Brand:

Toyota

Model Name:

4Runner GRN210 215 UZN210 215

Manual:

Repair Manual

Section:

1Gr-Fe Engine Control System

Title:

Sfi System

  1. Monitor description

  2. Monitor strategy

  3. Typical enabling conditions

  4. Typical malfunction thresholds

  5. Wiring diagram

  6. Inspection procedure

  7. Check fuse (efi fuse)

  8. Inspect ecm (batt voltage)

  9. Check harness and connector (ecm - efi fuse, efi fuse - battery)

  10. Inspect battery

DTC P0560 System Voltage


​

MONITOR DESCRIPTION

The battery supplies electricity to the ECM even when the ignition switch is in the off position. 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, these memories are 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 sets the DTC.

DTC No.
DTC Detection Conditions
Trouble Areas
P0560
Open in ECM back up power source circuit (1 trip detection logic)
  1. Open in back up power source circuit
  2. EFI fuse
  3. ECM
HINT:
If DTC P0560 is set, the ECM does not store other DTCs.

MONITOR STRATEGY


Related DTCs
P0560: ECM system voltage
Required Sensors / Components (Main)
ECM
Required Sensors / Components (Related)
-
Frequency of Operation
Continuous
Duration
3 seconds
MIL Operation
Immediate (MIL will illuminate after next engine start)
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


The monitor will run whenever these DTCs are not present
None
Stand-by RAM
Initialized

TYPICAL MALFUNCTION THRESHOLDS


Battery voltage
Less than 3.5 V

WIRING DIAGRAM


Sfi System - P0117 4Runner


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 FUSE (EFI FUSE)
  1. Remove the EFI fuse from the engine room R/B and J/B. 4Runner

  2. Remove the EFI fuse from the engine room R/B and J/B.

  1. Measure the resistance.

    Standard resistance:
    Below 1 Ω

  1. Reinstall the EFI fuse.



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CHECK FOR SHORT IN ALL HARNESS AND COMPONENTS CONNECTED TO FUSE, AND REPLACE FUSE
OK
next down

2.INSPECT ECM (BATT VOLTAGE)
  1. Measure the voltage between the terminals of the E6 and E8 ECM connectors.Standard voltage:Tester ConnectionsSpecified ConditionsBATT (E8-3) - E1 (E6-1)9 to 14 V 4Runner

  2. Measure the voltage between the terminals of the E6 and E8 ECM connectors.

    Standard voltage:
    Tester Connections
    		Specified Conditions
    BATT (E8-3) - E1 (E6-1)
    		9 to 14 V


NGnext
Go to step 3
OK
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REPLACE ECM

3.CHECK HARNESS AND CONNECTOR (ECM - EFI FUSE, EFI FUSE - BATTERY)
  1. Check the harness and the connector between the EFI fuse and ECM.Remove the EFI fuse from the engine room R/B.Disconnect the E8 ECM connector.Measure the resistance.Standard resistance (Check for open):Tester ConnectionsSpecified ConditionsEFI fuse (2) - BATT (E8-3)Below 1 ΩStandard resistance (Check for short):Tester ConnectionsSpecified ConditionsEFI fuse (2) or BATT (E8-3) - Body ground10 kΩ or higherReconnect the ECM connector.Reinstall the EFI fuse. 4Runner

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

    1. Remove the EFI fuse from the engine room R/B.

    2. Disconnect the E8 ECM connector.

    3. Measure the resistance.

      Standard resistance (Check for open):
      Tester Connections
      		Specified Conditions
      EFI fuse (2) - BATT (E8-3)
      		Below 1 Ω
      Standard resistance (Check for short):
      Tester Connections
      		Specified Conditions
      EFI fuse (2) or BATT (E8-3) - Body ground
      		10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reinstall the EFI fuse.

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

    1. Remove the EFI fuse from the engine room R/B.

    2. Disconnect the negative battery terminal.

    3. Measure the resistance.

      Standard resistance (Check for open):
      Tester Connections
      		Specified Conditions
      Battery positive terminal - EFI fuse (1)
      		Below 1 Ω
      Standard resistance (Check for short):
      Tester Connections
      		Specified Conditions
      Battery positive terminal or EFI fuse (1) - Body ground
      		10 kΩ or higher

    4. Reconnect the negative battery cable.

    5. Reinstall the EFI No. 1 fuse.



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REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
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4.INSPECT BATTERY

  1. Check that the battery is not depleted.



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REPLACE BATTERY
OK
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CHECK AND REPLACE ENGINE ROOM RELAY BLOCK