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 [10/2022 - ]: 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 [10/2022 - 08/2023]  , or Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2023 - 10/2024]  , or Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2024 - ] 

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.

   HINT: 

   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

1. Replace the engine oil.

   HINT: 

   • Refer to REPLACEMENT [10/2022 - ]
   • If the oil filter has exceeded the replacement period, replace the oil filter at the same time.

   Result

   Proceed to
   NEXT

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  12

Result: 

A 

See step  9

Pre-procedure1

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

  Powertrain > Engine > Data List 

  Tester Display
  Engine Oil Temperature Sensor

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

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  STANDARD
  
  

  Engine Speed	Engine Oil Temperature Sensor	Engine Oil Pressure
  1000 rpm	75 to 85 °C (167 to 185 °F)	110 to 210 kPa(gauge) [16 to 30 psi(gauge)]

  Result

  Result	Proceed to
  The value of Engine Oil Pressure is between 110 and 210 kPa	A
  None of the above conditions are met	B

  HINT: 

  110 to 210 kPa(gauge)=16 to 30 psi(gauge)

Post-procedure1

• None.

Result: 

B 

See step  12

Result: 

A 

See step  10

Pre-procedure1

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

  Powertrain > Engine > Data List 

  Tester Display
  Engine Oil Temperature Sensor

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

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  STANDARD
  
  

  Engine Speed	Engine Oil Temperature Sensor	Engine Oil Pressure
  2000 rpm	75 to 85 °C (167 to 185 °F)	150 to 300 kPa(gauge) [22 to 44 psi(gauge)]

  Result

  Result	Proceed to
  The value of Engine Oil Pressure is between 150 and 300 kPa	A
  None of the above conditions are met	B

  HINT: 

  150 to 300 kPa(gauge)=22 to 44 psi(gauge)

Post-procedure1

• None.

Result: 

B 

See step  12

Result: 

A 

See step  11

Pre-procedure1

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

  Powertrain > Engine > Data List 

  Tester Display
  Engine Oil Temperature Sensor

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

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  STANDARD
  
  

  Engine Speed	Engine Oil Temperature Sensor	Engine Oil Pressure
  3000 rpm	75 to 85 °C (167 to 185 °F)	200 to 380 kPa(gauge) [29 to 55 psi(gauge)]

  Result

  Result	Proceed to
  The value of Engine Oil Pressure is between 200 and 380 kPa	A
  None of the above conditions are met	B

  HINT: 

  200 to 380 kPa(gauge)=29 to 55 psi(gauge)

Post-procedure1

• None.

Result: 

A 

END 

Result: 

B 

See step  12

Pre-procedure1

• Remove the front fender apron seal RH.

  HINT: 

  Refer to PROCEDURE - Step 14

• 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

Post-procedure1

• None.

Result: 

NG 

See step  17

Result: 

OK 

See step  13

Pre-procedure1

• Disconnect the oil pressure control valve assembly connector.
• Start the engine and warm it up until the engine oil temperature is 75 to 85 °C (167 to 185 °F).

  Powertrain > Engine > Data List 

  Tester Display
  Engine Oil Temperature Sensor

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

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  STANDARD
  
  

  Engine Speed	Engine Oil Temperature Sensor	Engine Oil Pressure
  1000 rpm	75 to 85 °C (167 to 185 °F)	100 kPa(gauge) [15 psi(gauge)] or higher

  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  16

Result: 

A 

See step  14

Pre-procedure1

• Disconnect the oil pressure control valve assembly connector.
• Start the engine and warm it up until the engine oil temperature is 75 to 85 °C (167 to 185 °F).

  Powertrain > Engine > Data List 

  Tester Display
  Engine Oil Temperature Sensor

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

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  STANDARD
  
  

  Engine Speed	Engine Oil Temperature Sensor	Engine Oil Pressure
  2000 rpm	75 to 85 °C (167 to 185 °F)	200 kPa(gauge) [29 psi(gauge)] or higher

  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: 

B 

See step  16

Result: 

A 

See step  15

Pre-procedure1

• Disconnect the oil pressure control valve assembly connector.
• Start the engine and warm it up until the engine oil temperature is 75 to 85 °C (167 to 185 °F).

  Powertrain > Engine > Data List 

  Tester Display
  Engine Oil Temperature Sensor

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

  Powertrain > Engine > Data List 

  Tester Display
  Engine Speed
  Engine Oil Temperature Sensor
  Engine Oil Pressure

  STANDARD
  
  

  Engine Speed	Engine Oil Temperature Sensor	Engine Oil Pressure
  3000 rpm	75 to 85 °C (167 to 185 °F)	300 kPa(gauge) [44 psi(gauge)] or higher

  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 300 kPa or more	A
  None of the above conditions are met	B

  HINT: 

  300 kPa(gauge)=44 psi(gauge)

Post-procedure1

• None.

Result: 

A 

REPLACE OIL PRESSURE CONTROL VALVE ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

Result: 

B 

See step  16

Pre-procedure1

• Install the oil pressure gauge with adapter.
  WARNING:

  Removing the oil pressure sender gauge assembly while the engine is hot could result in burns caused by contact with hot engine oil.

  NOTE:

  Clean the hose and adapter of the oil pressure gauge before and after measurement.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

• Disconnect the oil pressure control valve assembly connector.
• 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
  1000 rpm	75 to 85 °C (167 to 185 °F)	100 kPa (1.0 kgf/cm2 , 15 psi) or higher
  2000 rpm		200 kPa (2.0 kgf/cm2 , 29 psi) or higher
  3000 rpm		300 kPa (3.1 kgf/cm2 , 44 psi) or higher

  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.

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None.

Result: 

OK 

REPLACE OIL PRESSURE SENSOR (OIL PRESSURE SENDER GAUGE ASSEMBLY). Refer to  REMOVAL [10/2022 - ] 

Result: 

NG 

REPLACE OIL PUMP ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

1. Inspect the oil pressure control valve assembly.

   Refer to INSPECTION [10/2022 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE OIL PRESSURE CONTROL VALVE ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

Result: 

OK 

See step  18

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
  B21-1 (OCV+) - B29-3 (VOP+)	Always	Below 1 Ω	Ω
  B21-2 (OCV-) - B29-4 (VOP-)	Always	Below 1 Ω	Ω
  B21-1 (OCV+) or B29-3 (VOP+) - Body ground and other terminals	Always	10 kΩ or higher	kΩ
  B21-2 (OCV-) or B29-4 (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 [10/2022 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR