DTC P0524-77: Engine Oil Pressure Too Low (Severe); DTC P15F0-09: Engine Oil Pressure Too Low (Moderate); DTC P15F0-77: Engine Oil Pressure Too Low (Minor); DTC P15F1-09: Variable Oil Pump Component Failure; DTC P15F1-77: Variable Oil Pump Commanded Position Not Reachable [09/2023 - ]: Procedure

1. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   P0524-77, P15F0-09, P15F0-77, P15F1-09 or P15F1-77 and other DTCs are output	A
   P0524-77, P15F0-09, P15F0-77, P15F1-09 or P15F1-77 is output	B

   HINT: 

   If any DTCs other than P0524-77, P15F0-09, P15F0-77, P15F1-09 and/or P15F1-77 are output, troubleshoot those DTCs first.

Result: 

A 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2023 - ] 

Result: 

B 

See step  2

1. Check the engine oil level.

   HINT: 

   Refer to PROCEDURE - Step 1

2. Check the state of the oil level warning.

   Result

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

   HINT: 

   If the oil level warning is not displayed even though the engine oil level is below 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.

Result: 

B 

See step  5

Result: 

A 

See step  3

1. Check the engine oil quality.

   Refer to PROCEDURE - Step 2

2. Check that the engine oil is not contaminated with water, deteriorated, discolored or excessively thin.

   OK

   The engine oil is not contaminated with water, deteriorated, discolored or excessively thin.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

See step  7

Result: 

NG 

See step  4

HINT: 

Refer to REPLACEMENT [09/2023 - ]

If the oil filter has exceeded the replacement period, replace the oil filter at the same time.

Result

Result: 

NEXT 

See step  7

1. Check for engine oil leaks.

   OK

   There are no engine oil leaks.

   HINT: 

   If there are engine oil leaks, perform the following steps after repairing or replacing the malfunctioning parts.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Add engine oil.
   NOTE:

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

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

Pre-procedure1

• None

• Clear the DTCs.

  Powertrain > Engine > Clear DTCs 

  Result

  Proceed to
  NEXT

Post-procedure1

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

Result: 

NEXT 

See step  8

Pre-procedure1

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

• Read the DTCs.

  Powertrain > Engine > Trouble Codes 

  Result

  Result	Proceed to
  DTCs are not output	A
  P0524-77, P15F0-09, P15F0-77, P15F1-09 or P15F1-77 is output	B

Post-procedure1

• None

Result: 

B 

See step  11

Result: 

A 

See step  9

Pre-procedure1

• Put the engine in Inspection Mode (for measuring Exhaust Gas).

  Powertrain > Hybrid Control > Utility 

  Tester Display
  Inspection Mode

• Start the engine and warm it up until the engine oil temperature is 75 to 85 °C (167 to 185 °F).

• According to the display on the GTS, read the Data List with the engine speed at 1500 rpm.

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  Result

  Result	Proceed to
  The value of Engine Oil Pressure is 80 kPa or more	A
  None of the above conditions are met	B

  HINT: 

  80 kPa (gauge) = 12 psi (gauge)

Post-procedure1

• None

Result: 

B 

See step  11

Result: 

A 

See step  10

Pre-procedure1

• Put the engine in Inspection Mode (for measuring Exhaust Gas).

  Powertrain > Hybrid Control > Utility 

  Tester Display
  Inspection Mode

• Start the engine and warm it up until the engine oil temperature is 75 to 85 °C (167 to 185 °F).

• According to the display on the GTS, read the Data List with the engine speed at 2500 rpm.

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  Result

  Result	Proceed to
  The value of Engine Oil Pressure is 80 kPa or more	A
  None of the above conditions are met	B

  HINT: 

  80 kPa (gauge) = 12 psi (gauge)

Post-procedure1

• None

Result: 

A 

END 

Result: 

B 

See step  11

1. Set the Active Test item "Activate the Engine Oil Pressure Control Valve" to 900.00 mA and confirm that the oil pressure control valve assembly makes an operation sound when the oil pressure control valve assembly connector is disconnected and reconnected.

   Powertrain > Engine > Active Test 

   Tester Display
   Activate the Engine Oil Pressure Control Valve

   OK

   An operation sound can be heard

   HINT: 

   • Be sure to clear the DTCs after performing the inspection as DTCs may be stored when the oil pressure control valve assembly connector disconnected.
   • As the maximum operating current of the oil pressure control valve is 1000 mA, it is necessary to operate the oil pressure control valve within this range when setting the Active Test item "Activate the Engine Oil Pressure Control Valve" (If the Active Test request value exceeds 1000 mA, the Active Test will be suspended).
   • If the Active Test value exceeds 1000 mA, reselect the value as the Active Test will be suspended.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  15

Result: 

OK 

See step  12

Pre-procedure1

• Disconnect the oil pressure control valve assembly connector.
• Put the engine in Inspection Mode (for measuring Exhaust Gas).

  Powertrain > Hybrid Control > Utility 

  Tester Display
  Inspection Mode

• Start the engine and warm it up until the engine oil temperature is 75 to 85 °C (167 to 185 °F).

• According to the display on the GTS, read the Data List with the engine speed at 1500 rpm.

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  HINT: 

  • By disconnecting the oil pressure control valve assembly connector, the non-regulated oil pressure can be measured.
  • Be sure to clear the DTCs after performing the inspection as DTCs may be stored when the oil pressure control valve assembly connector disconnected.

  Result

  Result	Proceed to
  The value of Engine Oil Pressure is 100 kPa or more	A
  None of the above conditions are met	B

  HINT: 

  100 kPa (gauge) = 15 psi (gauge)

Post-procedure1

• None

Result: 

B 

See step  14

Result: 

A 

See step  13

Pre-procedure1

• Disconnect the oil pressure control valve assembly connector.
• Put the engine in Inspection Mode (for measuring Exhaust Gas).

  Powertrain > Hybrid Control > Utility 

  Tester Display
  Inspection Mode

• Start the engine and warm it up until the engine oil temperature is 75 to 85 °C (167 to 185 °F).

• According to the display on the GTS, read the Data List with the engine speed at 2500 rpm.

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  HINT: 

  • By disconnecting the oil pressure control valve assembly connector, the non-regulated oil pressure can be measured.
  • Be sure to clear the DTCs after performing the inspection as DTCs may be stored when the oil pressure control valve assembly connector disconnected.

  Result

  Result	Proceed to
  The value of Engine Oil Pressure is 200 kPa or more	A
  None of the above conditions are met	B

  HINT: 

  200 kPa (gauge) = 29 psi (gauge)

Post-procedure1

• None

Result: 

A 

REPLACE OIL PRESSURE CONTROL VALVE ASSEMBLY. Refer to  REMOVAL [09/2023 - ] 

Result: 

B 

See step  14

HINT: 

Be sure to clear the DTCs after reinstalling the oil pressure sensor (oil pressure sender gauge assembly) or reconnecting the oil pressure sensor (oil pressure sender gauge assembly) or oil pressure control valve assembly connector, as DTCs may be stored.

Pre-procedure1

• Install the oil pressure gauge with adapter.

  HINT: 

  Refer to REMOVAL [09/2023 - ]

• Disconnect the oil pressure control valve assembly connector.
• Put the engine in Inspection Mode (for measuring Exhaust Gas).

  Powertrain > Hybrid Control > Utility 

  Tester Display
  Inspection Mode

• Start the engine and warm it up until the engine oil temperature is 75 to 85 °C (167 to 185 °F).

• According to the display on the GTS, read the Data List.

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor

  STANDARD
  
  

  Engine Speed	Engine Oil Temperature Sensor	Engine Oil Pressure Gauge Value
  1500 rpm	75 to 85 °C (167 to 185 °F)	100 kPa (1.0 kgf/cm2 , 15 psi) or higher
  2500 rpm		200 kPa (2.0 kgf/cm2 , 29 psi) or higher

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE OIL PRESSURE SENSOR (OIL PRESSURE SENDER GAUGE ASSEMBLY). Refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

REPLACE OIL PUMP ASSEMBLY. Refer to  REMOVAL [09/2023 - ] 

Refer to INSPECTION [09/2023 - ]

Result

Result: 

NG 

REPLACE OIL PRESSURE CONTROL VALVE ASSEMBLY. Refer to  REMOVAL [09/2023 - ] 

Result: 

OK 

See step  16

Pre-procedure1

• Disconnect the oil pressure control valve assembly connector.
• Disconnect the ECM connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C20-1 (OCV+) - C27-3 (VOP+)	Always	Below 1 Ω	Ω
  C20-2 (OCV-) - C27-4 (VOP-)	Always	Below 1 Ω	Ω
  C20-1 (OCV+) or C27-3 (VOP+) - Body ground and other terminals	Always	10 kΩ or higher	kΩ
  C20-2 (OCV-) or C27-4 (VOP-) - Body ground and other terminals	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR