RM3660EC _51 Engine / Hybrid System _080777 NR Series ENGINE CONTROL _0393969 SFI SYSTEM C

NR Series ENGINE CONTROL  SFI SYSTEM  P15EA12  Oil Jet Control Valve Circuit Short to Battery  P15EA14  Oil Jet Control Valve Circuit Short to Ground or Open  


DESCRIPTION

The piston-cooling oil jet control system uses the oil pressure switching valve assembly to start and stop the operation of the oil jets.

When the oil pressure switching valve assembly operates, oil pressure from the oil pressure switching valve assembly closes the relief valve, which shuts off the oil path between the oil pump and oil jet and stops the operation of the oil jets. This reduces fuel dilution during low-temperature starting and improves the piston heating to reduce friction and suppress the generation of deposits. When the oil pressure switching valve assembly is inoperative, oil pressure from the oil pressure switching valve assembly is cut and the relief valve opens. This opens the oil path between the oil pump and oil jet and starts the oil jet to cool and lubricate the pistons.

A327843E03
0.188,0.104 3.25,0.302 3.063,0.198 10 false Piston-cooling oil jet control system 0.125,1.677 0.635,2.042 0.51,0.365 10 false Engine load 3.677,1.698 4.188,2.063 0.51,0.365 10 false Engine load 1.5,2.938 2.594,3.281 1.094,0.344 10 false Engine speed 5.031,2.927 6.125,3.271 1.094,0.344 10 false Engine speed 0.104,0.458 0.667,0.833 0.563,0.375 10 false Cold: 3.708,0.5 4.271,0.875 0.563,0.375 10 false Warm: 2,1.646 2.906,1.906 0.906,0.26 10 false Oil jet region 5.281,1.677 6.198,2.042 0.917,0.365 10 false Oil jet region 0.802,2.313 2.188,2.698 1.385,0.385 10 true Oil jet stopped region 4.281,2.365 5.635,2.719 1.354,0.354 10 true Oil jet stopped region

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P15EA12 Oil Jet Control Valve Circuit Short to Battery Short in oil pressure switching valve assembly circuit and power supply circuit (1 trip detection logic).
·

Short in oil pressure switching valve assembly circuit

·

Oil pressure switching valve assembly

·

ECM


Does not come on DTC stored SAE Code: P15EC
P15EA14 Oil Jet Control Valve Circuit Short to Ground or Open Open or short in oil pressure switching valve assembly circuit (1 trip detection logic).
·

Open or short in oil pressure switching valve assembly circuit

·

Oil pressure switching valve assembly

·

ECM


Does not come on DTC stored SAE Code: P15EB

MONITOR DESCRIPTION

The ECM monitors the output voltage of the oil pressure switching valve assembly while it is operating. If a continuous mismatch occurs between the ECM control value and the output voltage, the ECM determines there is a malfunction and stores a DTC.

CONFIRMATION DRIVING PATTERN

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

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

5.

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

6.

Start the engine.

7.

Turn the GTS on.

8.

Idle the engine for 30 seconds.

9.

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

10.

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.



11.

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

12.

Input the DTC: P15EA12 or P15EA14.

13.

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



HINT:
·

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

·

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




WIRING DIAGRAM

A378086E14
0.552,2.75 1.469,2.948 0.917,0.198 10 false Battery 0.458,2.125 1.302,2.354 0.844,0.229 10 false BATT-MAIN 0.542,0.75 1.188,1.198 0.646,0.448 10 false EFI-MAIN NO. 1 1.333,1.771 1.646,1.969 0.313,0.198 10 false 1B 1.354,1.938 3.167,2.229 1.813,0.292 10 false No.1 Integration Relay 1.292,0.49 1.448,0.688 0.156,0.198 10 false 3 1.302,0.979 1.458,1.177 0.156,0.198 10 false 5 2.615,0.979 2.771,1.177 0.156,0.198 10 false 6 2.615,0.49 2.771,0.688 0.156,0.198 10 false 4 2.854,0.75 3.594,1.01 0.74,0.26 10 false EFI NO. 2 3.875,0.49 4.031,0.688 0.156,0.198 10 false 2 5.177,0.49 5.333,0.688 0.156,0.198 10 false 1 3.906,0.917 4.365,1.115 0.458,0.198 10 false C83 3.906,1.083 5.333,1.594 1.427,0.51 10 false Oil Pressure Switching Valve Assembly 5.438,0.604 5.896,0.802 0.458,0.198 10 false C78 5.479,0.406 5.792,0.604 0.313,0.198 10 false 69 5.781,0.49 6.24,0.688 0.458,0.198 10 false EOJV 5.438,2.344 5.896,2.542 0.458,0.198 10 false A46 5.479,2.156 5.792,2.354 0.313,0.198 10 false 46 5.781,2.24 6.396,2.438 0.615,0.198 10 false MREL 6.188,3.083 6.833,3.385 0.646,0.302 10 false ECM 1.708,1.365 2.448,1.615 0.74,0.25 10 false EFI-MAIN 4.073,0.49 4.385,0.688 0.313,0.198 10 false +B 4.708,0.49 5.167,0.688 0.458,0.198 10 false EOJV

CAUTION / NOTICE / HINT

NOTICE:

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


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.CHECK ENGINE OIL LEVEL
a.

Check the engine oil level.

Click hereEngine / Hybrid System>NR Series (LUBRICATION)>LUBRICATION SYSTEM>ON-VEHICLE INSPECTION


b.

Check the state of the oil level warning.


Result:
Result Proceed to
Engine oil level is low and oil level warning is displayed A
Engine oil level is within the specified range and oil level warning is not displayed B


HINT:

If the oil level warning is not displayed even though the engine oil level is lower than the Low mark, or the oil level warning is displayed even though the engine oil level is within the specified range, inspect the oil level sensor and related parts.



A

2.INSPECT FOR ENGINE OIL LEAK

B

4.INSPECT OIL PRESSURE SWITCHING VALVE ASSEMBLY OPERATION
2.INSPECT FOR ENGINE OIL LEAK
a.

Check for engine oil leaks.

OK:

There are no engine oil leaks.


HINT:

If there are engine oil leaks, perform repairs.



Result:
Proceed to
NEXT



NEXT

3.ADD ENGINE OIL
3.ADD ENGINE OIL
a.

Add engine oil.

Click hereEngine / Hybrid System>NR Series (LUBRICATION)>OIL AND OIL FILTER>REPLACEMENT

NOTICE:

Do not add engine oil to above the full level mark.



Result:
Proceed to
NEXT



NEXT

4.INSPECT OIL PRESSURE SWITCHING VALVE ASSEMBLY OPERATION
4.INSPECT OIL PRESSURE SWITCHING VALVE ASSEMBLY OPERATION
a.

Connect the GTS to the DLC3.


b.

Start the engine.

HINT:

Make sure the engine coolant temperature is 70°C (158°F) or less.



c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Utility / Engine Oil Jet Control Check.

Powertrain > Engine > Utility
Tester Display
Engine Oil Jet Control Check
50005 372 4378

e.

According to the display on the GTS, read the Data List and calculate the difference between the values of "Valve OFF: Hi Oil press" and "Valve ON: Low Oil press".

OK:

30 kPa(gauge) or higher



Result:
Proceed to
OK
NG



OK

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


NG

5.INSPECT OIL PRESSURE SWITCHING VALVE ASSEMBLY
5.INSPECT OIL PRESSURE SWITCHING VALVE ASSEMBLY
a.

Inspect the oil pressure switching valve assembly.

Click hereEngine / Hybrid System>NR Series (LUBRICATION)>OIL PRESSURE SWITCHING VALVE>INSPECTION


Result:
Proceed to
OK
NG



OK

6.CHECK TERMINAL VOLTAGE (POWER SOURCE OF OIL PRESSURE SWITCHING VALVE ASSEMBLY)

NG

REPLACE OIL PRESSURE SWITCHING VALVE ASSEMBLY

Click hereEngine / Hybrid System>NR Series (LUBRICATION)>OIL PRESSURE SWITCHING VALVE>REMOVAL


6.CHECK TERMINAL VOLTAGE (POWER SOURCE OF OIL PRESSURE SWITCHING VALVE ASSEMBLY)
A399949C35
0.5,0.979 0.896,1.281 0.396,0.302 2.365,1.708 1.99,1.26 true 0.146,0.146 0.458,0.344 0.313,0.198 10 false *a 0.573,1.031 1.031,1.229 0.458,0.198 10 false C83 2.354,1.75 2.813,1.948 0.458,0.198 10 false +B
*a Front view of wire harness connector
(to Oil Pressure Switching Valve Assembly)


a.

Disconnect the oil pressure switching valve assembly connector.


b.

Turn the ignition switch to ON.


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
C83-2 (+B) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (OIL PRESSURE SWITCHING VALVE ASSEMBLY - ECM)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 INTEGRATION RELAY - OIL PRESSURE SWITCHING VALVE ASSEMBLY)

7.CHECK HARNESS AND CONNECTOR (OIL PRESSURE SWITCHING VALVE ASSEMBLY - ECM)
a.

Disconnect the oil pressure switching valve assembly connector.


b.

Disconnect the ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
C83-1 (EOJV) - C78-69 (EOJV) Always Below 1 Ω
C83-1 (EOJV) or C78-69 (EOJV) - Body ground and other terminals Always 10 kΩ or higher


Result:
Proceed to
OK
NG




OK

8.CLEAR DTC

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CLEAR DTC
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 > Clear DTCs
50002 372

e.

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


Result:
Proceed to
NEXT



NEXT

9.CHECK WHETHER DTC OUTPUT RECURS (DTC P15EA12 OR P15EA14)
9.CHECK WHETHER DTC OUTPUT RECURS (DTC P15EA12 OR P15EA14)
a.

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.


b.

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

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

c.

Input the DTC: P15EA12 or P15EA14.


d.

Check the DTC judgment result.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P15EA12 or P15EA14 is output) 		B




A

END

B

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL