2NZ-FE ENGINE CONTROL SFI SYSTEM P0560 System Voltage | Toyota Corolla/Altis NZE17/ZRE17 2017 Service Manual

MONITOR 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 store this DTC.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0560	System Voltage	An open in the ECM back up power source circuit (1 trip detection logic).	· Open in back up power source circuit · Battery · Battery terminals · ECM	Comes on	DTC stored

HINT:: If DTC P0560 is stored, the ECM does not store other DTCs or the data stored in the ECM is partially cleared.

MONITOR STRATEGY

Required Sensors/Components	ECM
Frequency of Operation	Continuous

TYPICAL MALFUNCTION THRESHOLDS

Both of the following conditions are met	-
Stand-by RAM	Initialized
Continuous battery voltage	Less than 3.5 V

CONFIRMATION DRIVING PATTERN

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the ignition switch off and wait for at least 30 seconds.

5.

Turn the ignition switch to ON and turn the GTS on.

6.

Wait 5 seconds or more.

7.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

8.

Read the pending DTCs.

HINT:: ·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.

9.

Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

10.

Input the DTC: P0560.

11.

Check the DTC judgment result.

GTS Display	Description
NORMAL	· DTC judgment completed · System normal
ABNORMAL	· DTC judgment completed · System abnormal
INCOMPLETE	· DTC judgment not completed · Perform driving pattern after confirming DTC enabling conditions
N/A	· Unable to perform DTC judgment · Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

HINT:: ·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

5.594,1.125 6.208,1.323 0.615,0.198 10 false BATT 5.594,2.344 6.208,2.542 0.615,0.198 10 false E1 5.24,2.354 5.854,2.552 0.615,0.198 10 false B56 5.24,1.115 5.854,1.313 0.615,0.198 10 false A56 5.271,0.948 5.885,1.146 0.615,0.198 10 false 20 5.25,2.177 5.865,2.375 0.615,0.198 10 false 104 3.365,1.281 4.354,1.635 0.99,0.354 10 false ECU-B NO. 3 1.823,1.271 2.813,1.625 0.99,0.354 10 false FL MAIN 1.156,2.323 2.146,2.677 0.99,0.354 10 false Battery 5.875,3.25 6.49,3.448 0.615,0.198 10 false ECM

CAUTION / NOTICE / HINT

NOTICE:: ·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>PRECAUTION

HINT:: Read freeze frame data using the GTS. 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.

PROCEDURE

1.INSPECT BATTERY

a.

Inspect the battery.

Click herePower Source / Network>2NZ-FE BATTERY / CHARGING>CHARGING SYSTEM>ON-VEHICLE INSPECTION

Result:

Proceed to
OK
NG

OK

2.CHECK BATTERY TERMINAL

NG

CHARGE OR REPLACE BATTERY

2.CHECK BATTERY TERMINAL

a.

Check that the battery terminals are not loose or corroded.

OK:: Battery terminals are not loose or corroded.

Result:

Proceed to
OK
NG

OK

3.CHECK TERMINAL VOLTAGE (POWER SOURCE OF ECM)

NG

REPAIR OR REPLACE BATTERY TERMINAL

3.CHECK TERMINAL VOLTAGE (POWER SOURCE OF ECM)

0.188,1.969 0.531,2.188 0.344,0.219 1.5,2.083 1.313,2.958 false 0.219,0.198 0.385,0.375 0.167,0.177 10 false *a 0.24,1.99 0.646,2.292 0.406,0.302 10 false A56 1.146,3.021 1.646,3.24 0.5,0.219 10 false BATT

*a	Front view of wire harness connector (to ECM)

a.

Disconnect the ECM connector.

b.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
A56-20 (BATT) - Body ground	Always	11 to 14 V

Result:

Proceed to
OK
NG

OK

4.CHECK WHETHER DTC OUTPUT RECURS (DTC P0560)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - ECM)

4.CHECK WHETHER DTC OUTPUT RECURS (DTC P0560)

a.

Connect the GTS to the DLC3.

b.

Turn the ignition switch to ON.

c.

Turn the GTS on.

d.

Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs: 50002 234

e.

Turn the ignition switch off and wait for at least 30 seconds.

f.

Turn the ignition switch to ON and turn the GTS on.

g.

Wait 5 seconds or more.

h.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

i.

Read the DTCs.

Powertrain > Engine and ECT > Trouble Codes: 50001 234

Result:

Result	Proceed to
DTC P0560 is output	A
DTCs are not output	B

A

REPLACE ECM

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>ECM>REMOVAL

B

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS