2006 INFINITI M35 engine

AT-62
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
4. CHECK SHIFT-UP D3 D4 AND ENGINE BRAKE
When the A/T changes speed D3
D4, return the accelerator pedal.
With CONSULT-II
Read the gear position. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Does the A/T shift-up D3
D4 and apply the engine brake?
YES >> 1. Stop the vehicle.
2. Go to AT- 6 2 , "
Cruise Test - Part 3" .
NO >> Enter a check mark at “A/T Does Not Shift: D3
D4” on the AT- 4 8 , "DIAGNOSTIC WORK-
SHEET" , then continue the road test. Go to AT-62, "Cruise Test - Part 3" .
Cruise Test - Part 3NCS001KC
1. MANUAL MODE FUNCTION
Move to manual mode from “D” position.
Does it switch to manual mode?
YES >> GO TO 2.
NO >> Continue road test and add check mark to “Cannot Be Changed to Manual Mode” on AT- 4 8 ,
"DIAGNOSTIC WORKSHEET" .
2. CHECK SHIFT-DOWN
During manual mode driving, is downshift from M5
M4 M3 M2 M1 performed?
With CONSULT-II
Read the gear position. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Is downshifting correctly performed?
YES >> GO TO 2.
NO >> Enter a check mark at “A/T Does Not Shift” at the corresponding position (5th
4th, 4th 3rd,
3rd
2nd, 2nd 1st) on the AT- 4 8 , "DIAGNOSTIC WORKSHEET" , then continue the road test.
3. CHECK ENGINE BRAKE
Check engine brake.
Does engine braking effectively reduce speed in M1 position?
YES >> 1. Stop the vehicle.
2. Perform self-diagnostics. Refer to AT- 9 2 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 ,
"Diagnostic Procedure without CONSULT-II" .
NO >> Enter a check mark at “Vehicle Does Not Decelerate by Engine Brake” on the AT- 4 8 , "
DIAGNOS-
TIC WORKSHEET" , then continue trouble diagnosis.

TROUBLE DIAGNOSIS
AT-63
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 January2006 M35/M45
Vehicle Speed at Which Gear Shifting OccursNCS001KD
2WD MODELS
At half throttle, the accelerator opening is 4/8 of the full opening.
At half throttle, the accelerator opening is 4/8 of the full opening.
AWD MODELS
At half throttle, the accelerator opening is 4/8 of the full opening.
Vehicle Speed at Which Lock-Up Occurs/ReleasesNCS001KE
2WD MODELS
At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)
At half throttle, the accelerator opening is 4/8 of the full opening.
At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)
At half throttle, the accelerator opening is 4/8 of the full opening. Engine model VQ35DE
Throttle positionVehicle speed km/h (MPH)
D
1 D2D2 D3D3 D4D4 D5D5 D4D4 D3D3 D2D2 D1
Full throttle 50 - 58
(31 - 36)85 - 93
(53 - 58)127 - 135
(79 - 84)196 - 204
(122 - 127)192 - 200
(119 - 124)114- 122
(71 - 76)70 - 78
(43 - 48)26 - 34
(16 - 21)
Half throttle 40 - 48
(25 - 30)69 - 77
(43 - 48)107 - 115
(66 - 71)139 - 147
(86 - 91)111 - 11 9
(69 - 74)67 - 75
(42 - 47)34 - 42
(21 - 26)19 - 27
(12 - 17)
Engine model VK45DE
Throttle positionVehicle speed km/h (MPH)
D
1 D2D2 D3D3 D4D4 D5D5 D4D4 D3D3 D2D2 D1
Full throttle 54 - 62
(34 - 39)89 - 97
(55 - 60)139 - 147
(86 - 91)207 - 215
(129 - 134)203 - 211
(126 - 131)122 - 130
(76 - 81)73 - 81
(45 - 50)28 - 36
(17 - 22)
Half throttle 46 - 54
(29 - 34)81 - 89
(50 - 55)126 - 134
(78 - 83)155 - 163
(96 - 101)128 - 136
(80 - 85)70 - 78
(43 - 48)28 - 36
(17 - 22)7 - 15
(4 - 9)
Engine model VQ35DE
Throttle positionVehicle speed km/h (MPH)
D
1 D2D2 D3D3 D4D4 D5D5 D4D4 D3D3 D2D2 D1
Full throttle 48 - 56
(30 - 35)81 - 89
(50 - 55)121 - 129
(75 - 80)188 - 196
(117 - 122)184 - 192
(114 - 119)109 - 117
(68 - 73)66 - 74
(41 - 46)25 - 33
(16 - 21)
Half throttle 38 - 46
(24 - 29)66 - 74
(41 - 46)102 - 110
(63 - 68)133 - 141
(83 - 88)106 - 114
(66 - 71)64 - 72
(40 - 45)32 - 40
(20 - 25)18 - 26
(11 - 16)
Engine model VQ35DE
Throttle positionVehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 53 - 61 (33 - 38) 50 - 58 (31 - 36)
Half throttle 196 - 204 (122 - 127) 138 - 146 (86 - 91)
Engine model VK45DE
Throttle positionVehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 67 - 75 (42 - 47) 50 - 58 (31 - 36)
Half throttle 181 - 189 (112 - 117) 160 - 168 (99 - 104)

AT-64
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
AW D M OD E LS
At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)
At half throttle, the accelerator opening is 4/8 of the full opening.
Symptom ChartNCS001KF
The diagnostics item numbers show the sequence for inspection. Inspect in order from item 1.
Overhaul and inspection inside the A/T only if A/T fluid condition is NG. Refer to AT- 5 3 , "A/T Fluid Condi-
tion Check" .
Engine model VQ35DE
Throttle positionVehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 51 - 59 (32 - 37) 48 - 56 (30 - 35)
Half throttle 188 - 196 (117 - 122) 132 - 140 (82 - 87)
No. Item Symptom Condition Diagnostic ItemReference
page
1Shift
ShockLarge shock. (“N”

“D” position)
Refer to AT-193,
"Large Shock (“N” to
“D” Position)" .ON vehicle1. Engine idle speedEC-82
( fo r
VQ35DE
engine),
EC-793

(for
VK45DE
engine)
2. Engine speed signalAT- 1 2 4
3. Accelerator pedal position sensorAT- 1 3 2
4. Control linkage adjustmentAT- 2 2 7
5. A/T fluid temperature sensorAT- 1 3 5
6. ATF pressure switch 1 and front brake solenoid valveAT- 1 7 2,
AT- 1 5 1
7. CAN communication lineAT- 1 0 5
8. A/T fluid level and stateAT- 5 3
9. Line pressure testAT- 5 5
10. Control valve with TCMAT- 2 3 6
OFF vehicle11. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17, "Cross-Sectional View (VQ35DE Models for 2WD)" , AT-18,
"Cross-Sectional View (VK45DE Models for 2WD)" o r AT-19,
"Cross-Sectional View (AWD Models)" .)AT- 2 9 8

TROUBLE DIAGNOSIS
AT-65
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 January2006 M35/M45
2
Shift
ShockShock is too large
when changing D1
D
2 or M1 M2 .ON vehicle1. Accelerator pedal position sensorAT-132
2. Control linkage adjustmentAT-227
3. ATF pressure switch 5 and direct clutch solenoid valveAT-176,
AT-155
4. CAN communication lineAT-105
5. Engine speed signalAT-124
6. Turbine revolution sensorAT- 11 7
7. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT-140
8. A/T fluid level and stateAT- 5 3
9. Control valve with TCMAT-236
OFF vehicle 10. Direct clutchAT-337
3Shock is too large
when changing D2
D
3 or M2 M3 .ON vehicle1. Accelerator pedal position sensorAT-132
2. Control linkage adjustmentAT-227
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valveAT-178,
AT-159
4. CAN communication lineAT-105
5. Engine speed signalAT-124
6. Turbine revolution sensorAT- 11 7
7. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT-140
8. A/T fluid level and stateAT- 5 3
9. Control valve with TCMAT-236
OFF vehicle 10. High and low reverse clutchAT-335
4Shock is too large
when changing D3
D
4 or M3 M4 .ON vehicle1. Accelerator pedal position sensorAT-132
2. Control linkage adjustmentAT-227
3. ATF pressure switch 3 and input clutch solenoid valveAT-174,
AT-147
4. CAN communication lineAT-105
5. Engine speed signalAT-124
6. Turbine revolution sensorAT- 11 7
7. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT-140
8. A/T fluid level and stateAT- 5 3
9. Control valve with TCMAT-236
OFF vehicle 10. Input clutchAT-323
No. Item Symptom Condition Diagnostic ItemReference
page

AT-66
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
5
Shift
ShockShock is too large
when changing D4
D
5 or M4 M5 .ON vehicle1. Accelerator pedal position sensorAT- 1 3 2
2. Control linkage adjustmentAT- 2 2 7
3. ATF pressure switch 1 and front brake solenoid valveAT- 1 7 2,
AT- 1 5 1

4. CAN communication lineAT- 1 0 5
5. Engine speed signalAT- 1 2 4
6. Turbine revolution sensorAT- 11 7
7. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT- 1 4 0
8. A/T fluid level and stateAT- 5 3
9. Control valve with TCMAT- 2 3 6
OFF vehicle10. Front brake (brake band)AT- 2 9 811. Input clutchAT- 3 2 3
6Shock is too large for
downshift when accel-
erator pedal is
pressed.ON vehicle1. Accelerator pedal position sensorAT- 1 3 2
2. Control linkage adjustmentAT- 2 2 7
3. CAN communication lineAT- 1 0 5
4. Engine speed signalAT- 1 2 4
5. Turbine revolution sensorAT- 11 7
6. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT- 1 4 0
7. A/T fluid level and stateAT- 5 3
8. Control valve with TCMAT- 2 3 6
OFF vehicle9. Front brake (brake band)AT- 2 9 810. Input clutch AT- 3 2 3
11. High and low reverse clutchAT- 3 3 5
12. Direct clutchAT- 3 3 7
7Shock is too large for
upshift when acceler-
ator pedal is released.ON vehicle1. Accelerator pedal position sensorAT- 1 3 2
2. Control linkage adjustmentAT- 2 2 7
3. Engine speed signalAT- 1 2 4
4. CAN communication lineAT- 1 0 5
5. Turbine revolution sensorAT- 11 7
6. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT- 1 4 0
7. A/T fluid level and stateAT- 5 3
8. Control valve with TCMAT- 2 3 6
OFF vehicle9. Front brake (brake band)AT- 2 9 810. Input clutch AT- 3 2 3
11. High and low reverse clutch AT- 3 3 5
12. Direct clutch AT- 3 3 7
No. Item Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
AT-67
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 January2006 M35/M45
8
Shift
ShockShock is too large for
lock-up.ON vehicle1. Accelerator pedal position sensorAT-132
2. Control linkage adjustmentAT-227
3. Engine speed signalAT-124
4. CAN communication lineAT-105
5. Turbine revolution sensorAT- 11 7
6. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT-140
7. Torque converter clutch solenoid valveAT-126
8. A/T fluid level and stateAT- 5 3
9. Control valve with TCMAT-236
OFF vehicle 10. Torque converterAT-298
9Shock is too large
during engine brake.ON vehicle1. Accelerator pedal position sensorAT-132
2. Control linkage adjustmentAT-227
3. CAN communication lineAT-105
4. A/T fluid level and stateAT- 5 3
5. Control valve with TCMAT-236
OFF vehicle6. Front brake (brake band)AT-2987. Input clutch AT-323
8. High and low reverse clutchAT-335
9. Direct clutch AT-337
10
No Up
ShiftGear does not change
from D
1 D2 o r f ro m
M
1 M2 .
Refer to AT-201, "
A/T
Does Not Shift: D1
D2" .ON vehicle1. A/T fluid level and stateAT- 5 3
2. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT-140
3. ATF pressure switch 5 and direct clutch solenoid valveAT-176,
AT-155
4. Line pressure testAT- 5 5
5. CAN communication lineAT-105
6. Control valve with TCMAT-236
OFF vehicle 7. Direct clutchAT-337
11Gear does not change
from D
2 D3 o r f ro m
M
2 M3 .
Refer to AT-203, "
A/T
Does Not Shift: D2
D3" .ON vehicle1. A/T fluid level and stateAT- 5 3
2. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT-140
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valveAT-178,
AT-159
4. Line pressure testAT- 5 5
5. CAN communication lineAT-105
6. Control valve with TCMAT-236
OFF vehicle 7. High and low reverse clutchAT-335
No. Item Symptom Condition Diagnostic ItemReference
page

AT-72
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
22
Slips/Will
Not
EngageWhen “D” or “M” posi-
tion, remains in 5th
gear.ON vehicle1. A/T fluid level and stateAT- 5 3
2. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT- 1 4 0

3. ATF pressure switch 1 and front brake solenoid valveAT- 1 7 2
,
AT- 1 5 1
4. Line pressure testAT- 5 5
5. CAN communication lineAT- 1 0 5
6. Control valve with TCMAT- 2 3 6
OFF vehicle7. Front brake (brake band)AT- 2 9 88. Input clutchAT- 3 2 3
9. Gear systemAT- 2 7 8
10. High and low reverse clutchAT- 3 3 5
23Vehicle cannot be
started from D
1 .
Refer to AT-199,
"Vehicle Cannot Be
Started from D1" .ON vehicle1. A/T fluid level and stateAT- 5 3
2. Accelerator pedal position sensorAT- 1 3 2
3. Line pressure testAT- 5 5
4. CAN communication lineAT- 1 0 5
5. Control valve with TCMAT- 2 3 6
OFF vehicle6. Torque converterAT- 2 9 8
7. Oil pump assemblyAT- 3 1 8
8. 3rd one-way clutchAT- 3 2 1
9. 1st one-way clutch AT- 3 2 9
10. Gear systemAT- 2 7 8
11. Reverse brakeAT- 2 9 8
12. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT-17, "
Cross-Sectional View (VQ35DE Models for 2WD)" ,
AT-18, "
Cross-Sectional View (VK45DE Models for 2WD)" o r
AT-19, "
Cross-Sectional View (AWD Models)" .)AT- 2 9 8
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-Sectional View (VQ35DE Models for 2WD)" , AT-18,
"Cross-Sectional View (VK45DE Models for 2WD)" o r AT-19,
"Cross-Sectional View (AWD Models)" .)AT- 2 9 8
24Does not lock-up.
Refer to AT-209, "A/T
Does Not Lock-Up" .ON vehicle1. A/T fluid level and stateAT- 5 3
2. Line pressure testAT- 5 5
3. Engine speed signalAT- 1 2 4
4. Turbine revolution sensorAT- 11 7
5. Torque converter clutch solenoid valveAT- 1 2 6
6. CAN communication lineAT- 1 0 5
7. Control valve with TCMAT- 2 3 6
OFF vehicle8. Torque converterAT- 2 9 89. Oil pump assemblyAT- 3 1 8
No. Item Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
AT-73
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: 2006 January2006 M35/M4525
Slips/Will
Not
EngageDoes not hold lock-up
condition.
Refer to AT-210, "A/T
Does Not Hold Lock-
Up Condition" .ON vehicle1. A/T fluid level and stateAT- 5 3
2. Line pressure testAT- 5 5
3. Engine speed signalAT-124
4. Turbine revolution sensorAT- 11 7
5. Torque converter clutch solenoid valveAT-126
6. CAN communication lineAT-105
7. Control valve with TCMAT-236
OFF vehicle8. Torque converterAT-2989. Oil pump assemblyAT-318
26Lock-up is not
released.
Refer to AT-212,
"Lock-Up Is Not
Released" .ON vehicle1. A/T fluid level and stateAT- 5 3
2. Line pressure testAT- 5 5
3. Engine speed signalAT-124
4. Turbine revolution sensorAT- 11 7
5. Torque converter clutch solenoid valveAT-126
6. CAN communication lineAT-105
7. Control valve with TCMAT-236
OFF vehicle8. Torque converterAT-2989. Oil pump assemblyAT-318
27No shock at all or the
clutch slips when
vehicle changes
speed D
1 D2 or
M
1 M2 . ON vehicle1. A/T fluid level and stateAT- 5 3
2. Vehicle speed sensorꞏA/T and vehicle speed sensorꞏMTRAT- 11 9,
AT-140
3. ATF pressure switch 5 and direct clutch solenoid valveAT-176,
AT-155
4. CAN communication lineAT-105
5. Line pressure testAT- 5 5
6. Control valve with TCMAT-236
OFF vehicle7. Torque converterAT-298
8. Oil pump assemblyAT-318
9. 3rd one-way clutchAT-321
10. Gear systemAT-278
11. Direct clutchAT-337
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-Sectional View (VQ35DE Models for 2WD)" , AT- 1 8 ,
"Cross-Sectional View (VK45DE Models for 2WD)" o r AT- 1 9 ,
"Cross-Sectional View (AWD Models)" .)AT-298
No. Item Symptom Condition Diagnostic ItemReference
page