2008 INFINITI FX35 torque

TROUBLE DIAGNOSISAT-79
< SERVICE INFORMATION >
DE
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M A
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AT
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53
Others Shift point is low in “D”
position.
ON vehicle1. Vehicle speed sensor A/T and vehicle speed sensor MTR
AT- 1 0 8
,
AT- 1 3 7
2. Accelerator pedal position sensor AT- 1 3 0
3. CAN communication line AT- 9 4
4. Control valve with TCMAT- 2 1 5
54Judder occurs during
lock-up. ON vehicle1. A/T fluid level and state
AT- 4 9
2. Engine speed signalAT- 11 2
3. Turbine revolution sensorAT- 1 0 6
4. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 7
5. Accelerator pedal position sensor AT- 1 3 0
6. CAN communication line AT- 9 4
7. Torque converter clutch solenoid valveAT- 1 2 4
8. Control valve with TCMAT- 2 1 5
OFF vehicle 9. Torque converter AT- 2 6 7
55Strange noise in “R”
position. ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Engine speed signalAT- 11 2
3. CAN communication line AT- 9 4
4. Control valve with TCMAT- 2 1 5
OFF vehicle5. Torque converter
AT- 2 6 7
6. Oil pump assemblyAT- 2 8 5
7. Gear systemAT- 2 4 9
8. High and low reverse clutchAT- 3 0 1
9. Reverse brakeAT- 2 6 7
56Strange noise in “N”
position. ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Engine speed signalAT- 11 2
3. CAN communication line AT- 9 4
4. Control valve with TCMAT- 2 1 5
OFF vehicle5. Torque converter
AT- 2 6 76. Oil pump assemblyAT- 2 8 5
7. Gear systemAT- 2 4 9
No. Items Symptom Condition Diagnostic Item Reference
page
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AT-80
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
57Others Strange noise in “D”
position.
ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Engine speed signalAT- 11 2
3. CAN communication line AT- 9 4
4. Control valve with TCMAT- 2 1 5
OFF vehicle5. Torque converter
AT- 2 6 7
6. Oil pump assemblyAT- 2 8 5
7. Gear systemAT- 2 4 9
8. Forward brake (Parts behind drum support is impossible to
perform inspection by disassembly. Refer to AT- 1 6 , "
Cross-
Sectional View (2WD Models)", AT- 1 7 , "Cross-Sectional View
(VQ35DE Models for AWD)" or AT- 1 8 , "Cross-Sectional View
(VK45DE Models for AWD)") AT- 2 6 7
58Vehicle does not de-
celerate by engine
brake.
Refer to
AT- 2 0 2 , "Ve-
hicle Does Not Decel-
erate by Engine
Brake". ON vehicle
1. PNP switch
AT- 1 0 2
2. A/T fluid level and state AT- 4 9
3. A/T positionAT- 2 0 7
4. Manual mode switchAT- 1 5 5
5. CAN communication line AT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Input clutch
AT- 2 8 98. High and low reverse clutchAT- 3 0 1
9. Direct clutchAT- 3 0 3
59Engine brake does not
work M5
→ M4. ON vehicle 1. PNP switch
AT- 1 0 2
2. A/T fluid level and state AT- 4 9
3. A/T positionAT- 2 0 7
4. Manual mode switchAT- 1 5 5
5. CAN communication line AT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle 7. Front brake (brake band) AT- 2 6 7
60Engine brake does not
work M4
→ M3. ON vehicle 1. PNP switch
AT- 1 0 2
2. A/T fluid level and state AT- 4 9
3. A/T positionAT- 2 0 7
4. Manual mode switchAT- 1 5 5
5. CAN communication line AT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Front brake (brake band)
AT- 2 6 78. Input clutchAT- 2 8 9
No. Items Symptom Condition Diagnostic Item Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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TROUBLE DIAGNOSISAT-81
< SERVICE INFORMATION >
DE
F
G H
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M A
B
AT
N
O P61
Others Engine brake does not
work M3
→ M2. ON vehicle 1. PNP switch
AT- 1 0 2
2. A/T fluid level and state AT- 4 9
3. A/T positionAT- 2 0 7
4. Manual mode switchAT- 1 5 5
5. CAN communication line AT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Front brake (brake band)
AT- 2 6 78. Input clutchAT- 2 8 9
9. High and low reverse clutchAT- 3 0 1
62Engine brake does not
work M2
→ M1. ON vehicle 1. PNP switch
AT- 1 0 2
2. A/T fluid level and state AT- 4 9
3. A/T positionAT- 2 0 7
4. Manual mode switchAT- 1 5 5
5. CAN communication line AT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Input clutch
AT- 2 8 98. High and low reverse clutchAT- 3 0 1
9. Direct clutchAT- 3 0 3
63 Maximum speed low.ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Accelerator pedal position sensorAT- 1 3 0
4. CAN communication line AT- 9 4
5. Direct clutch solenoid valveAT- 1 4 7
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Torque converter
AT- 2 6 7
8. Oil pump assemblyAT- 2 8 5
9. Input clutchAT- 2 8 9
10. Gear systemAT- 2 4 9
11. High and low reverse clutchAT- 3 0 1
12. Direct clutchAT- 3 0 3
13. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to AT-
16, "Cross-Sectional View (2WD Models)", AT- 1 7 , "Cross-
Sectional View (VQ35DE Models for AWD)" or AT- 1 8 , "Cross-
Sectional View (VK45DE Models for AWD)") AT- 2 6 7
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
AT- 1 6 , "
Cross-
Sectional View (2WD Models)", AT- 1 7 , "Cross-Sectional View
(VQ35DE Models for AWD)" or AT- 1 8 , "Cross-Sectional View
(VK45DE Models for AWD)") AT- 2 6 7
No. Items Symptom Condition Diagnostic Item
Reference
page
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AT-82
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
64Others Extremely large creep.
ON vehicle1. Engine idle speed EC-84
(for
VQ35DE)
or EC-661

(for
VK45DE)
2. CAN communication line AT- 9 4
OFF vehicle 3. Torque converter AT- 2 6 7
65With selector lever in
“P” position, vehicle
does not enter parking
condition or, with se-
lector lever in another
position, parking con-
dition is not cancelled.
Refer to
AT- 1 7 1 , "
In
"P" Position, Vehicle
Moves When
Pushed". ON vehicle
1. PNP switch
AT- 1 0 2
2. A/T positionAT- 2 0 7
OFF vehicle 3. Parking pawl components AT-
226(2WD
models) or AT- 2 6 7

(AWD
models)
66 Vehicle runs with A/T
in “P” position. ON vehicle
1. PNP switch
AT- 1 0 2
2. A/T fluid level and state AT- 4 9
3. A/T positionAT- 2 0 7
4. Control valve with TCMAT- 2 1 5
OFF vehicle5. Parking pawl components AT-
226(2WD
models) or AT- 2 6 7

(AWD
models)
6. Gear system AT- 2 4 9
67Vehicle runs with A/T
in “N” position.
Refer to
AT- 1 7 2 , "In
"N" Position, Vehicle
Moves". ON vehicle
1. PNP switch
AT- 1 0 2
2. A/T fluid level and state AT- 4 9
3. A/T positionAT- 2 0 7
4. Control valve with TCMAT- 2 1 5
OFF vehicle5. Input clutch
AT- 2 8 9
6. Gear systemAT- 2 4 9
7. Direct clutchAT- 3 0 3
8. Reverse brakeAT- 2 6 7
9. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to AT-
16, "Cross-Sectional View (2WD Models)", AT- 1 7 , "Cross-
Sectional View (VQ35DE Models for AWD)" or AT- 1 8 , "Cross-
Sectional View (VK45DE Models for AWD)") AT- 2 6 7
10. Low coast brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
AT- 1 6 , "
Cross-
Sectional View (2WD Models)", AT- 1 7 , "Cross-Sectional View
(VQ35DE Models for AWD)" or AT- 1 8 , "Cross-Sectional View
(VK45DE Models for AWD)") AT- 2 6 7
No. Items Symptom Condition Diagnostic Item
Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISAT-83
< SERVICE INFORMATION >
DE
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TCM Input/Output Signal Reference ValueINFOID:0000000001327162
A/T ASSEMBLY HARNESS CONNECTOR TERMINAL LAYOUT
TCM INSPECTION TABLE
68
Others Engine does not start
in “N” or “P” position.
Refer to
AT- 1 7 0 , "En-
gine Cannot Be Start-
ed in "P" or "N"
Position". ON vehicle
1. Ignition switch and starter
PG-3
,
SC-
8
2. A/T position AT- 2 0 7
3. PNP switchAT- 1 0 2
69Engine starts in posi-
tions other than “N” or
“P”. ON vehicle1. Ignition switch and starter
PG-3
,
SC-
8
2. A/T position AT- 2 0 7
3. PNP switchAT- 1 0 2
70 Engine stall.ON vehicle1. A/T fluid level and state
AT- 4 9
2. Engine speed signalAT- 11 2
3. Turbine revolution sensorAT- 1 0 6
4. Torque converter clutch solenoid valveAT- 1 2 4
5. CAN communication line AT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle 7. Torque converter AT- 2 6 7
71Engine stalls when se-
lector lever shifted “N”
→
“D”, “R”. ON vehicle1. A/T fluid level and state
AT- 4 9
2. Engine speed signalAT- 11 2
3. Turbine revolution sensorAT- 1 0 6
4. Torque converter clutch solenoid valveAT- 1 2 4
5. CAN communication line AT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle 7. Torque converter AT- 2 6 7
72Engine speed does
not return to idle.
Refer to
AT- 1 9 4 , "En-
gine Speed Does Not
Return to Idle". ON vehicle 1. A/T fluid level and state
AT- 4 9
2. Direct clutch solenoid valveAT- 1 4 7
3. Front brake solenoid valve AT- 1 4 5
4. Accelerator pedal position sensorAT- 1 3 0
5. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 3 7
6. CAN communication line AT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Front brake (brake band)
AT- 2 6 79. Direct clutchAT- 3 0 3
No. Items Symptom Condition Diagnostic Item Reference
page
SCIA1658E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AT-88
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.
DATA MONITOR MODE
Display Items List
X: Standard, —: Not applicable, : Option
Monitored item (Unit)Select Monitor Item
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
VHCL/S SE-A/T (km/h) X X Revolution sensor
VHCL/S SE-MTR (km/h) X —
ACCELE POSI (0.0/8) X — Accelerator pedal position signal
THROTTLE POSI (0.0/8) X X Degree of opening for accelerator recognized by
the TCM
For fail-safe operation, the specific value used
for control is displayed.
CLSD THL POS (ON/OFF) X — Signal input with CAN communications
W/O THL POS (ON/OFF) X —
BRAKE SW (ON/OFF) X — Stop lamp switch
GEAR — X Gear position recognized by the TCM updated
after gear-shifting
ENGINE SPEED (rpm) X X
TURBINE REV (rpm) X X
OUTPUT REV (rpm) X X
GEAR RATIO — X
TC SLIP SPEED (rpm) — X Difference between engine speed and torque
converter input shaft speed
F SUN GR REV (rpm) — —
F CARR GR REV (rpm) — —
ATF TEMP SE 1 (V) X —
ATF TEMP SE 2 (V) X —
ATF TEMP 1 ( °C) — X
ATF TEMP 2 ( °C) — X
BATTERY VOLT (V) X —
ATF PRES SW 1 (ON/OFF) X X (for FR/B solenoid)
ATF PRES SW 2 (ON/OFF) X X (for LC/B solenoid)
ATF PRES SW 3 (ON/OFF) X X (for I/C solenoid)
ATF PRES SW 5 (ON/OFF) X X (for D/C solenoid)
ATF PRES SW 6 (ON/OFF) X X (for HLR/C solenoid)
PNP SW 1 (ON/OFF) X —
PNP SW 2 (ON/OFF) X —
PNP SW 3 (ON/OFF) X —
PNP SW 4 (ON/OFF) X —
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AT-92
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
1.CHECK A/T CHECK INDICATOR LAMP
1. Start the engine with selector lever in “P” pos ition. Warm engine to normal operating temperature.
2. Turn ignition switch ON and OFF at least twice, then leave it in the OFF position.
3. Wait 10 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?
YES >> GO TO 2.
NO >> Go to AT-170, "
A/T Check Indicator Lamp Does Not Come On".
2.JUDGEMENT PROCEDURE
1. Turn ignition switch OFF.
2. Keep pressing shift lock release button.
3. Move selector lever from “P” to “D” position.
4. Release accelerator pedal. (Set the closed throttle position signal ON.)
5. Depress brake pedal. (Stop lamp switch signal ON.)
6. Turn ignition switch ON. (Do not start engine.)
7. Wait 3 seconds.
8. Move the selector lever to the manual shift gate side. (Manual mode signal ON.)
9. Release brake pedal. (Stop lamp switch signal OFF.)
10. Move the selector lever to “D” position. (Manual mode signal OFF.)
11. Depress brake pedal. (Stop lamp switch signal ON.)
12. Release brake pedal. (Stop lamp switch signal OFF.)
13. Depress accelerator pedal fully and release it.
>> GO TO 3.
3.CHECK SELF-DIAGNOSIS CODE
Check A/T CHECK indicator lamp. Refer to "Judgement Self-diagnosis Code".
If the system does not go into self-diagnostics. Refer to AT-102
, AT-155, AT-164, AT-165.
>> DIAGNOSIS END
Judgement Self-diagnosis Code
If there is a malfunction, the lamp lights up fo r the time corresponding to the suspect circuit.
No. Malfunctioning item No. Malfunctioning item
1 Revolution sensor AT- 1 0 8
12 A/T interlock AT- 1 3 9
2 Direct clutch solenoid valve AT- 1 4 713 A/T 1st engine braking AT-141
3 Torque converter clutch solenoid valve AT- 1 2 4, AT- 1 2 614 Start signal AT- 9 7
4 Line pressure solenoid valve AT- 1 2 815 Accelerator pedal position sensor AT- 1 3 0
5 Input clutch solenoid valve AT- 1 4 316 Engine speed signal AT- 11 2
6 Front brake solenoid valve AT- 1 4 517 CAN communication line AT- 9 4
7 Low coast brake solenoid valve AT- 1 5 1, AT- 1 5 318 1st gear function AT- 11 4
8 High and low reverse clutch solenoid valve AT- 1 4 919 2nd gear function AT- 11 6
9 PNP switch AT- 1 0 220 3rd gear function AT- 11 8
10 A/T fluid temperature sensor AT-13221 4th gear function AT- 1 2 0
11 Turbine revolution sensor AT- 1 0 622 5th gear function AT- 1 2 2
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AT-124
< SERVICE INFORMATION >
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
DescriptionINFOID:0000000001327209
 The torque converter clutch solenoid va lve is activated, with the gear in D5, M3, M4 and M5 by the TCM in
response to signals sent from the vehicle speed sensor and accelerator pedal position sensor (throttle posi-
tion 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-III Reference Value in Data Monitor ModeINFOID:0000000001327210
On Board Diagnosis LogicINFOID:0000000001327211
Diagnostic trouble code “P0740 TCC SOLENOID/CIRC” with CONSULT-III or 3rd judgement flicker without
CONSULT-III 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 CauseINFOID:0000000001327212
 Torque converter clutch solenoid valve
 Harness or connectors (Solenoid circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000001327213
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 proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON.
2. Select “SELECTION FROM MENU” in “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III
and check monitor “VHCL/S SE-A/T”, “ACCELE POSI” and “SLCT LVR POSI”.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 5 consecutive seconds. VHCL/S SE-A/T: 80 km/h (50 MPH) or more
ACCELE POSI: 0.5/8 - 1.0/8
SLCT LVR POSI: “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-124, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis ProcedureINFOID:0000000001327214
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch ON.
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
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