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 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 вЂњP0998вЂќ detected? YES >> Go to TM-210, "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 ground.

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.

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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P0999 Shift solenoid F

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Other materials:

Precaution for Work
When removing or disassembling each component, be careful not to damage or deform it. If a component may be subject to interference, be sure to protect it with a shop cloth. When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a ...

C1716, C1717, C1718, C1719 Transmitter (pressure data)
DTC Logic NOTE: The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information. Activate and display TPMS transmitter IDs Display tire pressure reported by the TPMS transmitter Read TPMS DTCs Register ...

Periodic maintenance
M/T OIL Inspection OIL LEAKAGE Make sure that gear oil is not leaking from transaxle or around it. OIL LEVEL Remove filler plug (1) and gasket from transaxle case. Check the oil level from filler plug mounting hole as shown. CAUTION: Do not start engine while checking oil level. Se ...