Nissan Versa Sedan Service ManualTransmission & driveline » Transaxle & transmission (TM)
P0974 Shift solenoid A
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
- Start the engine.
- Maintain the following conditions for 5 seconds or more.
- 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
- Turn ignition switch OFF.
- Disconnect the TCM connector and A/T unit connector.
- 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".