Nissan Murano. Instruction — part 1404
TM-158
< PERIODIC MAINTENANCE >
[CVT: RE0F09B]
LINE PRESSURE TEST
LINE PRESSURE TEST
Inspection and Judgment
INFOID:0000000009719566
INSPECTION
Line Pressure Test Procedure
1.
Inspect the amount of engine oil and replenish if necessary.
2.
Drive the car for about 10 minutes to warm it up so that the CVT fluid reaches in the range of 50 to 80
°
C
(122 to 176
°
F). Then inspect the amount of CVT fluid and replenish if necessary.
NOTE:
The CVT fluid temperature rises in the range of 50 to 80
°
C (122 to 176
°
F) during 10 minutes of driv-
ing.
3.
After warming up transaxle assembly, remove oil pressure
detection plug and install oil pressure gauge [special service
tool: — (OTC3492)].
CAUTION:
When using oil pressure gauge, be sure to use O-ring
attached to oil pressure detection plug.
4.
Securely engage parking brake so that the tires do not turn.
5.
Start the engine, and then measure the line pressure at both idle
and the stall speed.
CAUTION:
• Keep brake pedal pressed all the way down during mea-
surement.
• When measuring the line pressure at the stall speed.
Refer to
TM-156, "Inspection and Judgment"
.
6.
Install oil pressure detection plug and tighten to the specified
torque below after the measurements are complete.
CAUTION:
• Never reuse O-ring.
• Apply CVT fluid to O-ring.
JUDGMENT
SCIA7972E
SCIA7463E
Line pressure
: Refer to
.
: 7.5 N·m (0.77 kg-m, 66 in-lb)
SAT493G
LINE PRESSURE TEST
TM-159
< PERIODIC MAINTENANCE >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Judgment Possible
cause
Idle speed
Low for all positions
(“P”, “R”, “N”, “D”, “L”)
Possible causes include malfunctions in the pressure supply system and low oil pump output.
For example
• Oil pump wear
• Pressure regulator valve or plug sticking or spring fatigue
• Oil strainer
⇒
oil pump
⇒
pressure regulator valve passage oil leak
• Engine idle speed too low
Only low for a specific
position
Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the instruction valve.
High
Possible causes include a sensor malfunction or malfunction in the line pressure adjustment
function.
For example
• Accelerator pedal position signal malfunction
• CVT fluid temperature sensor malfunction
• Pressure control solenoid A (line pressure solenoid) malfunction (sticking in OFF state, filter
clog, cut line)
• Pressure regulator valve or plug sticking
Stall speed
Line pressure does not
rise higher than the line
pressure for idle.
Possible causes include a sensor malfunction or malfunction in the pressure adjustment func-
tion.
For example
• Accelerator pedal position signal malfunction
• TCM malfunction
• Pressure control solenoid A (line pressure solenoid) malfunction (shorting, sticking in ON
state)
• Pressure regulator valve or plug sticking
The pressure rises, but
does not enter the
standard position.
Possible causes include malfunctions in the pressure supply system and malfunction in the pres-
sure adjustment function.
For example
• Accelerator pedal position signal malfunction
• Pressure control solenoid A (line pressure solenoid) malfunction (sticking, filter clog)
• Pressure regulator valve or plug sticking
Only low for a specific
position
Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the instruction valve.
TM-160
< PERIODIC MAINTENANCE >
[CVT: RE0F09B]
ROAD TEST
ROAD TEST
Description
INFOID:0000000009719567
DESCRIPTION
• The purpose of the test is to determine the overall performance of
CVT and analyze causes of problems.
• The road test consists of the following three parts:
1.
“Check Before Engine Is Started”
2.
3.
.
• Before the road test, familiarize yourself with all test procedures
and items to check.
• Perform tests for all the check items until a malfunction phenome-
non is detected. Perform diagnosis for NG items after the comple-
tion of road tests.
Check before Engine Is Started
INFOID:0000000009719568
1.
CHECK OD OFF INDICATOR LAMP
1.
Park vehicle on flat surface.
2.
Move selector lever to “P” position.
3.
Turn ignition switch OFF. Wait at least 5 seconds.
4.
Turn ignition switch ON. (Never start engine.)
Has OD OFF indicator lamp been turned ON for about 2 seconds?
YES
>> 1.
Turn ignition switch OFF.
2.
Perform self-diagnosis and note NG items. Refer to
.
3.
Go to
.
NO
>> Stop “Road Test”. Refer to
.
Check at Idle
INFOID:0000000009719569
1.
CHECK STARTING THE ENGINE (PART 1)
1.
Park vehicle on flat surface.
2.
Move selector lever to “P” or “N” position.
3.
Turn ignition switch OFF.
4.
Turn ignition switch to “START” position.
Is engine started?
YES
>> GO TO 2.
NO
>> Stop “Road Test”. Refer to
.
2.
CHECK STARTING THE ENGINE (PART 2)
1.
Turn ignition switch ON.
2.
Move selector lever to “D”, “L” or “R” position.
3.
Turn ignition switch to “START” position.
Is engine started?
SAT786A
SAT496G
ROAD TEST
TM-161
< PERIODIC MAINTENANCE >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
YES
>> Stop “Road Test”. Refer to
.
NO
>> GO TO 3.
3.
CHECK “P” POSITION FUNCTION
1.
Move selector lever to “P” position.
2.
Turn ignition switch OFF.
3.
Release parking brake.
4.
Push vehicle forward or backward.
5.
Apply parking brake.
Does vehicle move forward or backward?
YES
>> Refer to
. GO TO 4.
NO
>> GO TO 4.
4.
CHECK “N” POSITION FUNCTION
1.
Start engine.
2.
Move selector lever to “N” position.
3.
Release parking brake.
Does vehicle move forward or backward?
YES
>> Refer to
. GO TO 5.
NO
>> GO TO 5.
5.
CHECK SHIFT SHOCK
1.
Apply foot brake.
2.
Move selector lever to “R” position.
Is there large shock when changing from “N” to “R” position?
YES
>> Refer to
. GO TO 6.
NO
>> GO TO 6.
6.
CHECK “R” POSITION FUNCTION
Release foot brake for several seconds.
Does vehicle creep backward when foot brake is released?
YES
>> GO TO 7.
NO
>> Refer to
. GO TO 7.
7.
CHECK “D” POSITION FUNCTION
Move selector lever to “D” and “L” position and check if vehicle creeps forward.
Does vehicle creep forward in all positions?
YES
>> Go to
.
NO
>> Stop “Road Test”. Refer to
.
Cruise Test
INFOID:0000000009719570
1.
CHECK VEHICLE SPEED WHEN SHIFTING GEARS (PART 1)
1.
Drive vehicle for approximately 10 minutes to warm engine oil and CVT fluid up to operating temperature.
2.
Park vehicle on flat surface.
3.
Move selector lever to “P” position.
4.
Start engine.
5.
Move selector lever to “D” position.
CVT fluid operating temperature
: 50 – 80
°
C (122 – 176
°
F)
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