Nissan Versa (N17): P285A Clutch B pressure

Nissan Versa 2nd generation (N17) Service Manual / Transmission & driveline / Transaxle & transmission (TM) / P285A Clutch B pressure

DTC Logic

DTC DETECTION LOGIC

DTC

Trouble diagnosis name

DTC detection condition

Possible causes

P285A

Clutch B pressure disengagement performance

The detection conditions continuously for 200 msec or more under the following diagnosis conditions:

- Diagnosis conditions

- Selector lever: Other than "P", "R" and "N" positions

- Vehicle speed: 10 km/h (6 MPH) or more

- Engine speed: More than 550 rpm

- Output speed: More than 300 rpm

- Secondary pulley speed: More than 300 rpm

- Command for the 1GR of auxiliary gearbox is in progress.

- Auxiliary gearbox shifting is not in progress.

- TCM power supply voltage: More than 11 V

- Detection conditions

- Acceleration/deceleration: Less than −0.05 G

- Actual auxiliary gearbox gear ratio − Auxiliary gearbox 1GR ratio ≥ 50%

- High clutch & reverse brake solenoid valve

- Control valve assembly

The auxiliary gearbox gear ratio is +-10% or less for the auxiliary gearbox 2GR ratio continuously for 500 msec or more under the following diagnosis conditions:

- Diagnosis conditions

- Selector lever: Other than "P", "R" and "N" positions

- Accelerator pedal position: 0.7/8 or more

- Engine speed: More than 550 rpm

- Secondary pulley speed: More than 300 rpm

- Output speed: More than 300 rpm

- Command for the 1GR of auxiliary gearbox is in progress.

- Auxiliary gearbox shifting is not in progress.

- TCM power supply voltage: More than 11 V

DTC CONFIRMATION PROCEDURE

CAUTION:

Be sure to perform "TM "Diagnosis Procedure"" and then perform "DTC CONFIRMATION PROCEDURE".
Never perform "DTC CONFIRMATION PROCEDURE" before the repairs. Doing so may result in a secondary malfunction.
Be careful of the driving speed.

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.
Drive the vehicle.
Maintain the following conditions for 10 seconds or more.
Stop the vehicle.
Check the first trip DTC.

Selector lever : "L" POSITION

Accelerator pedal position : 0.7/8 or more

Vehicle speed : 10 km/h (6 MPH) or more

Is "P285A" detected?

YES >> Go to TM "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK INTERMITTENT INCIDENT

Refer to GI "Intermittent Incident".

Is the inspection result normal?

YES >> Replace transaxle assembly. Refer to TM "Removal and Installation".

NO >> Repair or replace malfunctioning parts.

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Nissan Versa (N17): P285A Clutch B pressure

P2859 Clutch A pressure

Main power supply and ground circuit

Other materials:

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