2005 INFINITI FX35 clutch

TROUBLE DIAGNOSIS AT-85
D E
F
G H
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K L
M A
B
AT
Revision: 2005 July 2005 FX57
Others Strange noise in “D”
position. ON vehicle
1. A/T fluid level and state
AT- 5 2
2. Engine speed signalAT-123
3. CAN communication lineAT-106
4. Control valve with TCMAT-243
OFF vehicle 5. Torque converter
AT-290
6. Oil pump assemblyAT-308
7. Gear systemAT-278
8. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-Sectional View (2WD Models)" or AT-19, "Cross-
Sectional View (AWD Models)" ) AT-290
58 Vehicle does not
decelerate by engine
brake.
Refer to AT-231,
"Vehicle Does Not
Decelerate by Engine
Brake" . ON vehicle
1. PNP switch
AT- 11 4
2. A/T fluid level and state AT- 5 2
3. Control linkage adjustmentAT-235
4. Manual mode switchAT-170
5. ATF pressure switch 5AT-179
6. CAN communication lineAT-106
7. Control valve with TCMAT-243
OFF vehicle 8. Input clutch
AT-3139. High and low reverse clutchAT-323
10. Direct clutchAT-326
59 Engine brake does
not work M5 → M4. ON vehicle 1. PNP switch
AT- 11 4
2. A/T fluid level and state AT- 5 2
3. Control linkage adjustmentAT-235
4. Manual mode switchAT-170
5. ATF pressure switch 1AT-175
6. CAN communication lineAT-106
7. Control valve with TCMAT-243
OFF vehicle 8. Front brake (brake band) AT-290
60 Engine brake does
not work M4 → M3. ON vehicle 1. PNP switch
AT- 11 4
2. A/T fluid level and state AT- 5 2
3. Control linkage adjustmentAT-235
4. Manual mode switchAT-170
5. ATF pressure switch 1 and ATF pressure switch 3 AT-175,
AT-177
6. CAN communication line AT-106
7. Control valve with TCMAT-243
OFF vehicle 8. Front brake (brake band)
AT-2909. Input clutchAT-313
No. Items Symptom Condition Diagnostic Item Reference
page

AT-86
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
61
Others Engine brake does
not work M3 → M2. ON vehicle 1. PNP switch
AT- 11 4
2. A/T fluid level and state AT- 5 2
3. Control linkage adjustmentAT- 2 3 5
4. Manual mode switchAT- 1 7 0
5. ATF pressure switch 6AT- 1 8 1
6. CAN communication lineAT- 1 0 6
7. Control valve with TCMAT- 2 4 3
OFF vehicle 8. Front brake (brake band)
AT- 2 9 09. Input clutchAT- 3 1 3
10. High and low reverse clutchAT- 3 2 3
62 Engine brake does
not work M2 → M1. ON vehicle 1. PNP switch
AT- 11 4
2. A/T fluid level and state AT- 5 2
3. Control linkage adjustmentAT- 2 3 5
4. Manual mode switchAT- 1 7 0
5. ATF pressure switch 5AT- 1 7 9
6. CAN communication lineAT- 1 0 6
7. Control valve with TCMAT- 2 4 3
OFF vehicle 8. Input clutch
AT- 3 1 39. High and low reverse clutchAT- 3 2 3
10. Direct clutchAT- 3 2 6
63 Maximum speed low. ON vehicle
1. A/T fluid level and state
AT- 5 2
2. Line pressure testAT- 5 4
3. Accelerator pedal position sensorAT- 1 3 3
4. CAN communication lineAT- 1 0 6
5. Direct clutch solenoid valveAT- 1 5 8
6. Control valve with TCMAT- 2 4 3
OFF vehicle 7. Torque converter
AT- 2 9 0
8. Oil pump assemblyAT- 3 0 8
9. Input clutchAT- 3 1 3
10. Gear systemAT- 2 7 8
11. High and low reverse clutchAT- 3 2 3
12. Direct clutchAT- 3 2 6
13. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT-18, "
Cross-Sectional View (2WD Models)" or AT-19,
"Cross-Sectional View (AWD Models)" ) AT- 2 9 0
14. 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
No. Items Symptom Condition Diagnostic Item
Reference
page

TROUBLE DIAGNOSIS AT-87
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2005 July 2005 FX
64
Others Extremely large
creep. ON vehicle 1. Engine idle speed EC-83
(for
VQ35DE)
or EC-774

(for
VK45DE)
2. CAN communication line AT-106
3. ATF pressure switch 5AT-179
OFF vehicle 4. Torque converter AT-290
65 With selector lever in
“P” position, vehicle
does not enter parking
condition or, with
selector lever in
another position, park-
ing condition is not
cancelled.
Refer to AT-195, "
In
“P” Position, Vehicle
Moves When Pushed"
. ON vehicle
1. PNP switch
AT- 11 4
2. Control linkage adjustmentAT-235
OFF vehicle 3. Parking pawl components AT-
255(2WD
models) or AT-290

(AWD
models)
66 Vehicle runs with
transmission in “P”
position. ON vehicle
1. PNP switch
AT- 11 4
2. A/T fluid level and state AT- 5 2
3. Control linkage adjustmentAT-235
4. Control valve with TCMAT-243
OFF vehicle 5. Parking pawl components AT-
255(2WD
models) or
AT-290

(AWD
models)
6. Gear system AT-278
67 Vehicle runs with
transmission in “N”
position.
Refer to AT-196, "In
“N” Position, Vehicle
Moves" . ON vehicle
1. PNP switch
AT- 11 4
2. A/T fluid level and state AT- 5 2
3. Control linkage adjustmentAT-235
4. Control valve with TCMAT-243
OFF vehicle 5. Input clutch
AT-313
6. Gear systemAT-278
7. Direct clutchAT-326
8. Reverse brakeAT-290
9. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 8 , "
Cross-Sectional View (2WD Models)" or AT- 1 9 ,
"Cross-Sectional View (AWD Models)" ) AT-290
10. Low coast brake (Parts behind drum support is impossi-
ble to perform inspection by disassembly. Refer to AT-18,
"Cross-Sectional View (2WD Models)" or AT-19, "Cross-
Sectional View (AWD Models)" ) AT-290
No. Items Symptom Condition Diagnostic Item
Reference
page

AT-88
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
68
Others Engine does not start
in “N” or “P” position.
Refer to AT-194, "Engine Cannot Be
Started in “P” or “N”
Position" . ON vehicle
1. Ignition switch and starter
PG-3
,
SC-
10
2. Control linkage adjustment AT- 2 3 5
3. PNP switch AT- 11 4
69 Engine starts in posi-
tions other than “N” or
“P”. ON vehicle 1. Ignition switch and starter
PG-3
,
SC-
10
2. Control linkage adjustment AT- 2 3 5
3. PNP switch AT- 11 4
70 Engine stall. ON vehicle 1. A/T fluid level and state
AT- 5 2
2. Engine speed signalAT- 1 2 3
3. Turbine revolution sensorAT- 1 4 1
4. Torque converter clutch solenoid valveAT- 1 2 5
5. CAN communication lineAT- 1 0 6
6. Control valve with TCMAT- 2 4 3
OFF vehicle 7. Torque converter AT- 2 9 0
71 Engine stalls when
selector lever shifted
“N” → “D”, “R”. ON vehicle 1. A/T fluid level and state
AT- 5 2
2. Engine speed signalAT- 1 2 3
3. Turbine revolution sensorAT- 1 4 1
4. Torque converter clutch solenoid valveAT- 1 2 5
5. CAN communication lineAT- 1 0 6
6. Control valve with TCMAT- 2 4 3
OFF vehicle 7. Torque converter AT- 2 9 0
72 Engine speed does
not return to idle.
Refer to AT-221,
"Engine Speed Does
Not Return to Idle" . ON vehicle 1. A/T fluid level and state
AT- 5 2
2. ATF pressure switch 5 and direct clutch solenoid valve AT- 1 7 9,
AT- 1 5 8

3. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 5
,
AT- 1 5 4
4. Accelerator pedal position sensor AT- 1 3 3
5. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
6. CAN communication line AT- 1 0 6
7. Control valve with TCMAT- 2 4 3
OFF vehicle 8. Front brake (brake band)
AT- 2 9 09. Direct clutchAT- 3 2 6
No. Items Symptom Condition Diagnostic Item Reference
page

TROUBLE DIAGNOSIS AT-91
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2005 July 2005 FX
FR/B SOLENOID Front brake engaged. Refer to
AT- 2 1 . 0.6 - 0.8 A
Front brake disengaged. Refer to AT- 2 1
. 0 - 0.05 A
I/C SOLENOID Input clutch disengaged. Refer to
AT- 2 1
. 0.6 - 0.8 A
Input clutch engaged. Refer to AT- 2 1
. 0 - 0.05 A
D/C SOLENOID Direct clutch disengaged. Refer to
AT- 2 1
. 0.6 - 0.8 A
Direct clutch engaged. Refer to AT- 2 1
. 0 - 0.05 A
HLR/C SOL High and low reverse clutch disengaged. Refer to
AT- 2 1
. 0.6 - 0.8 A
High and low reverse clutch engaged. Refer to AT- 2 1
. 0 - 0.05 A
STARTER RELAY Selector lever in “N”, “P” position. ON
Selector lever in other positions. OFF
SLCT LVR POSI Selector lever in “N”,“P” position. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
ON OFF SOL Low coast brake engaged. Refer to
AT- 2 1
.ON
Low coast brake disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 1 Front brake engaged. Refer to
AT- 2 1
.ON
Front brake disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 2 Low coast brake engaged. Refer to
AT- 2 1
.ON
Low coast brake disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 3 Input clutch engaged. Refer to
AT- 2 1
.ON
Input clutch disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 5 Direct clutch engaged. Refer to
AT- 2 1
.ON
Direct clutch disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 6 High and low reverse clutch engaged. Refer to
AT- 2 1
.ON
High and low reverse clutch disengaged Refer to AT- 2 1
.OFF
MANU MODE SW Manual shift gate position (neutral) ON
Other than the above OFF
NON M-MODE SW Manual shift gate position OFF
Other than the above ON
UP SW LEVER Selector lever: + side ON
Other than the above OFF
DOWN SW LEVER Selector lever: - side ON
Other than the above OFF
GEAR During driving 1, 2, 3, 4, 5 Item name Condition
Display value
(Approx.)

AT-104
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
4. CHECK SELF-DIAGNOSIS CODE
Check A/T CHECK indicator lamp. Refer to AT- 1 0 4 , "
Judgement Self-diagnosis Code" .
If the system does not go into self-diagnostics. Refer to AT- 11 4 , "
DTC P0705 PARK/NEUTRAL POSITION
SWITCH" , AT- 1 7 0 , "DTC P1815 MANUAL MODE SWITCH" , AT- 1 8 7 , "CLOSED THROTTLE POSITION AND
WIDE OPEN THROTTLE POSITION CIRCUIT" , AT- 1 8 8 , "BRAKE SIGNAL CIRCUIT" .
>> DIAGNOSIS END
Judgement Self-diagnosis Code
If there is a malfunction, the lamp lights up for the time corresponding to the suspect circuit.
No. Malfunctioning item No. Malfunctioning item
1 Revolution sensor AT- 11 8
10 A/T fluid temperature sensor AT-136
2 Direct clutch solenoid valve AT- 1 5 8 , AT- 1 6 011 Turbine revolution sensor AT-141
3 Torque converter clutch solenoid valve
AT- 1 2 5 , AT-
12712 A/T interlock AT-145
4 Line pressure solenoid valve AT- 1 2 913 A/T 1st engine braking AT- 1 4 8
5 Input clutch solenoid valve AT-150 , AT-15214 Start signal AT-109
6 Front brake solenoid valve AT-154 , AT-15615 Accelerator pedal position sensor AT-133
7 Low coast brake solenoid valve AT-166 , AT-16816 Engine speed signal AT-123
8 High and low reverse clutch solenoid valve
AT-162 ,
AT- 1 6 417 CAN communication line AT-106
9 PNP switch AT- 11 4
SCIA5767E

DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE AT-125
D E
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G H
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J
K L
M A
B
AT
Revision: 2005 July 2005 FX
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVEPFP:31940
DescriptionACS002N0

The torque converter clutch solenoid valve is activated, with the gear in D5 , M4 and M5 by the TCM in
response to signals sent from the vehicle speed sensor and accelerator pedal position sensor (throttle
position sensor). Torque converter clutch piston operation will then be controlled.

Lock-up operation, however, is prohibited when A/T fluid temperature is too low.

When the accelerator pedal is depressed (less than 1.0/8) in lock-up condition, the engine speed should
not change abruptly. If there is a big jump in engine speed, there is no lock-up.
CONSULT-II Reference ValueACS002N1
On Board Diagnosis LogicACS002N2

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0740 TCC SOLENOID/CIRC” with CONSULT-II or 3rd judgement flicker with-
out CONSULT-II is detected under the following conditions.
–When TCM detects an improper voltage drop when it tries to operate the solenoid valve.
–When TCM detects as irregular by comparing target value with monitor value.
Possible CauseACS002N3

Torque converter clutch solenoid valve

Harness or connectors
(Solenoid circuit is open or shorted.)
DTC Confirmation ProcedureACS002N4
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 5 consecutive seconds.
VHCL SPEED SE: 80 km/h (50 MPH) or more
ACCELE POSI: 0.5/8 - 1.0/8
SELECTOR LEVER: “D” position
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
5. If DTC is detected go to AT- 1 2 6 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value (Approx.)
TCC SOLENOID Slip lock-up is active 0.2 - 0.4 A
Lock-up is active 0.4 - 0.6 A
BCIA0031E

AT-126
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Revision: 2005 July 2005 FX
Diagnostic ProcedureACS002N5
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine.
4. Read out the value of “TCC SOLENOID” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT- 1 8 3 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. DETECT MALFUNCTIONING ITEM
Check the following.

The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 4 3 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Repair or replace damaged parts.
4. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 2 5 , "DTC Confirmation Procedure" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Item name Condition Display value (Approx.)
TCC SOLENOID Slip lock-up is active 0.2 - 0.4 A
Lock-up is active 0.4 - 0.6 A
SCIA4793E