Infiniti EX35. Manual — part 1440
TM-148
< ON-VEHICLE MAINTENANCE >
[5AT: RE5R05A]
LINE PRESSURE TEST
Judgment Possible
cause
Idle speed
Low for all positions
(“P”, “R”, “N”, “D”, “M”)
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 manual valve.
High
Possible causes include a sensor malfunction or malfunction in the line pressure adjustment
function.
For example
• Accelerator pedal position signal malfunction
• A/T fluid temperature sensor malfunction
• Line pressure solenoid malfunction (sticking in OFF state, filter clog, cut line)
• Pressure regulator valve or plug sticking
Stall speed
Oil pressure does not
rise higher than the oil
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 breakdown
• Line pressure solenoid malfunction (shorting, sticking in ON state)
• Pressure regulator valve or plug sticking
• Pilot valve sticking or pilot filter clogged
The pressure rises, but
does not enter the stan-
dard position.
Possible causes include malfunctions in the pressure supply system and malfunction in the
pressure adjustment function.
For example
• Accelerator pedal position signal malfunction
• Line pressure solenoid malfunction (sticking, filter clog)
• Pressure regulator valve or plug sticking
• Pilot valve sticking or pilot filter clogged
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 manual valve.
ROAD TEST
TM-149
< ON-VEHICLE MAINTENANCE >
[5AT: RE5R05A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
ROAD TEST
Description
INFOID:0000000003130592
• The road test inspects overall performance of the A/T and analyzes possible malfunction causes.
• The road test is performed out in the following three stages.
1.
TM-149, "Check Before Engine Is Started"
2.
.
3.
Cruise test
•
TM-150, "Cruise Test - Part 1"
•
TM-151, "Cruise Test - Part 2"
•
TM-152, "Cruise Test - Part 3"
CAUTION:
Always drive vehicle at a safe speed.
• Check the test procedure and inspection items before beginning the road test.
• Test all inspection items until the symptom is uncovered. Diagnose NG items when all road tests are com-
plete.
Check Before Engine Is Started
INFOID:0000000003130593
1.
CHECK A/T CHECK INDICATOR LAMP
1.
Park vehicle on level surface.
2.
Shift the selector lever to “P” position.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Turn ignition switch ON. (Do not start engine.)
Does A/T CHECK indicator lamp light up for about 2 seconds?
YES
>> Go to
NO
>> Stop the road test and go to
Check at Idle
INFOID:0000000003130594
1.
CHECK STARTING THE ENGINE
1.
Park vehicle on level surface.
2.
Shift the selector lever to “P” or “N” position.
3.
Turn ignition switch OFF.
4.
Start the engine.
Does the engine start?
YES
>> GO TO 2.
NO
>> Stop the road test and go to
2.
CHECK STARTING THE ENGINE
1.
Turn ignition switch ON. (Do not start engine.)
2.
Shift the selector lever to “D”, “M” or “R” position.
3.
Start the engine.
Does the engine start in any positions?
YES
>> Stop the road test and go to
NO
>> GO TO 3.
3.
CHECK “P” POSITION FUNCTIONS
1.
Shift the selector lever to “P” position.
2.
Turn ignition switch OFF.
3.
Release the parking brake.
4.
Push the vehicle forward or backward.
5.
Engage the parking brake.
When you push the vehicle while disengaging the parking brake, does it move?
YES
>> Record the malfunction, GO TO 4.
NO
>> GO TO 4.
TM-150
< ON-VEHICLE MAINTENANCE >
[5AT: RE5R05A]
ROAD TEST
4.
CHECK “N” POSITION FUNCTIONS
1.
Start the engine.
2.
Shift the selector lever to “N” position.
3.
Release the parking brake.
Does vehicle move forward or backward?
YES
>> Record the malfunction, GO TO 5.
NO
>> GO TO 5.
5.
CHECK SHIFT SHOCK
1.
Engage the brake.
2.
Shift the selector lever to “D” position.
When the A/T is shifted from “N” to “D”, is there an excessive shock?
YES
>> Record the malfunction, GO TO 6.
NO
>> GO TO 6.
6.
CHECK “R” POSITION FUNCTIONS
1.
Shift the selector lever to “R” position.
2.
Release the brake for 4 to 5 seconds.
Does the vehicle creep backward?
YES
>> GO TO 7.
NO
>> Record the malfunction, GO TO 7.
7.
CHECK “D” POSITION FUNCTIONS
Inspect whether the vehicle creeps forward when the A/T is put into the “D” position.
Does the vehicle creep forward in the “D” position?
YES
>> Go to
TM-150, "Cruise Test - Part 1"
.
NO
>> Record the malfunction and go to
TM-150, "Cruise Test - Part 1"
.
Cruise Test - Part 1
INFOID:0000000003130595
1.
CHECK STARTING OUT FROM D
1
1.
Drive the vehicle for about 10 minutes to warm up the engine oil and ATF.
Appropriate temperature for the ATF: 50 to 80
°
C (122 to 176
°
F)
2.
Park the vehicle on a level surface.
3.
Shift the selector lever to “D” position.
4.
Press the accelerator pedal about half-way down to accelerate the vehicle.
With CONSULT-III
Read the value of “GEAR” with “Data Monitor” mode for “TRANSMISSION”.
Starts from D
1
?
YES
>> GO TO 2.
NO
>> Record the malfunction, GO TO 2.
2.
CHECK SHIFT-UP
Depress the accelerator pedal about half-way and inspect if the vehicle shifts up (D
1
→
D
2
→
D
3
→
D
4
→
D
5
) at
the appropriate speed. Refer to
TM-269, "Vehicle Speed at Which Gear Shifting Occurs"
With CONSULT-III
Read the value of “GEAR”, “ACCELE POSI” and “VEHICLE SPEED” with “Data Monitor” mode for “TRANS-
MISSION”.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Record the malfunction, GO TO 3.
3.
CHECK LOCK-UP
When releasing accelerator pedal (closed throttle position signal OFF) from D
5
, check lock-up from D
5
to L/U.
TM-269, "Vehicle Speed at Which Lock-up Occurs/Releases"
With CONSULT-III
ROAD TEST
TM-151
< ON-VEHICLE MAINTENANCE >
[5AT: RE5R05A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Select “TCC SOLENOID” with “Data Monitor” mode for “TRANSMISSION”. Refer to
Does it lock-up?
YES
>> GO TO 4.
NO
>> Record the malfunction, GO TO 4.
4.
CHECK LOCK-UP HOLD
Check hold lock-up.
With CONSULT-III
Select “TCC SOLENOID” with “Data Monitor” mode for “TRANSMISSION”. Refer to
Does it maintain lock-up status?
YES
>> GO TO 5.
NO
>> Record the malfunction, GO TO 5.
5.
CHECK LOCK-UP RELEASE
Check lock-up cancellation by depressing brake pedal lightly to decelerate.
With CONSULT-III
Select “TCC SOLENOID” with “Data Monitor” mode for “TRANSMISSION”. Refer to
Does lock-up cancel?
YES
>> GO TO 6.
NO
>> Record the malfunction, GO TO 6.
6.
CHECK SHIFT-DOWN D
5
→
D
4
Decelerate by pressing lightly on the brake pedal.
With CONSULT-III
Read the value of “GEAR” and “ENGINE SPEED” with “Data Monitor” mode for “TRANSMISSION”.
When the A/T shift-down D
5
→
D
4
, does the engine speed drop smoothly back to idle?
YES
>> 1.
Stop the vehicle.
2.
Go to
TM-151, "Cruise Test - Part 2"
.
NO
>> Record the malfunction and go to
TM-151, "Cruise Test - Part 2"
.
Cruise Test - Part 2
INFOID:0000000003130596
1.
CHECK SHIFT-UP
Depress the accelerator pedal down all the way and inspect whether or not the A/T shifts up (D
1
→
D
2
→
D
3
) at
TM-269, "Vehicle Speed at Which Gear Shifting Occurs"
.
With CONSULT-III
Read the value of “GEAR”, “ACCELE POSI” and “VEHICLE SPEED” with “Data Monitor” mode for “TRANS-
MISSION”.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Record the malfunction, GO TO 2.
2.
CHECK SHIFT-UP D
3
→
D
4
AND ENGINE BRAKE
When the A/T changes speed D
3
→
D
4
, release the accelerator pedal.
With CONSULT-III
Read the value of “GEAR” with “Data Monitor” mode for “TRANSMISSION”.
Does the A/T shift-up D
3
→
D
4
and apply the engine brake?
YES
>> 1.
Stop the vehicle.
2.
Go to
TM-152, "Cruise Test - Part 3"
.
NO
>> Record the malfunction and go to
TM-152, "Cruise Test - Part 3"
.
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