (IG) and turn the GTS on.

    7. Wait 5 seconds or more.

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

    9. Read the DTCs.

      Result
      Result Proceed to
      DTC P0560 is output A
      DTC is not output B

    A

    REPLACE ECM Click here

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here