DTC Troubleshooting: P0571(3.0L Engine): Inspection

Brake Pedal Position Switch Installation Inspection

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

Test Procedure

Brake pedal position switch functional inspection

Results

If it is normal, there is a problem in the brake pedal position switch installation.
If it is abnormal, there is a problem with other related components.

+B_STOP Circuit Inspection

Test Procedure


		(Disconnected)Brake pedal position switch 4P connectorfemale terminals
	IG Mode	Courtesy of HONDA, U.S.A., INC.	Normal Conditions
+B_STOP circuit inspection	OFF		12 V battery voltage [circuit type 1]

Results

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

STOP_SW Circuit Inspection

NOTICE:

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

Test Procedure

Preparation
- Brake pedal position switch 4P connector: disconnected
- PCM connector B (72P): disconnected
- Brake light relay: disconnected
- Body control module connector C (28P): disconnected
Procedure
- Perform the inspection according to the following table.


		(Disconnected)Brake pedal position switch 4P connectorfemale terminals	(Disconnected) PCM connector B (72P) - 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
STOP_SW open wire inspection	OFF			There is less than 1 Ohm
Refer to the Open/Shorted Wire Inspection Description for the method to inspect the shorted circuit below, then start to inspect according to circumstances.
STOP_SW shorted to power inspection	ON			Not shorted

Results

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