Nissan Sentra Service Manual: P0999 Shift solenoid F

Nissan Sentra Service Manual / Transmission & driveline / Transaxle & transmission / CVT: RE0F11A / P0999 Shift solenoid F

DTC Logic

DTC DETECTION LOGIC

DTC

CONSULT screen terms (Trouble diagnosis content)

DTC detection condition

Possible causes

P0999

SHIFT SOLENOID F (Shift Solenoid F Control Circuit High)

The TCM low brake solenoid valve current monitor reading is 200 mA or less continuously for 200 msec or more under the following diagnosis conditions:

Diagnosis conditions

Solenoid valve output current: 750 mA or more
GND short diagnosis of the solenoid valve circuit is not satisfied.
TCM power supply voltage: More than 11 V

Harness or connector (Low brake solenoid valve circuit is open or shorted to power supply)
Low brake solenoid valve

DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE WORK

If another вЂњDTC CONFIRMATION PROCEDUREвЂќ 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.
Shift the selector lever to вЂњDвЂќ position and wait for 5 seconds or more.
Check the first trip DTC.

Is вЂњP0999вЂќ detected? YES >> Go to TM-212, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

Turn ignition switch OFF.
Disconnect TCM connector and CVT unit connector.
Check continuity between TCM harness connector terminal and CVT unit harness connector terminal.

Is the inspection
result normal? YES >> GO TO 2.

NO >> Repair or replace malfunctioning parts.

2.CHECK LOW BRAKE SOLENOID VALVE

Check low brake solenoid valve. Refer to TM-213, "Component Inspection".

Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Repair or replace malfunctioning parts.

Component Inspection

1.CHECK LOW BRAKE SOLENOID VALVE

Check resistance between CVT unit connector terminal and ground.

Is the inspection
result normal? YES >> INSPECTION END

NO >> There is a malfunction of low brake solenoid valve. Replace transaxle assembly. Refer to TM-283, "Removal and Installation".

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