Sfi System - P0560

Brand:

Toyota

Model Name:

4Runner GRN210 215 UZN210 215

Manual:

Repair Manual

Section:

2Uz-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. Read value of intelligent tester (battery voltage)

  8. Inspect fuse (efi no. 1)

  9. Check ecm (batt voltage)

  10. Check harness and connector (ecm - efi no. 1 fuse)

  11. Inspect battery

DTC P0560 System Voltage


​

MONITOR DESCRIPTION

The battery supplies electricity to the ECM even when the ignition switch is OFF. This electricity allows the ECM to store data such as DTC history, freeze frame data, fuel trim values, and other data. If the battery voltage falls below a minimum level, the memory is cleared and the ECM will conclude that there is a fault in the power supply circuit. At the next engine start, the ECM will illuminate the MIL and set a DTC.

DTC No.
DTC Detection Condition
Trouble Area
P0560
Open in ECM back-up power source circuit
  1. Open in back-up power source circuit
  2. EFI fuse
  3. ECM
HINT:
If DTC P0560 appears, the ECM does not store another DTC.

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 be illuminated after next engine start)
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


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

TYPICAL MALFUNCTION THRESHOLDS


ECM power source
Less than 3.5 V

WIRING DIAGRAM


Connect the intelligent tester to the DLC3 with CAN VIM. 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.READ VALUE OF INTELLIGENT TESTER (BATTERY VOLTAGE)

  1. Connect the intelligent tester to the DLC3 with CAN VIM.

  1. Turn the ignition switch ON.

  1. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / BATTERY VOLTAGE.

    Result:

    Battery voltage
    		Proceed to
    Battery voltage is 0 V
    		A
    Battery voltage is except 0 V
    		B


Bnext
Go to step 5
A
next down

2.INSPECT FUSE (EFI NO. 1)
  1. Remove the EFI fuse from the engine room relay block. 4Runner

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

  1. Measure the resistance of the fuse.

    Standard resistance:
    Below 1 Ω


NGnext
REPLACE FUSE
OK
next down

3.CHECK ECM (BATT VOLTAGE)
  1. Measure the voltage between terminals of the E6 and E8 ECM connector.Standard voltage:Tester ConnectionSpecified ConditionBATT (E6-3) - E1 (E8-1)9 to 14 V 4Runner

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

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


OKnext
CHECK FOR INTERMITTENT PROBLEMS
NG
next down

4.CHECK HARNESS AND CONNECTOR (ECM - EFI NO. 1 FUSE)
  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.Check the resistance between the wire harness side connectors.Standard resistance (Check for open):Tester ConnectionSpecified ConditionEngine room R/B (EFI fuse terminal 2) - BATT (E8-3)Below 1 ΩStandard resistance (Check for short):Tester ConnectionSpecified ConditionEngine room R/B (EFI fuse terminal 2) or BATT (E8-3) - Body ground10 kΩ or higherReinstall the EFI fuse.Reconnect the ECM connector. 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. Check the resistance between the wire harness side connectors.

      Standard resistance (Check for open):
      Tester Connection
      		Specified Condition
      Engine room R/B (EFI fuse terminal 2) - BATT (E8-3)
      		Below 1 Ω
      Standard resistance (Check for short):
      Tester Connection
      		Specified Condition
      Engine room R/B (EFI fuse terminal 2) or BATT (E8-3) - Body ground
      		10 kΩ or higher

    4. Reinstall the EFI fuse.

    5. Reconnect the ECM connector.

  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 cable.

    3. Check the resistance between the wire harness side connectors.

      Standard resistance (Check for open):
      Tester Connection
      		Specified Condition
      Positive battery cable - Engine room R/B (EFI fuse terminal 1)
      		Below 1 Ω
      Standard resistance (Check for short):
      Tester Connection
      		Specified Condition
      Positive battery cable or Engine room R/B (EFI fuse terminal 1) - Body ground
      		10 kΩ or higher

    4. Reinstall the EFI fuse.

    5. Reconnect the negative battery cable.



NGnext
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
next down

5.INSPECT BATTERY

  1. Check that the battery is not depleted.

    OK:
    Battery voltage is 11 V or more.


NGnext
REPLACE BATTERY
OK
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CHECK AND REPLACE ENGINE ROOM RELAY BLOCK