DTC Troubleshooting: P2237 (2.0L Engine): Inspection

IP 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
- A/F sensor (Sensor 1) 6P connector: disconnected
- PCM connector E (80P): disconnected

Procedure
- Perform the inspection according to the following table.


		(Disconnected)A/F sensor (Sensor 1) 6P connectorfemale terminals	(Disconnected) PCM connector E (80P) - 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
IP open wire inspection	OFF			There is less than 1 Ohm

Results

If abnormal, there is a problem in the circuit.

PCM Inspection

Preconditions

NOTE: This procedure can be done before any other inspections are completed because this test procedure includes all of the following inspection items. However, if this test fails, it will be necessary to continue with each inspection item individually to determine which item failed.

External circuit is normal

Test Procedure

Preparation
- A/F sensor (Sensor 1) 6P connector: disconnected

Procedure
- Perform the confirmation procedure.
- Perform the inspection according to the following table.


		(Disconnected)A/F sensor (Sensor 1) 6P connectorfemale terminals
	IG Mode	Courtesy of HONDA, U.S.A., INC.	Normal Conditions
Unit output voltage inspection	ON*1		About 0.2 V or more

*1: Engine running

Results

If it is abnormal, there is a problem with the PCM.

A/F Sensor (Sensor 1) Inspection

Test Procedure

If the other inspection item (s) indicated a normal condition, then it is determined that the remaining A/F sensor (Sensor 1) is the cause.

Results

There is a problem with the A/F sensor (Sensor 1).