Dtc P0560 System Voltage


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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

INSPECT BATTERY

CHECK BATTERY TERMINAL

CHECK WHETHER DTC OUTPUT RECURS

DTC 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 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 illuminates the MIL and stores the DTC.

DTC No.
DTC Detection Condition
Trouble Area
P0560
An open in the ECM backup power source circuit (1 trip detection logic).
  1. Open in backup power source circuit
  2. Battery
  3. Battery terminals
  4. EFI fuse
  5. ECM
HINT:
If DTC P0560 is stored, the ECM does not store other DTCs or the data stored in the ECM is partly cleared.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System. Dtc P0560 System Voltage


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Read freeze frame data using the GTS. 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.
1.CHECK HARNESS AND CONNECTOR (ECM - EFI FUSE, EFI FUSE - BATTERY)

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

    1. Remove the EFI 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 fuse terminal 2 - G55-24 (BATT)
      		Always
      		Below 1 Ω
      Standard Resistance (Check for Short):
      Tester Connection
      		Condition
      		Specified Condition
      EFI fuse terminal 2 or G55-24 (BATT) - Body ground
      		Always
      		10 kΩ or higher

    4. Reinstall the EFI fuse.

    5. Reconnect the ECM connector.

  1. Check the harness and connector between the EFI fuse and battery.

    1. Remove the EFI fuse from the engine room relay block.

    2. Disconnect the cable from the positive (+) battery terminal.

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

    4. Reinstall the EFI fuse.

    5. Reconnect the cable to the positive (+) battery terminal.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT BATTERY

  1. Check that the battery is not depleted.

    OK:
    Battery is not depleted.


NG
REPLACE BATTERY
OK


3.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


4.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG) and turn the GTS on.

  1. Clear the DTCs (LandCruiser RM000000PDK1DIX.html).

  1. Turn the engine switch off and turn the GTS off.

  1. Start the engine and turn the GTS on.

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

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    P0560
    		A
    No output
    		B


B
CHECK FOR INTERMITTENT PROBLEMS (LandCruiser RM000000PDQ18TX.html)
A

REPLACE ECM (LandCruiser RM00000329203TX.html)