DTC    P0560    System Voltage

for Preparation Click here


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)
  1. Open in back-up power source circuit
  2. Battery
  3. Battery terminals
  4. EFI fuse
  5. ECM

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


WIRING DIAGRAM


A201215E05


INSPECTION PROCEDURE

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

HINT:
Read freeze frame data using an 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.

1.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - ECM)


    A201268E01

  1. Disconnect the ECM connector.

  1. Remove the integration relay from engine room relay block.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    1B-3 - A18-20 (BATT)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    1B-3 or A18-20 (BATT) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector:
    (to Integration Relay)
    *2
    		Front view of wire harness connector:
    (to ECM)

  1. Reconnect the ECM connector.

  1. Reinstall the integration relay.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BATTERY)


    A201293E01

  1. Remove the integration relay from engine room relay block.

  1. Disconnect the negative battery terminal.

  1. Disconnect the positive battery terminal.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    1A-1 - Battery positive terminal
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    1A-1 or Battery positive terminal - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector:
    (to Integration Relay)

  1. Reconnect the positive battery terminal.

  1. Reconnect the negative battery terminal.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT INTEGRATION NO.1 RELAY


    A201351E01

  1. Remove the integration relay from engine room relay block.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    1A-1 - 1B-3
    		Always
    		Below 1 Ω

    Text in Illustration 
    *1
    		Front view of wire harness connector:
    (to Integration Relay)

  1. Reinstall the integration relay.



NG
REPLACE INTEGRATION NO.1 RELAY (Click here)
OK


4.INSPECT BATTERY

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    Battery terminals
    		20°C (68°F)
    		12.5 to 12.9 V



NG
REPLACE BATTERY
OK


5.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


6.CHECK WHETHER DTC OUTPUT RECURS (DTC P0560)

  1. Connect an intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

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

  1. Clear DTCs.

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

  1. Start the engine and turn the tester on.

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

  1. Read DTCs.
    Result 
    Result
    		Proceed to
    P0560
    		A
    No output
    		B



B
CHECK FOR INTERMITTENT PROBLEMS (Click here)
A

REPLACE ECM (Click here)