INFINITI FX35 2005 Service Manual

AT-58
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
6. CHECK “R” POSITION FUNCTIONS
1. Engage the brake.
2. Move selector lever to “R” position.
3. Disengage the brake for 4 to 5 seconds.
Does the vehicle creep backward?
YES >> GO TO 7.
NO >> Enter a check mark at “Vehicle Does Not Creep Backward In “R” Position” on the AT- 4 7 , "
DIAG-
NOSTIC WORKSHEET" , then continue the road test.
7. CHECK “D” POSITION FUNCTIONS
Inspect whether the vehicle creep forward when the transmission is put into the “D” position.
Does the vehicle creep forward in the
“D” position?
YES >> Go to AT- 5 8 , "Cruise Test - Part 1" , AT- 6 0 , "Cruise Test - Part 2" , and AT- 6 1 , "Cruise Test - Part
3" .
NO >> Enter a check mark at “Vehicle Does Not Creep Forward In “D” Position” on the AT- 4 7 , "
DIAG-
NOSTIC WORKSHEET" , then continue the road test.
Cruise Test - Part 1ACS002M1
1. CHECK STARTING OUT FROM D1
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. Move selector lever to “P” position.
4. Start the engine.
5. Move selector lever to “D” position.
6. Press the accelerator pedal about half way down to accelerate the vehicle.
With CONSULT-II
Read the gear positions. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Starts from D1?
YES >> GO TO 2.
NO >> Enter a check mark at “Vehicle Cannot Be Started From D1” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
2. CHECK SHIFT-UP D1 → D2
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D1 → D2) at the appro-
priate speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle degree of opening, and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR
MODE" .
Does the A/T shift-up D1
→ D2 at the correct speed?
YES >> GO TO 3.
NO >> Enter a check mark at “A/T Does Not Shift: D1 → D2” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.

TROUBLE DIAGNOSIS AT-59
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Revision: 2005 July 2005 FX
3. CHECK SHIFT-UP D2 → D3
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D2 → D3) at the appro-
priate speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle degree of opening, and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR
MODE" .
Does the A/T shift-up D2
→ D3 at the correct speed?
YES >> GO TO 4.
NO >> Enter a check mark at “A/T Does Not Shift: D2 → D3” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
4. CHECK SHIFT-UP D3 → D4
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D3 → D4) at the appro-
priate speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle degree of opening, and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR
MODE" .
Does the A/T shift-up D3
→ D4 at the correct speed?
YES >> GO TO 5.
NO >> Enter a check mark at “A/T Does Not Shift: D3 → D4” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
5. CHECK SHIFT-UP D4 → D5
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D4 → D5) at the appro-
priate speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle degree of opening, and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR
MODE" .
Does the A/T shift-up D4
→ D5 at the correct speed?
YES >> GO TO 6.
NO >> Enter a check mark at “A/T Does Not Shift: D4 → D5” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
6. CHECK LOCK-UP
When releasing accelerator pedal from D5, check lock-up from D5 to L/U.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for “A/T”. Refer to AT- 9 0 , "
CONSULT-II REFER-
ENCE VALUE" .
Does it lock-up?
YES >> GO TO 7.
NO >> Enter a check mark at “A/T Does Not Perform Lock-up” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.

AT-60
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
7. CHECK LOCK-UP HOLD
Check hold lock-up. With CONSULT-II
Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for “A/T”. Refer to AT- 9 0 , "
CONSULT-II REFER-
ENCE VALUE" .
Does it maintain lock-up status?
YES >> GO TO 8.
NO >> Enter a check mark at “A/T Does Not Hold lock-up Condition” on the AT- 4 7 , "
DIAGNOSTIC
WORKSHEET" , then continue the road test.
8. CHECK LOCK-UP RELEASE
Check lock-up cancellation by depressing brake pedal lightly to decelerate. With CONSULT-II
Select “TCC SOLENOID” with the “MAIN SIGNAL” mode for A/T. Refer to AT- 9 0 , "
CONSULT-II REFERENCE
VA L U E" .
Does lock-up cancel?
YES >> GO TO 9.
NO >> Enter a check mark at “Lock-up Is Not Released” on the AT- 4 7 , "
DIAGNOSTIC WORKSHEET" ,
then continue the road test.
9. CHECK SHIFT-DOWN D5 → D4
Decelerate by pressing lightly on the brake pedal. With CONSULT-II
Read the gear position and engine speed. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
When the A/T shift-down D5
→ D4, does the engine speed drop smoothly back to idle?
YES >> 1. Stop the vehicle. 2. Go to AT- 6 0 , "
Cruise Test - Part 2" .
NO >> Enter a check mark at “Engine Speed Does Not Return to Idle” on the AT- 4 7 , "
DIAGNOSTIC
WORKSHEET" , then continue the road test. Go to AT- 6 0 , "Cruise Test - Part 2" .
Cruise Test - Part 2ACS002M2
1. CHECK STARTING FROM D1
1. Move selector lever into “D” position.
2. Accelerate at half throttle.
With CONSULT-II
Read the gear position. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Does it start from D1?
YES >> GO TO 2.
NO >> Enter a check mark at “Vehicle Cannot Be Started from D1” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.

TROUBLE DIAGNOSIS AT-61
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Revision: 2005 July 2005 FX
2. CHECK SHIFT-UP D1 → D2
Press the accelerator pedal down all the way and check whether or not the transmission shifts up (D1 → D2)
at the correct speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Does the A/T shift-up D1
→ D2 at the correct speed?
YES >> GO TO 3.
NO >> Enter a check mark at “A/T Does Not Shift: D1 → D2” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
3. CHECK SHIFT-UP D2 → D3
Press the accelerator pedal down all the way and check whether or not the transmission shifts up (D2 → D3)
at the correct speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle position and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Does the A/T shift-up D2
→ D3 at the correct speed?
YES >> GO TO 4.
NO >> Enter a check mark at “A/T Does Not Shift: D2 → D3” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
4. CHECK SHIFT-UP D3 → D4 AND ENGINE BRAKE
When the transmission 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 1 , "
Cruise Test - Part 3" .
NO >> Enter a check mark at “A/T Does Not Shift: D3 → D4” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test. Go to AT- 6 1 , "Cruise Test - Part 3" .
Cruise Test - Part 3ACS002M3
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 the AT- 4 7 ,
"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 “Vehicle Does Not Shift” at the corresponding position (5th → 4th, 4th →
3rd, 3rd → 2nd, 2nd → 1st) on the AT- 4 7 , "
DIAGNOSTIC WORKSHEET" , then continue the road
test.

AT-62
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
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 3 , "
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 7 , "
DIAGNOS-
TIC WORKSHEET" , then continue trouble diagnosis.
Vehicle Speed at Which Gear Shifting OccursACS002M4
2WD MODELS

At half throttle, the accelerator opening is 4/8 of the full opening.
AW D M OD E LS

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.
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 66 - 74
(41 - 46) 106 - 114
(66 - 71) 165 - 173
(103 - 108) 236 - 244
(147 - 152) 232 - 240
(144 - 149) 145- 153
(90 - 95) 89 - 97
(55 - 60) 41 - 49
(25 - 30)
Half throttle 52 - 60
(32 - 37) 83 - 91
(52 - 57) 127 - 135
(79 - 84) 159 - 167
(99 - 104) 104 - 112
(65 - 70) 75 - 83
(47 - 52) 34 - 42
(21 - 26) 9 - 17
(6 - 11)
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 60 - 68
(37 - 42) 96 - 104
(60 - 65) 150 - 158
(93 - 98) 214 - 222
(133 - 138) 210 - 218
(130 - 135) 132 - 140
(82 - 87) 81 - 89
(50 - 55) 37 - 45
(23 - 28)
Half throttle 47 - 55
(29 - 34) 75 - 83
(47 - 52) 115 - 123
(71 - 76) 144 - 152
(89 - 94) 95 - 103
(59 - 64) 68 - 76
(42 - 47) 31 - 39
(19 - 24) 9 - 17
(6 -11)
Engine model VK45DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 62 - 70
(39 - 43) 98 - 106
(61 - 66) 153 - 161
(95 - 100) 220 - 228
(137 - 142) 216 - 224
(134 - 139) 137 - 145
(85 - 90) 85 - 93
(53 - 58) 39 - 47
(24 - 29)
Half throttle 29 - 37
(18 - 23) 59 - 67
(37 - 42) 101 - 109
(63 - 68) 161 - 169
(100 - 105) 108 - 116
(67 - 72) 66 - 74
(41 - 46) 38 - 46
(24 - 29) 22 - 30
(14 - 19)

TROUBLE DIAGNOSIS AT-63
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Revision: 2005 July 2005 FX
Vehicle Speed at Which Lock-up Occurs/ReleasesACS002M5
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.
AWD 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 position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 65 - 73 (40 - 45) 62 - 70 (39 - 43)
Half throttle 196 - 204 (122 - 127) 153 - 161 (95 - 100)
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 59 - 67 (37 - 42) 56 - 64 (35 - 40)
Half throttle 178 - 186 (111 - 116) 139 - 147 (86 - 91)
Engine model VK45DE
Throttle position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 66 - 74 (41 - 46) 53 - 61 (33 - 38)
Half throttle 191 - 199 (119 - 124) 136 - 144 (85 - 89)

AT-64
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Symptom ChartACS0080Q

The diagnostics item numbers show the sequence for inspection. Check in order from Item 1.

Overhaul and check inside the A/T only if A/T fluid condition is NG. Refer to AT- 5 2 , "A/T Fluid Condition
Check" .
No. Items Symptom Condition Diagnostic Item Reference
page
1 Shift
Shock Large shock. (“N”
→
“D” position)
Refer to AT-197,
"Large Shock (“N” to
“D” Position)" . ON vehicle 1. Engine idle speed
EC-83
(for
VQ35DE)
or EC-774

(for
VK45DE)
2. Engine speed signal AT- 1 2 3
3. Accelerator pedal position sensorAT- 1 3 3
4. Control linkage adjustmentAT- 2 3 5
5. A/T fluid temperature sensorAT- 1 3 6
6. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 5,
AT- 1 5 4
7. CAN communication line AT- 1 0 6
8. A/T fluid level and state AT- 5 2
9. Line pressure testAT- 5 4
10. Control valve with TCMAT- 2 4 3
OFF vehicle 11. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18, "Cross-Sectional View (2WD Models)" or AT- 1 9 , "Cross-
Sectional View (AWD Models)" ) AT- 2 9 0
2
Shock is too large
when changing D1 →
D
2 or M1 → M2 . ON vehicle 1. Accelerator pedal position sensor
AT- 1 3 3
2. Control linkage adjustmentAT- 2 3 5
3. ATF pressure switch 5 and direct clutch solenoid valve AT- 1 7 9,
AT- 1 5 8
4. CAN communication line AT- 1 0 6
5. Engine speed signalAT- 1 2 3
6. Turbine revolution sensorAT- 1 4 1
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
8. A/T fluid level and state AT- 5 2
9. Control valve with TCMAT- 2 4 3
OFF vehicle 10. Direct clutch AT- 3 2 6

TROUBLE DIAGNOSIS AT-65
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Revision: 2005 July 2005 FX
3
Shift
Shock Shock is too large
when changing D2 →
D
3 or M2 → M3 . ON vehicle 1. Accelerator pedal position sensor
AT-133
2. Control linkage adjustmentAT-235
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valve AT-181,
AT-162
4. CAN communication line AT-106
5. Engine speed signalAT-123
6. Turbine revolution sensorAT-141
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-143
8. A/T fluid level and state AT- 5 2
9. Control valve with TCMAT-243
OFF vehicle 10. High and low reverse clutch AT-323
4 Shock is too large
when changing D3 →
D
4 or M3 → M4 . ON vehicle 1. Accelerator pedal position sensor
AT-133
2. Control linkage adjustmentAT-235
3. ATF pressure switch 3 and input clutch solenoid valve AT-177,
AT-150
4. CAN communication line AT-106
5. Engine speed signalAT-123
6. Turbine revolution sensorAT-141
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-143
8. A/T fluid level and state AT- 5 2
9. Control valve with TCMAT-243
OFF vehicle 10. Input clutch AT-313
5 Shock is too large
when changing D4 →
D
5 or M4 → M5 . ON vehicle 1. Accelerator pedal position sensor
AT-133
2. Control linkage adjustmentAT-235
3. ATF pressure switch 1 and front brake solenoid valve AT-175,
AT-154

4. CAN communication line AT-106
5. Engine speed signalAT-123
6. Turbine revolution sensorAT-141
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-143
8. A/T fluid level and state AT- 5 2
9. Control valve with TCMAT-243
OFF vehicle 10. Front brake (brake band)
AT-27811. Input clutchAT-313
No. Items Symptom Condition Diagnostic Item Reference
page

AT-66
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
6
Shift
Shock Shock is too large for
downshift when accel-
erator pedal is
pressed. ON vehicle 1. Accelerator pedal position sensor
AT- 1 3 3
2. Control linkage adjustmentAT- 2 3 5
3. CAN communication lineAT- 1 0 6
4. Engine speed signalAT- 1 2 3
5. Turbine revolution sensorAT- 1 4 1
6. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
7. A/T fluid level and state AT- 5 2
8. Control valve with TCMAT- 2 4 3
OFF vehicle 9. Front brake (brake band)
AT- 2 7 810. Input clutch AT- 3 1 3
11. High and low reverse clutchAT- 3 2 3
12. Direct clutchAT- 3 2 6
7 Shock is too large for
upshift when acceler-
ator pedal is released. ON vehicle 1. Accelerator pedal position sensor
AT- 1 3 3
2. Control linkage adjustmentAT- 2 3 5
3. Engine speed signalAT- 1 2 3
4. CAN communication lineAT- 1 0 6
5. Turbine revolution sensorAT- 1 4 1
6. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
7. A/T fluid level and state AT- 5 2
8. Control valve with TCMAT- 2 4 3
OFF vehicle 9. Front brake (brake band)
AT- 2 7 810. Input clutch AT- 3 1 3
11. High and low reverse clutch AT- 3 2 3
12. Direct clutch AT- 3 2 6
8 Shock is too large for
lock-up. ON vehicle 1. Accelerator pedal position sensor
AT- 1 3 3
2. Control linkage adjustmentAT- 2 3 5
3. Engine speed signalAT- 1 2 3
4. CAN communication lineAT- 1 0 6
5. Turbine revolution sensorAT- 1 4 1
6. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
7. Torque converter clutch solenoid valve AT- 1 2 5
8. A/T fluid level and state AT- 5 2
9. Control valve with TCMAT- 2 4 3
OFF vehicle 10. Torque converter AT- 2 9 0
No. Items Symptom Condition Diagnostic Item Reference
page

TROUBLE DIAGNOSIS AT-67
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Revision: 2005 July 2005 FX9 Shift
Shock Shock is too large
during engine brake. ON vehicle
1. Accelerator pedal position sensor
AT-133
2. Control linkage adjustmentAT-235
3. CAN communication lineAT-106
4. A/T fluid level and state AT- 5 2
5. Control valve with TCMAT-243
OFF vehicle 6. Front brake (brake band)
AT-2787. Input clutch AT-313
8. High and low reverse clutchAT-323
9. Direct clutch AT-326
10
No Up
Shift Gear does not change
from D
1 → D2 or from
M
1 → M2 .
Refer to AT-208, "
A/T
Does Not Shift: D1 →
D2" . ON vehicle 1. A/T fluid level and state
AT- 5 2
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-143
3. ATF pressure switch 5 and direct clutch solenoid valve AT-179,
AT-158
4. Line pressure test AT- 5 4
5. CAN communication lineAT-106
6. Control valve with TCMAT-243
OFF vehicle 7. Direct clutch AT-326
11 Gear does not change
from D
2 → D3 or from
M
2 → M3 .
Refer to AT-210, "
A/T
Does Not Shift: D2 →
D3" . ON vehicle 1. A/T fluid level and state
AT- 5 2
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-143
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valve AT-181,
AT-162
4. Line pressure test AT- 5 4
5. CAN communication lineAT-106
6. Control valve with TCMAT-243
OFF vehicle 7. High and low reverse clutch AT-323
12 Gear does not change
from D
3 → D4 or from
M
3 → M4 .
Refer to AT-212, "
A/T
Does Not Shift: D3 →
D4" . ON vehicle 1. A/T fluid level and state
AT- 5 2
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-143
3. ATF pressure switch 3 and input clutch solenoid valve AT-177,
AT-150
4. ATF pressure switch 1 and front brake solenoid valve AT-175,
AT-154
5. Line pressure test AT- 5 4
6. CAN communication lineAT-106
7. Control valve with TCMAT-243
OFF vehicle 8. Input clutch AT-313
No. Items Symptom Condition Diagnostic Item Reference
page