DTC    P0560    System Voltage

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DESCRIPTION

The battery supplies power to terminal BATT of the ECM even when the ignition switch is OFF. This power allows the ECM to store DTC history, freeze frame data, fuel trim values, and other data.

DTC No.
DTC Detection Condition
Trouble Area
P0560
Open in backup power source circuit
  1. Open in back-up power source circuit
  2. ECM

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


WIRING DIAGRAM


A094237E06


INSPECTION PROCEDURE

HINT:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stopped, 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 FUSE (EFI)
G034719E02

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

  1. Measure the resistance of the fuse.

    Standard resistance:
    Below 1 Ω



NG
CHECK FOR SHORT IN ALL HARNESSES AND COMPONENTS CONNECTED TO FUSE
OK


2.CHECK ECM (BATT VOLTAGE)
A066060E60

  1. Measure the voltage of the ECM connectors.

    Standard voltage:
    Tester Connection
    		Specified Condition
    E9-3 (BATT) - E12-3 (E1)
    		9 to 14 V



OK
REPLACE ECM
NG


3.CHECK WIRE HARNESS (EFI FUSE - ECM AND BATTERY)
G038636E03

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

  1. Disconnect the E9 ECM connector.

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

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    J/B EFI fuse terminal 2 - E9-3 (BATT)
    		Below 1 Ω
    Positive (+) battery cable terminal - J/B EFI fuse terminal 1
    		Below 1 Ω
    J/B EFI fuse terminal 2 or E9-3 (BATT) - Body ground
    		10 kΩ or higher
    Positive (+) battery cable terminal or J/B EFI fuse terminal 1 - Body ground
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


4.INSPECT BATTERY

  1. Check that the battery is not depleted.

    OK:
    Battery is not depleted.



NG
REPLACE OR RECHARGE BATTERY
OK

CHECK AND REPLACE ENGINE ROOM RELAY BLOCK