DTC    P0560    System Voltage

for Preparation Click here


MONITOR 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 memory is cleared and the ECM determines that there is a malfunction in the power supply circuit. The next time the engine is 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).
  1. Open in back up power source circuit
  2. Auxiliary battery
  3. Auxiliary battery terminals
  4. EFI MAIN fuse
  5. ECM

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


MONITOR STRATEGY


Required Sensors/Components (Main)
ECM
Frequency of Operation
Continuous

TYPICAL MALFUNCTION THRESHOLDS


Stand-by RAM
Initialized
ECM power source
Less than 3.5 V

CONFIRMATION DRIVING PATTERN

  1. Turn the power switch on (IG) and wait for 5 seconds or more.

WIRING DIAGRAM


A157717E26


INSPECTION PROCEDURE

NOTICE:
  1. After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work (Click here).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:
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.

1.CHECK HARNESS AND CONNECTOR (ECM - AUXILIARY BATTERY)

  1. Disconnect the negative (-) auxiliary battery terminal.

  1. Disconnect the positive (+) auxiliary battery terminal.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    Positive (+) auxiliary battery terminal - A60-20 (BATT)
    		Always
    		Below 1 Ω
    Positive (+) auxiliary battery terminal or A60-20 (BATT) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT AUXILIARY BATTERY

  1. Check that the auxiliary battery is not discharged or weak.

    OK:
    Auxiliary battery is not discharged or weak.



NG
CHARGE OR REPLACE AUXILIARY BATTERY
OK


3.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


4.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Turn the tester on.

  1. Clear the DTCs (Click here).

  1. Turn the power switch off and turn the tester off.

  1. Turn the power switch on (IG) and turn the tester on.

  1. Wait for 5 seconds or more.

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

  1. 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)