DTC Troubleshooting: P2176 (3.0L Engine): Inspection

Throttle Body Visual Inspection 

Test Procedure 

• Procedure
• • Check for sludge or carbon on the throttle valve.

• Normal Conditions
• • There is no sludge or carbon on the throttle valve

    .

Results 

• If it is abnormal, clean the throttle body - Refer to: Throttle Body Carbon Accumulation Check or Throttle Body Cleaning .

Throttle Body Inspection 

Test Procedure 

• Install a known-good throttle body and attempt to reproduce the failure.

Results 

• If the failure is reproduced, there is a problem with other related components.
• If the symptom/DTC goes away, the throttle body must be faulty.

MTR1, MTR2 Open Wire 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 6P connector: disconnected
  • PCM connector E (114P): disconnected
• Procedure
• • Perform the inspection according to the following table.

			(Disconnected)Throttle body 6P connectorfemale terminals	(Disconnected) PCM connector E (114P) - Refer to: PCM Connector for Inputs and Outputs (3.0L Engine) or PCM Connector for Inputs and Outputs (2.0L Engine) female terminals
		IG Mode	Courtesy of HONDA, U.S.A., INC.	Courtesy of HONDA, U.S.A., INC.	Normal Conditions
	MTR1 open wire inspection	OFF			There is less than 1 Ohm
	MTR2 open wire inspection	OFF			There is less than 1 Ohm

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.