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
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:
Power supply and ground circuit
A/C auto AMP. : Diagnosis Procedure
1.CHECK SYMPTOM
Check symptom (A or B).
Which symptom is detected?
A >>GO TO 2.
B >>GO TO 5.
2.CHECK FUSE
1. Turn ignition switch OFF.
2. Check 10A fuse (No. 3, located in fuse block (J/B)].
NOTE:
Refer to PG-22, "Fuse, Connector ...
Hazard function
Component Function Check
1.CHECK FUNCTION
1. Select “MULTI REMOTE ENT” of “BCM” using CONSULT-III.
2. Select “FLASHER” in “ACTIVE TEST” mode.
3. Check that the function operates normally according to the following
conditions.
Is the inspection result normal?
YES >> Hazard warning lam ...
Diagnosis and repair workflow
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.INTERVIEW FOR MALFUNCTION
Interview the symptom to the customer
>> GO TO 2.
2.SYMPTOM CHECK
Check the symptom from the customer's information. Check that any symptom
occurs other than the interviewed
symptom.
Insufficient cooling/heat ...