DTC P0452: Inspection

FTP Sensor Inspection 

NOTE:  Since there is no direct method to test the component itself, troubleshooting is performed on the related components.

Test Procedure 

• Preparation
  • FTP sensor connector (3P): disconnected
• Procedure
  • Perform the inspection according to the following chart.

			(Disconnected) FTP sensor connector (3P) female terminals
		IG Mode	Courtesy of HONDA, U.S.A., INC.	Normal Conditions
	Unit output voltage inspection	ON		About 5.0 V
		ON		About 5.0 V

Results 

• If it is normal, there is a problem with the FTP sensor.
• If it is abnormal, there is a problem with other related components.

VCC6 [VCC], PTANK [VOUT] Circuit Inspection 

NOTICE:  

Before disconnecting the PCM connector, jump the SCS line with the HDS, and wait more than 1 minute.

Test Procedure 

• Preparation
  • FTP sensor connector (3P): disconnected
  • PCM connector B (72P): disconnected
• Procedure
  • Perform the inspection according to the following chart.

			(Disconnected) FTP sensor connector (3P) female terminals	(Disconnected) PCM connector B (72P) female terminals
		IG Mode	Courtesy of HONDA, U.S.A., INC.	Courtesy of HONDA, U.S.A., INC.	Normal Conditions
	VCC6 [VCC] open wire inspection	OFF			There is less than 1 Ω
	Refer to the Open/Shorted Wire Inspection Description for the method to inspect the shorted circuit below, then start to inspect according to circumstances.
	PTANK [VOUT] shorted to ground inspection	OFF			There is more than 1 MΩ

Results 

• If it is abnormal, there is a problem in the circuit.

PCM Inspection 

Test Procedure 

• If the other inspection item(s) indicated a normal condition, then it is determined that the remaining PCM is the cause.

Results 

• There is a problem with the PCM.