DTC P0560 2ZR-FXE

DTC P0560 System Voltage

  1. Monitor description

  2. Monitor strategy

  3. Typical malfunction thresholds

  4. Confirmation driving pattern

  5. Wiring diagram

  6. Inspection procedure

  7. Check harness and connector (ecm - auxiliary battery)

  8. Inspect auxiliary battery

  9. Check auxiliary battery terminal

  10. Check whether dtc output recurs

Monitor description

The auxiliary battery supplies electricity to the ECM even when the power switch is off. This power allows the ECM to store data such as DTC history, freeze frame data and fuel trim values. If the auxiliary 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. The next time the engine is started, the ECM illuminates the MIL and sets 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. Auxiliary battery
  3. Auxiliary battery terminals
  4. EFI MAIN fuse
  5. ECM

HINT:

If DTC P0560 is set, the ECM does not store other DTCs or the data stored in the ECM may be partly cleared.

Monitor strategy

Required Sensors/Components (Main) ECM
Frequency of Operation Continuous

Typical malfunction thresholds

Stand-by RAM Initialized
ECM power source Less than 3.5 V

Confirmation driving pattern

  1. Turn the power switch on (IG) and wait for 5 seconds or more.

Wiring diagram

Lexus DTC P0560 Wiring diagram

Inspection procedure

NOTICE:

  1. After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work .
  2. Inspect the fuses for circuits related to this system before performing the following 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 HARNESS AND CONNECTOR (ECM - AUXILIARY BATTERY)

  1. Disconnect the negative (-) auxiliary battery terminal.

  1. Disconnect the positive (+) auxiliary battery terminal.

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:

    Tester Connection Condition Specified Condition
    Positive (+) auxiliary battery terminal - A60-20 (BATT) Always Below 1 ?
    Positive (+) auxiliary battery terminal or A60-20 (BATT) - Body ground Always 10 k? or higher
  NG  
REPAIR OR REPLACE HARNESS OR CONNECTOR
 
OK  
   

2.INSPECT AUXILIARY BATTERY

  1. Check that the auxiliary battery is not discharged or weak.

    OK:

    Auxiliary battery is not discharged or weak.

  NG  
CHARGE OR REPLACE AUXILIARY BATTERY
 
OK  
   

3.CHECK AUXILIARY BATTERY TERMINAL

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

    OK:

    Auxiliary battery terminals are not loose or corroded.

  NG  
REPAIR OR REPLACE AUXILIARY BATTERY TERMINAL
 
OK  
   

4.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Turn the tester on.

  1. Clear the DTCs .

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

  1. Turn the power switch on (IG) and turn the tester on.

  1. Wait for 5 seconds or more.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

    Result
    Result Proceed to
    DTC P0560 is output A
    DTC is not output B
  B  
CHECK FOR INTERMITTENT PROBLEMS
 
A  
   
REPLACE ECM