Nissan Altima L32. Instruction — part 1500
TM-344
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P0841 PRESSURE SENSOR FUNCTION
P0841 PRESSURE SENSOR FUNCTION
Description
INFOID:0000000004201925
Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolu-
tion speed as input signal, TCM changes the operating pressure of the primary pulley and the secondary pul-
ley and changes the groove width of the pulley to control the gear ratio.
DTC Logic
INFOID:0000000004201926
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.
1.
CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “DATA MONITOR”.
3. Start engine and maintain the following conditions for at least 12 consecutive seconds.
Is “P0841 PRESS SEN/FNCTN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000004201927
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-423, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-423, "Inspection and Judgment"
.
2.
CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-
TEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
1. Turn ignition switch OFF.
2. Disconnect CVT unit connector.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0841
PRESS SEN/FNCTN
Secondary pressure became higher than
line pressure.
• Harness or connectors
(Sensor circuit is open or shorted.)
• Transmission fluid pressure sensor A
(secondary pressure sensor)
VEHICLE SPEED
: 40 km/h (25 MPH) or more
RANGE
: “D” position
P0841 PRESSURE SENSOR FUNCTION
TM-345
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
3. Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace transaxle assembly. Refer to
4.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to
Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace transaxle assembly. Refer to
5.
CHECK STEP MOTOR SYSTEM
Check step motor system. Refer to
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000004201928
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit terminal 2 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000004201929
1.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit terminal 3 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
CVT unit terminal
Ground
Resistance (Approx.)
2
3.0 – 9.0
Ω
AWDIA0122ZZ
CVT unit terminal
Ground
Resistance (Approx.)
3
3.0 – 9.0
Ω
AWDIA0123ZZ
TM-346
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P0868 SECONDARY PRESSURE DOWN
P0868 SECONDARY PRESSURE DOWN
Description
INFOID:0000000004201933
The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pressure
to suit the driving condition in response to a signal sent from the TCM.
DTC Logic
INFOID:0000000004201934
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.
1.
CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “DATA MONITOR”.
3. Make sure that output voltage of CVT fluid temperature sensor is within the range below.
4. Start engine and maintain the following conditions for at least 10 consecutive seconds.
Is “P0868 SEC/PRESS DOWN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000004201935
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-423, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-423, "Inspection and Judgment"
.
2.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
1. Turn ignition switch OFF.
2. Disconnect CVT unit connector.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0868
SEC/PRESS DOWN
Secondary fluid pressure is too low com-
pared with the commanded value while driv-
ing.
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Pressure control solenoid valve B (sec-
ondary pressure solenoid valve) system
• Transmission fluid pressure sensor A
(secondary pressure sensor)
• Line pressure control system
ATF TEMP SEN
: 1.0 – 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool
down the fluid)
VEHICLE SPEED (accelerate slow-
ly)
: 0
→ 50 km/h (31 MPH)
ACC PEDAL OPEN
: 0.5/8 – 1.0/8
RANGE
: “D” position
P0868 SECONDARY PRESSURE DOWN
TM-347
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
3. Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to
nent Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace transaxle assembly. Refer to
3.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace transaxle assembly. Refer to
4.
CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-
TEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000004201936
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit terminal 2 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000004201937
1.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
CVT unit terminal
Ground
Resistance (Approx.)
2
3.0 – 9.0
Ω
AWDIA0122ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст