DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK ECM TERMINAL VOLTAGE (BATT)
INSPECT BATTERY
CHECK BATTERY TERMINAL
CHECK WHETHER DTC OUTPUT RECURS
REPLACE ECM
REPAIR OR REPLACE HARNESS OR CONNECTOR
RECHARGE OR REPLACE BATTERY
REPAIR OR REPLACE BATTERY TERMINAL
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
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 ECM 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.
P0560| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Engine switch on (IG) for 3 seconds | The voltage at terminal BATT drops excessively for 3 seconds and part of the stored values in the ECM are initialized.
(1 trip detection logic) | Open in backup power source circuit (to BATT terminal)
Battery
Battery terminals
EFI MAIN fuse
ECM
|
Related Data List| DTC No. | Data List |
| P0560 | Battery Voltage* |
*: This is not the voltage at terminal BATT; it is the power supply voltage for the ECM.
- If DTC P0560 is stored, the ECM does not store other DTCs or the data stored in the ECM is partly cleared.
WIRING DIAGRAM
INSPECTION PROCEDURE
Inspect the fuses of circuits related to this system before performing the following inspection procedure.
After replacing the ECM, the new ECM needs registration () and initialization ().
After replacing the fuel supply pump assembly, the ECM needs initialization ().
After replacing an injector assembly, the ECM needs registration ().
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, and other data from the time the malfunction occurred.
When the engine switch is turned to on (IG), even though +B voltage is present, when the voltage at terminal BATT (power supply for maintaining memorized values in the ECM) drops excessively, this DTC is stored.
| 1.CHECK ECM TERMINAL VOLTAGE (BATT) |
Disconnect the ECM connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
for LHD| Tester Connection | Condition | Specified Condition |
| A38-20 (BATT) - Body ground | Always | 11 to 14 V |
- Standard Voltage:
for RHD| Tester Connection | Condition | Specified Condition |
| A52-20 (BATT) - Body ground | Always | 11 to 14 V |
Text in Illustration| *A | for LHD |
| *B | for RHD |
| *a | Front view of wire harness connector
(ECM) |
Reconnect the ECM connector.
Check that the battery is not depleted ().
- OK:
- Battery is not depleted.
Check that the battery terminals are not loose or corroded.
- OK:
- Battery terminals are not loose or corroded.
| 4.CHECK WHETHER DTC OUTPUT RECURS |
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Turn the engine switch off.
Turn the engine switch on (IG) for 3 seconds.
Enter the following menus: Engine and ECT / Trouble Codes.
Read the DTCs.
Result| Result | Proceed to |
| P0560 is output | A |
| No DTC is output | B |
| 6.REPAIR OR REPLACE HARNESS OR CONNECTOR |
Repair or replace the harness or connector.
| 7.RECHARGE OR REPLACE BATTERY |
Recharge or replace the battery.
| 8.REPAIR OR REPLACE BATTERY TERMINAL |
Repair or replace the battery terminal.
| 9.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
Connect the GTS to the DLC3.
Turn the engine switch off for 30 seconds or more.
Turn the engine switch on (IG) for 3 seconds.
Enter the following menus: Engine and ECT / Trouble Codes.
Confirm that the DTC is not output again.
