Nissan Sentra manuals

Nissan Sentra Service Manual: P2857 Clutch A Pressure

DTC Logic

DTC DETECTION LOGIC

DTC

CONSULT screen terms (Trouble diagnosis content)

DTC detection condition

Possible causes

P2857 CLUTCH A PRESSURE (Clutch A Pressure Engagement Performance) The auxiliary gearbox gear ratio is 2.232 or more for the auxiliary gearbox 1GR ratio continuously for 5 seconds 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
  • 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
  • Low brake solenoid valve
  • Control valve assembly

DTC CONFIRMATION PROCEDURE

CAUTION:

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. Drive the vehicle.
  3. Maintain the following conditions for 10 seconds or more.

Selector lever : “L” POSITION

Accelerator pedal position : 0.7/8 or more

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

  1. Stop the vehicle.
  2. Check the first trip DTC.

Is “P2857” detected? YES >> Go to TM-226, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK INTERMITTENT INCIDENT

Refer to GI-39, "Intermittent Incident".

Is the inspection result normal? YES >> Replace the transaxle assembly. Refer to TM-283, "Removal and Installation".

NO >> Repair or replace malfunctioning parts.

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