DTC P0122: Inspection

TP Sensor A Inspection 

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

Test Procedure (Step 1) 

Unit output voltage inspection

• Preparation
  • Throttle body connector (6P): disconnected

• Procedure
  • Turn the vehicle to the ON mode.
  • Confirm the HDS [TP Sensor A].

• Normal Conditions
  • HDS [TP Sensor A] value is about 5.0 V. 

Test Procedure (Step 2) 

• Preparation
  • Throttle body connector (6P): disconnected
• Procedure
  • Perform the inspection according to the following chart.

			(Disconnected) Throttle body connector (6P) female terminals

		IG Mode	Courtesy of HONDA, U.S.A., INC.	Normal Conditions
	Unit output voltage inspection	ON		About 5.0 V

Results 

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

VCC3, THL1, SG3 Circuit Inspection 

NOTICE:  

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

Test Procedure 

• Preparation
  • Throttle body connector (6P): disconnected
  • PCM connector E (114P): disconnected
• Procedure
  • Perform the inspection according to the following chart.

			(Disconnected) Throttle body connector (6P) female terminals	(Disconnected) PCM connector E (114P) female terminals

		IG Mode	Courtesy of HONDA, U.S.A., INC.	Courtesy of HONDA, U.S.A., INC.	Normal Conditions
	VCC3 open wire inspection	OFF			There is less than 1 Ω
	VCC3, SG3 shorted wire to wire inspection	OFF			There is more than 1 MΩ
	THL1, SG3 shorted wire to wire inspection	OFF			There is more than 1 MΩ
	Refer to the Open/Shorted Wire Inspection Description for the method to inspect the shorted circuit below, then start to inspect according to circumstances.
	VCC3 shorted to ground inspection	OFF			There is more than 1 MΩ
	THL1 shorted to ground inspection	OFF			There is more than 1 MΩ

Results 

• If 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.