A/C Signal Circuit Troubleshooting (3.0L Engine): Inspection

A/C_MG_CLUTCH_RLY_CL- 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
• • PCM connector B (72P): disconnected
  • Power distribution module connector A (18P): disconnected
• Procedure
• • Perform the inspection according to the following table.

			(Disconnected)Power distribution module connector A (18P) female 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
	A/C_MG_CLUTCH_RLY_CL- open wire inspection	OFF			There is less than 1 Ohm

Results 

• If abnormal, there is a problem in the circuit.

PCM Inspection 

NOTICE: 

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

Preconditions 

• A/C Compressor Clutch Check is normal

Test Procedure 

A/C clutch drive inspection

• Preparation
• • PCM connector B (72P): disconnected

• Procedure
• • Jump the PCM connector B (72P) terminal No. 24 and body ground with a jumper wire.
  • Turn the vehicle to the ON mode.

	(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
	Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
• • There is a clicking noise from the A/C compressor clutch.

Results 

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

Power Distribution Module Inspection 

Test Procedure 

• If the other inspection item(s) indicated a normal condition, then it is determined that the remaining power distribution module is the cause.

Results 

• There is a problem with the power distribution module.