Nissan Versa (N17): P0974 Shift solenoid A

DTC Logic

DTC DETECTION LOGIC

DTC	Trouble diagnosis name	DTC detection condition	Possible causes
P0974	Shift Solenoid "A" Control Circuit High	The following diagnosis conditions are met, and the TCM select switch ON-OFF solenoid valve monitor value is OFF continuously for 0.5 seconds or more. - Diagnosis condition - Select switch ON-OFF solenoid valve: ON - TCM power supply voltage: 10 V < TCM power supply voltage < 16 V	- Harness or connector (Select switch ON-OFF solenoid valve circuit is open or shorted to power supply) - Select switch ON-OFF solenoid valve

DTC REPRODUCTION PROCEDURE

1.PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>> GO TO 2.

2.CHECK DTC DETECTION

1. Start the engine.
2. Maintain the following conditions for 5 seconds or more.
3. Check the first trip DTC.

Is "P0974" detected?

YES >> Go to TM, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK CIRCUIT BETWEEN TCM AND A/T UNIT

1. Turn ignition switch OFF.
2. Disconnect the TCM connector and A/T unit connector.
3. Check the continuity between the TCM harness connector and the A/T unit harness connector 

Is the check result normal?

YES >> GO TO 2.

NO >> Repair or replace the malfunctioning parts.

2.CHECK SELECT SWITCH ON-OFF SOLENOID VALVE

Check the select switch ON-OFF solenoid valve. Refer to TM, "Component Inspection (Select Switch ONOFF Solenoid Valve)".

Is the check result normal?

YES >> Check intermittent incident. Refer to GI, "Intermittent Incident".

NO >> Repair or replace the malfunctioning parts.

Component Inspection (Select Switch ON-OFF Solenoid Valve)

1.CHECK SELECT SWITCH ON-OFF SOLENOID VALVE

Check the resistance between the A/T unit connector and ground. 

Is the check result normal?

YES >> INSPECTION END

NO >> There is a malfunction of select switch ON-OFF solenoid valve. Replace the transaxle assembly.

Refer to TM, "Removal and Installation".