Nissan Sentra manuals

Nissan Sentra Service Manual: P0998 Shift solenoid F

Nissan Sentra Service Manual / Transmission & driveline / Transaxle & transmission / CVT: RE0F11A / P0998 Shift solenoid F

DTC Logic

DTC DETECTION LOGIC

DTC

 CONSULT screen terms (Trouble diagnosis content)

 DTC detection condition

 Possible causes
P0998 SHIFT SOLENOID F (Shift Solenoid F Control Circuit Low) The TCM low brake solenoid valve current monitor reading is 200 mA or less continuously for 480 msec or more under the following diagnosis conditions:

Diagnosis conditions

  • Solenoid valve output current: 750 mA or more
  • GND short circuit diagnosis occurs in the solenoid valve drive circuit.
  • TCM power supply voltage: More than 11 V
  • Harness or connector (Low brake solenoid valve circuit shorted to ground)
  • Low brake solenoid valve

DTC CONFIRMATION 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. Shift the selector lever to “D” position and wait for 5 seconds or more.
  3. Check the first trip DTC.

Is “P0998” detected? YES >> Go to TM-210, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

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

result normal? 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-211, "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.

result normal? 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".

P0967 Pressure control solenoid B
DTC Logic DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition Possible causes P0967 PC SOLENOID B (Pressure Control So ...

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 ...

Other materials:

Symptom diagnosis
Engine does not start when intelligent key is inside of vehicle Description Engine does not start when push-button ignition switch is pressed while carrying intelligent key. Note: Check that vehicle is under the condition shown in “conditions of vehicle” before starting diagnos ...

Sensor power supply 2 circuit
Description ECM supplies a voltage of 5.0 V to some of the sensors systematically divided into 2 groups, respectively. Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the shorted-circui ...

Component parts
Engine control system ENGINE CONTROL SYSTEM :Component Parts Location Engine room compartment No. Component Function 1 IPDM E/R IPDM E/R control the internal relays and the actuators. When CAN communication with ECM is impossible, IPDM E/R performs fail-sa ...

© 2014-2025 Copyright www.nisentra.com