DTC P051A-15: Crankcase Pressure Sensor "A" Circuit High Circuit Short to Battery or Open [10/2022 - ]: Procedure

HINT: 

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

Pre-procedure1

• Disconnect the vacuum sensor assembly connector.
• Turn the ignition switch to ON.

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

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  B45-3 (VC) - B45-1 (E2)	Ignition switch ON	4.5 to 5.5 V	V
  B45-2 (PPC1) - B45-1 (E2)	Ignition switch ON	3.0 to 5.5 V	V

Pre-procedure2

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

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  B45-3 (VC) - B45-2 (PPC1)	Ignition switch off	171 to 189 kΩ	kΩ
  B45-1 (E2) - Body ground	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None.

Result: 

OK 

REPLACE VACUUM SENSOR ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

Result: 

NG 

See step  2

Pre-procedure1

• Disconnect the vacuum sensor 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
  B45-2 (PPC1) - B27-66 (PPC1)	Always	Below 1 Ω	Ω
  B45-1 (E2) - B27-64 (EIPC)	Always	Below 1 Ω	Ω
  B45-2 (PPC1) or B27-66 (PPC1) - 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