Sfi System - P0560(2007/12 - 2009/01)

Brand:

Toyota

Model Name:

Camry ACV40 GSV40

Manual:

Repair Manual

Section:

2Az-Fe Engine Control System

Title:

Sfi System

  1. Description

  2. Wiring diagram

  3. Inspection procedure

  4. Check fuse (efi no. 1 fuse)

  5. Check harness and connector (ecm - efi no. 1 fuse, efi no. 1 fuse - battery)

  6. Inspect battery

  7. Check battery terminal

  8. Check whether dtc output recurs

DTC P0560 System Voltage


​

DESCRIPTION

The battery supplies electricity to the ECM even when the ignition 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 will illuminate the MIL and set the DTC.

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

WIRING DIAGRAM


Sfi System - P0103(2007/12 - 2009/01) Camry


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 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 FUSE (EFI NO. 1 FUSE)
  1. Remove the EFI No. 1 fuse from the engine room J/B. Camry

  2. Remove the EFI No. 1 fuse from the engine room J/B.

  1. Measure the resistance of the EFI No. 1 fuse.

    Standard resistance:
    Below 1 Ω

  1. Reinstall the EFI No. 1 fuse.



NGnext
REPLACE FUSE (EFI NO. 1 FUSE)
OK
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2.CHECK HARNESS AND CONNECTOR (ECM - EFI NO. 1 FUSE, EFI NO. 1 FUSE - BATTERY)
  1. Check the harness and the connector between the EFI No. 1 fuse and ECM.Remove the EFI No. 1 fuse from the engine room J/B.Disconnect the A24 ECM connector.Measure the resistance.Standard resistance (Check for open):Tester ConnectionSpecified ConditionEFI No. 1 fuse (2) - BATT (A24-20)Below 1 ΩStandard resistance (Check for short):Tester ConnectionSpecified ConditionEFI No. 1 fuse (2) or BATT (A24-20) - Body ground10 kΩ or higherReconnect the ECM connector.Reinstall the EFI No. 1 fuse. Camry

  2. Check the harness and the connector between the EFI No. 1 fuse and ECM.

    1. Remove the EFI No. 1 fuse from the engine room J/B.

    2. Disconnect the A24 ECM connector.

    3. Measure the resistance.

      Standard resistance (Check for open):
      Tester Connection
      		Specified Condition
      EFI No. 1 fuse (2) - BATT (A24-20)
      		Below 1 Ω
      Standard resistance (Check for short):
      Tester Connection
      		Specified Condition
      EFI No. 1 fuse (2) or BATT (A24-20) - Body ground
      		10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reinstall the EFI No. 1 fuse.

  1. Check the harness and the connector between the EFI No. 1 fuse and battery.

    1. Remove the EFI No. 1 fuse from the engine room J/B.

    2. Disconnect the negative battery terminal.

    3. Disconnect the positive battery terminal.

    4. Measure the resistance.

      Standard resistance (Check for open):
      Tester Connection
      		Specified Condition
      Battery positive terminal - EFI No. 1 fuse (1)
      		Below 1 Ω
      Standard resistance (Check for short):
      Tester Connection
      		Specified Condition
      Battery positive terminal or EFI No. 1 fuse (1) - Body ground
      		10 kΩ or higher

    5. Reconnect the positive battery terminal.

    6. Reconnect the negative battery terminal.

    7. Reinstall the EFI No. 1 fuse.



NGnext
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
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3.INSPECT BATTERY

  1. Check the battery voltage.

Standard voltage:
12.5 to 12.9 V at 20°C (68°F)


NGnext
REPLACE BATTERY
OK
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4.CHECK BATTERY TERMINAL

  1. Check that the battery terminals are not loose or corroded.

    OK:
    Battery terminals are not loose or corroded.


NGnext
REPAIR OR REPLACE BATTERY TERMINAL
OK
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5.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position and turn the tester on.

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch off and turn the tester off.

  1. Start the engine and turn the tester on.

  1. Select the following menu items: Powertrain / Engine and ECT/ DTC.

  1. Read the DTCs.

    Result:
    Display (DTC Output)
    		Proceed to
    P0560
    		A
    No output
    		B


Bnext
CHECK FOR INTERMITTENT PROBLEMS
A
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REPLACE ECM