Nissan Juke Service and Repair Manual : P0841 transmission fluid pressure SEN/SW A

Description

Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolution speed as input signal, TCM changes the operating pressure of the primary pulley and the secondary pulley and changes the groove width of the pulley to control the gear ratio.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

CAUTION:
Always drive vehicle at a safe speed.

NOTE:

If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF. Then wait at least 10 seconds before performing the next test.

Perform the following procedure to confirm the malfunction is eliminated after the repair.

1.CHECK DTC DETECTION

With CONSULT-III

1. Turn ignition switch ON.

2. Select “DATA MONITOR” in “TRANSMISSION”.

3. Start engine and maintain the following conditions for at least 12 consecutive seconds.

VEHICLE SPEED : 40 km/h (25 MPH) More than RANGE : “D” position

Is “P0841” detected? YES >> Go to TM-232, "Diagnosis Procedure".

NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

Diagnosis Procedure

1.CHECK LINE PRESSURE

Perform line pressure test. Refer to TM-188, "Inspection and Judgment".

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

NO >> Repair or replace damaged parts. Refer to TM-188, "Inspection and Judgment".

2.CHECK SECONDARY PRESSURE SENSOR SYSTEM

Check secondary pressure sensor system. Refer to TM-230, "DTC Logic".

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace damaged parts.

3.CHECK LINE PRESSURE SOLENOID VALVE

Check line pressure solenoid valve. Refer to TM-220, "Component Inspection".

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair or replace damaged parts.

4.CHECK SECONDARY PRESSURE SOLENOID VALVE

Check secondary pressure solenoid valve. Refer to TM-226, "Component Inspection".

Is the inspection result normal? YES >> GO TO 5.

NO >> Repair or replace damaged parts.

5.CHECK STEP MOTOR

Check step motor. Refer to TM-251, "Component Inspection".

Is the inspection result normal? YES >> GO TO 6.

NO >> Repair or replace damaged parts.

6.CHECK TCM

Check TCM input/output signals. Refer to TM-164, "Reference Value".

Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

NO >> Replace the TCM. Refer to TM-280, "Removal and Installation".

    P0840 transmission fluid pressure SEN/SW A
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF and wait at least 10 seconds befo ...

    P0868 transmission fluid pressure
    Description The secondary pressure solenoid valve regulates the secondary pressure to suit the driving condition in response to a signal sent from the TCM. DTC Logic DTC DETECTION LOGIC DTC C ...

    Other materials:

    Camshaft valve clearance
    Inspection and Adjustment INSPECTION Perform inspection as follows after removal, installation or replacement of camshaft or valve-related parts, or if there is unusual engine conditions regarding valve clearance. 1. Remove rocker cover. Refer to EM-53, "Exploded View". 2. Measure ...

    Diagnosis and repair workflow
    Work Flow INTRODUCTION The TCM receives a signal from the vehicle speed sensor, transmission range switch and provides shift control or lock-up control via CVT solenoid valves. The TCM also communicates with the ECM by means of a signal sent from sensing elements used with the OBD-related p ...

    Operation
    Switch Name and Function OPERATION AND DISPLAY A/C Display (Display in Multi Display Unit) • Air conditioning system operation status is indicated on display in multi display unit. Indication of air conditioning system varies according to display mode of multi display unit. For changing pr ...