DTC Troubleshooting: P0141 (2.0L Engine): Inspection

Secondary HO2S (Sensor 2) Component Inspection

Test Procedure


		(Disconnected)Secondary HO2S (Sensor 2) 4P connectormale terminals
	IG Mode	Courtesy of HONDA, U.S.A., INC.	Normal Conditions
Sensor internal circuit inspection	OFF		About 4.2 - 6.6 Ohm (at room temperature)
	OFF*1		Not shorted
	OFF*1		Not shorted

*1: Secondary HO2S (Sensor 2) is installed

Results

IG1(SO2), SO2HT Circuit Inspection

NOTICE:

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

Test Procedure

Preparation
- -
  Secondary HO2S (Sensor 2) 4P connector: disconnected
- -
  PCM connector A (50P): disconnected
Procedure
- -
  Perform the inspection according to the following table.


		(Disconnected)Secondary HO2S (Sensor 2) 4P connectorfemale terminals	(Disconnected) PCM connector A (50P) - 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
IG1(SO2) circuit inspection	ON			12 V battery voltage [circuit type 1]
SO2HT open wire inspection	OFF			There is less than 1 Ohm
NOTE: Refer to the Open/Shorted Wire Inspection Description for the method to inspect the shorted circuit below, then start to inspect according to circumstances.
SO2HT shorted to ground inspection	OFF			Not shorted

Results

If abnormal, there is a problem in the circuit.
NOTE: If the power supply inspection of the above table showed abnormally, do the additional Power Supply Inspection , to locate the failure.

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