Nissan Pathfinder (2010 year). Manual — part 610
TM-8
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
DIAGNOSTIC WORK SHEET
Symptoms
Vehicle does not move. (
Any position
Particular position)
No up-shift (
1st
→
2nd
2nd
→
3rd
3rd
→
4th
4th
→
5th)
No down-shift (
5th
→
4th
4th
→
3rd
3rd
→
2nd
2nd
→
1st)
Lock-up malfunction
Shift point too high or too low.
Shift shock or slip (
N
→
D
N
→
R
Lock-up
Any drive position)
Noise or vibration
No kick down
No pattern select
Cannot be changed to manual mode
Others
(
)
A/T CHECK indicator lamp (with
manual mode)
Continuously lit
Not lit
O/D OFF indicator lamp (without
manual mode)
Continuously lit
Not lit
Malfunction indicator lamp (MIL)
Continuously lit
Not lit
1
Read the item on cautions concerning fail-safe and understand the customer's complaint.
2
A/T fluid inspection, stall test and line pressure test
A/T fluid inspection
Leak (Repair leak location.)
State
Amount
Stall test
Torque converter one-way clutch
Front brake
High and low reverse clutch
Low coast brake
Forward brake
Reverse brake
Forward one-way clutch
1st one-way clutch
3rd one-way clutch
Engine
Line pressure low
Except for input
clutch and direct clutch,
clutches and brakes
OK
Line pressure test - Suspected part:
3
Perform self-diagnosis. — Check detected items to repair or replace malfunctioning part.
4
Perform road test.
5-1
Check before engine is started
5-2
Check at idle
5-3
Cruise test
Part 1
Part 2
Part 3
Check malfunction phenomena to repair or replace malfunctioning part after completing all road test.
Refer to
5
Drive vehicle to check that the malfunction phenomenon has been resolved.
6
Erase the results of the self-diagnosis from the TCM and the ECM.
2010 Pathfinder
A/T CONTROL SYSTEM
TM-9
< FUNCTION DIAGNOSIS >
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
FUNCTION DIAGNOSIS
A/T CONTROL SYSTEM
Cross-Sectional View
INFOID:0000000005257947
2WD models
SCIA5267E
1.
Front planetary gear
2.
Mid planetary gear
3.
Rear planetary gear
4.
Direct clutch
5.
High and low reverse clutch
6.
Reverse brake
7.
Drum support
8.
Forward brake
9.
Low coast brake
10. Input shaft
11. Torque converter
12. Oil pump
13. Front brake
14. 3rd one-way clutch
15. Input clutch
16. 1st one-way clutch
17. Control valve with TCM
18. Forward one-way clutch
19. Rear extension
20. Output shaft
2010 Pathfinder
TM-10
< FUNCTION DIAGNOSIS >
A/T CONTROL SYSTEM
4WD models
Shift Mechanism
INFOID:0000000005257948
The automatic transmission uses compact triple planetary gear systems to improve power-transmission effi-
ciency, simplify construction and reduce weight.
It also employs an optimum shift control and super wide gear ratios. They improve starting performance and
acceleration during medium and high-speed operation.
CONSTRUCTION
SCIA5268E
1.
Front planetary gear
2.
Mid planetary gear
3.
Rear planetary gear
4.
Direct clutch
5.
High and low reverse clutch
6.
Reverse brake
7.
Drum support
8.
Forward brake
9.
Low coast brake
10. Input shaft
11. Torque converter
12. Oil pump
13. Front brake
14. 3rd one-way clutch
15. Input clutch
16. 1st one-way clutch
17. Control valve with TCM
18. Forward one-way clutch
19. Adapter case
20. Output shaft
2010 Pathfinder
A/T CONTROL SYSTEM
TM-11
< FUNCTION DIAGNOSIS >
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
FUNCTION OF CLUTCH AND BRAKE
CLUTCH AND BAND CHART (Without Manual Mode)
1.
Front brake
2.
Input clutch
3.
Direct clutch
4.
High and low reverse clutch
5.
Reverse brake
6.
Forward brake
7.
Low coast brake
8.
1st one-way clutch
9.
Forward one-way clutch
10. 3rd one-way clutch
11. Front sun gear
12. Input shaft
13. Mid internal gear
14. Front internal gear
15. Rear carrier
16. Rear sun gear
17. Mid sun gear
18. Front carrier
19. Mid carrier
20. Rear internal gear
21. Output shaft
22. Parking gear
23. Parking pawl
PCIA0002J
Name of the Part
Abbreviation
Function
Front brake (1)
FR/B
Fastens the front sun gear (11).
Input clutch (2)
I/C
Connects the input shaft (12), the front internal gear (14) and the mid internal
gear (13).
Direct clutch (3)
D/C
Connects the rear carrier (15) and the rear sun gear (16).
High and low reverse clutch (4)
HLR/C
Connects the mid sun gear (17) and the rear sun gear (16).
Reverse brake (5)
R/B
Fastens the rear carrier (15).
Forward brake (6)
Fwd/B
Fastens the mid sun gear (17).
Low coast brake (7)
LC/B
Fastens the mid sun gear (17).
1st one-way clutch (8)
1st WOC
Allows the rear sun gear (16) to turn freely forward relative to the mid sun gear
(17) but fastens it for reverse rotation.
Forward one-way clutch (9)
Fwd OWC
Allows the mid sun gear (17) to turn freely in the forward direction but fastens it
for reverse rotation.
3rd one-way clutch (10)
3rd OWC
Allows the front sun gear (11) to turn freely in the forward direction but fastens
it for reverse rotation.
Shift position
I/C
HLR/C
D/C
R/B
FR/B
LC/B
Fwd/B
1st
OWC
Fwd
OWC
3rd
OWC
Remarks
P
PARK POSITION
R
REVERSE POSI-
TION
2010 Pathfinder
TM-12
< FUNCTION DIAGNOSIS >
A/T CONTROL SYSTEM
•
—Operates
•
—Operates during “progressive” acceleration.
•
—Operates and effects power transmission while coasting.
•
—Line pressure is applied but does not affect power transmission.
•
—Operates under conditions shown in HLR/C Operating Condition
•
—Operates under conditions shown in LC/B Operating Condition. Delay control is applied during D (4,3,2,1)
⇒
N shift.
• *1: A/T will not shift to 5th when overdrive control switch is set in “OFF” position.
CLUTCH AND BAND CHART (With Manual Mode)
N
NEUTRAL POSI-
TION
D*1
1st
Automatic shift
1
⇔
2
⇔
3
⇔
4
⇔
5
2nd
3rd
4th
5th
3
1st
Automatic shift
1
⇔
2
⇔
3
⇐
4
2nd
3rd
4th
2
1st
Automatic shift
1
⇔
2
⇐
3
⇐
4
2nd
3rd
4th
1
1st
Locks (held sta-
tionary in 1st
gear)
1
⇐
2
⇐
3
⇐
4
2nd
3rd
4th
Shift position
I/C
HLR/C
D/C
R/B
FR/B
LC/B
Fwd/B
1st
OWC
Fwd
OWC
3rd
OWC
Remarks
SCIA5642E
Shift position
I/C
HLR/C
D/C
R/B
FR/B
LC/B
Fwd/B
1st
OWC
Fwd
OWC
3rd
OWC
Remarks
P
PARK POSITION
R
REVERSE PO-
SITION
2010 Pathfinder
A/T CONTROL SYSTEM
TM-13
< FUNCTION DIAGNOSIS >
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
•
—Operates
•
—Operates during “progressive” acceleration.
•
—Operates and effects power transmission while coasting.
•
—Line pressure is applied but does not affect power transmission.
•
—Operates under conditions shown in HLR/C Operating Condition
•
—Operates under conditions shown in LC/B Operating Condition. Delay control is applied during D (4,3,2,1)
⇒
N shift.
POWER TRANSMISSION
“N” Position
N
NEUTRAL POSI-
TION
D
1st
Automatic shift
1
⇔
2
⇔
3
⇔
4
⇔
5
2nd
3rd
4th
5th
M5
1st
Automatic shift
1
⇔
2
⇔
3
⇔
4
⇔
5
2nd
3rd
4th
5th
M4
1st
Automatic shift
1
⇔
2
⇔
3
⇔
4
2nd
3rd
4th
M3
1st
Automatic shift
1
⇔
2
⇔
3
2nd
3rd
M2
1st
Automatic shift
1
⇔
2
2nd
M1
1st
Locks (held sta-
tionary in 1GR)
2nd
Shift position
I/C
HLR/C
D/C
R/B
FR/B
LC/B
Fwd/B
1st
OWC
Fwd
OWC
3rd
OWC
Remarks
SCIA5642E
2010 Pathfinder
TM-14
< FUNCTION DIAGNOSIS >
A/T CONTROL SYSTEM
Since both the forward brake and the reverse brake are released, torque from the input shaft drive is not trans-
mitted to the output shaft.
“P” Position
• The same as for the “N” position, both the forward brake and the reverse brake are released, so torque from
the input shaft drive is not transmitted to the output shaft.
• The parking pawl linked with the select lever meshes with the parking gear and fastens the output shaft
mechanically.
“D1”Position (With Manual Mode) / "D
1
", “3
1
" and “2
1
” Positions (Without Manual Mode)
• The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.
• The 1st one-way clutch regulates reverse rotation of the rear sun gear.
• The 3rd one-way clutch regulates reverse rotation of the front sun gear.
• During deceleration, the mid sun gear turns forward, so the forward one-way clutch idles and the engine
brake is not activated.
1.
Front brake
2.
Input clutch
3.
Direct clutch
4.
High and low reverse clutch
5.
Reverse brake
6.
Forward brake
7.
Low coast brake
8.
1st one-way clutch
9.
Forward one-way clutch
10. 3rd one-way clutch
11. Front sun gear
12. Input shaft
13. Mid internal gear
14. Front internal gear
15. Rear carrier
16. Rear sun gear
17. Mid sun gear
18. Front carrier
19. Mid carrier
20. Rear internal gear
21. Output shaft
22. Parking gear
23. Parking pawl
PCIA0003J
2010 Pathfinder
A/T CONTROL SYSTEM
TM-15
< FUNCTION DIAGNOSIS >
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
“M1” Position (With Manual Mode) / "1
1
" Position (Without Manual Mode)
• The front brake fastens the front sun gear.
• The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.
• High and low reverse clutch connects the rear sun gear and the mid sun gear.
• The low coast brake fastens the mid sun gear.
• During deceleration, the low coast brake regulates forward rotation of the mid sun gear and the engine brake
functions.
1.
Front brake
2.
Input clutch
3.
Direct clutch
4.
High and low reverse clutch
5.
Reverse brake
6.
Forward brake
7.
Low coast brake
8.
1st one-way clutch
9.
Forward one-way clutch
10. 3rd one-way clutch
11. Front sun gear
12. Input shaft
13. Mid internal gear
14. Front internal gear
15. Rear carrier
16. Rear sun gear
17. Mid sun gear
18. Front carrier
19. Mid carrier
20. Rear internal gear
21. Output shaft
22. Parking gear
23. Parking pawl
SCIA1512E
2010 Pathfinder
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