2004 INFINITI FX35 clutch

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX4561
OthersEngine brake does
not work M3 → M2 .ON vehicle1. PNP switchAT- 11 2
2. Fluid level and stateAT- 5 1
3. Control linkage adjustmentAT-234
4. Manual mode switchAT-172
5. ATF pressure switch 6AT-184
6. CAN communication lineAT-105
7. Control valve with TCMAT-242
OFF vehicle8. Front brake (brake band)AT-2869. Input clutchAT-308
10. High and low reverse clutchAT-320
62Engine brake does
not work M2 → M1 .ON vehicle1. PNP switchAT- 11 2
2. Fluid level and stateAT- 5 1
3. Control linkage adjustmentAT-234
4. Manual mode switchAT-172
5. ATF pressure switch 5AT-182
6. CAN communication lineAT-105
7. Control valve with TCMAT-242
OFF vehicle8. Input clutchAT-3089. High and low reverse clutchAT-320
10. Direct clutchAT-323
63 Maximum speed low.ON vehicle1. Fluid level and stateAT- 5 1
2. Line pressure testAT- 5 2
3. Accelerator pedal position sensorAT-136
4. CAN communication lineAT-105
5. Direct clutch solenoid valveAT-160
6. Control valve with TCMAT-242
OFF vehicle7. Torque converter AT-286
8. Oil pump assemblyAT-303
9. Input clutchAT-308
10. Gear systemAT-274
11. High and low reverse clutchAT-320
12. Direct clutchAT-323
13. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 7 , "
Cross-Sectional View (2WD Models)" or AT- 1 8 ,
"Cross-Sectional View (AWD Models)" )AT-286
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-Sectional View (2WD Models)" or AT-18, "Cross-
Sectional View (AWD Models)" )AT-286
No. Items Symptom Condition Diagnostic ItemReference
page

AT-88
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
64
OthersExtremely large
creep.ON vehicle1. Engine idle speed EC-37
(for
VQ35DE)
or EC-685

(for
VK45DE)
2. CAN communication lineAT- 1 0 5
3. ATF pressure switch 5AT- 1 8 2
OFF vehicle 4. Torque converterAT- 2 8 6
65With 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-193, "
In
“P” Position, Vehicle
Moves When Pushed"
.ON vehicle1. PNP switchAT- 11 2
2. Control linkage adjustmentAT- 2 3 4
OFF vehicle 3. Parking pawl componentsAT-
253(2WD
models) or
AT- 2 8 6

(AWD
models)
66Vehicle runs with
transmission in P
position.ON vehicle1. PNP switchAT- 11 2
2. Fluid level and stateAT- 5 1
3. Control linkage adjustmentAT- 2 3 4
4. Control valve with TCMAT- 2 4 2
OFF vehicle5. Parking pawl componentsAT-
253(2WD
models) or
AT- 2 8 6

(AWD
models)
6. Gear systemAT- 2 7 4
67Vehicle runs with
transmission in N
position.
Refer to AT-194, "In
“N” Position, Vehicle
Moves" .ON vehicle1. PNP switchAT- 11 2
2. Fluid level and stateAT- 5 1
3. Control linkage adjustmentAT- 2 3 4
4. Control valve with TCMAT- 2 4 2
OFF vehicle5. Input clutchAT- 3 0 8
6. Gear systemAT- 2 7 4
7. Direct clutchAT- 3 2 3
8. Reverse brakeAT- 2 8 6
9. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT-17, "
Cross-Sectional View (2WD Models)" or AT-18,
"Cross-Sectional View (AWD Models)" )AT- 2 8 6
10. Low coast brake (Parts behind drum support is impossi-
ble to perform inspection by disassembly. Refer to AT- 1 7 ,
"Cross-Sectional View (2WD Models)" or AT- 1 8 , "Cross-
Sectional View (AWD Models)" )AT- 2 8 6
No. Items Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
68
OthersEngine does not start
in N or P position.
Refer to AT-193, "Engine Cannot Be
Started In “P” or “N”
Position" .ON vehicle1. Ignition switch and starterPG-3
, SC-
10
2. Control linkage adjustmentAT-234
3. PNP switchAT- 11 2
69Engine starts in posi-
tions other than N or
P.ON vehicle1. Ignition switch and starterPG-3
, SC-
10
2. Control linkage adjustmentAT-234
3. PNP switchAT- 11 2
70 Engine stall.ON vehicle1. Fluid level and stateAT- 5 1
2. Engine speed signalAT-121
3. Turbine revolution sensorAT-143
4. Torque converter clutch solenoid valveAT-123
5. CAN communication lineAT-105
6. Control valve with TCMAT-242
OFF vehicle 7. Torque converterAT-286
71Engine stalls when
select lever shifted N
→ D, R.ON vehicle1. Fluid level and stateAT- 5 1
2. Engine speed signalAT-121
3. Turbine revolution sensorAT-143
4. Torque converter clutch solenoid valveAT-123
5. CAN communication lineAT-105
6. Control valve with TCMAT-242
OFF vehicle 7. Torque converterAT-286
72Engine speed does
not return to idle.
Refer to AT-221,
"Engine Speed Does
Not Return To Idle" .ON vehicle1. Fluid level and stateAT- 5 1
2. ATF pressure switch 5 and direct clutch solenoid valveAT-182,
AT-160

3. ATF pressure switch 1 and front brake solenoid valveAT-178
,
AT-156
4. Accelerator pedal position sensorAT-136
5. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
6. CAN communication lineAT-105
7. Control valve with TCMAT-242
OFF vehicle8. Front brake (brake band)AT-2869. Direct clutchAT-323
No. Items Symptom Condition Diagnostic ItemReference
page

AT-92
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
ATF PRES SW 2Low coast brake engaged. Refer to AT- 2 0 .ON
Low coast brake disengaged. Refer to AT- 2 0
.OFF
ATF PRES SW 3Input clutch engaged. Refer to AT- 2 0
.ON
Input clutch disengaged. Refer to AT- 2 0
.OFF
ATF PRES SW 5Direct clutch engaged. Refer to AT- 2 0
.ON
Direct clutch disengaged. Refer to AT- 2 0
.OFF
ATF PRES SW 6High and low reverse clutch engaged. Refer to AT- 2 0
.ON
High and low reverse clutch disengaged Refer to AT- 2 0
.OFF
I/C SOLENOIDInput clutch disengaged. Refer to AT- 2 0
. 0.6 - 0.8 A
Input clutch engaged. Refer to AT- 2 0
. 0 - 0.05 A
FR/B SOLENOIDFront brake engaged. Refer to AT- 2 0
. 0.6 - 0.8 A
Front brake disengaged. Refer to AT- 2 0
. 0 - 0.05 A
D/C SOLENOIDDirect clutch disengaged. Refer to AT- 2 0
. 0.6 - 0.8 A
Direct clutch engaged. Refer to AT- 2 0
. 0 - 0.05 A
HLR/C SOLHigh and low reverse clutch disengaged. Refer to AT- 2 0
. 0.6 - 0.8 A
High and low reverse clutch engaged. Refer to AT- 2 0
. 0 - 0.05 A
ON OFF SOLLow coast brake engaged. Refer to AT- 2 0
.ON
Low coast brake disengaged. Refer to AT- 2 0
.OFF
MANU MODE SWManual shift gate position (neutral) ON
Other than the above OFF
NON M-MODE SWManual shift gate position OFF
Other than the above ON
UP SW LEVERSelector lever: + side ON
Other than the above OFF
DOWN SW LEVERSelector lever: - side ON
Other than the above OFF
STARTER RELAYSelector lever in N and P position. ON
Selector lever in other positions. OFF
ACCELE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
THROTTLE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
CLSD THL POSReleased accelerator pedal. ON
Fully depressed accelerator pedal. OFF
W/O THL POSFully depressed accelerator pedal. ON
Released accelerator pedal. OFF
BRAKE SWDepressed brake pedal. ON
Released brake pedal. OFF Item name Condition Display value (Approx.)

DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
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Revision: 2004 November 2004 FX35/FX45
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVEPFP:31940
DescriptionACS007BI

The torque converter clutch solenoid valve is activated, with the gear in D4 , D5 by the TCM in response
to signals sent from the vehicle speed sensor and accelerator pedal position sensor (throttle position sen-
sor). 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 1/8) 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 ValueACS007BJ
On Board Diagnosis LogicACS007BK

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “TCC SOLENOID/CIRC” with CONSULT-II or P0740 without 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 CauseACS007BL

Torque converter clutch solenoid valve

Harness or connectors
(Solenoid circuit is open or shorted.)
DTC Confirmation ProcedureACS007BM
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 “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. 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.
4. If DTC is detected go to AT- 1 2 4 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “With CONSULT-II”.
Item name Condition Display value (Approx.)
TCC SOLENOIDWhen performing slip lock-up 0.2 - 0.4 A
When performing lock-up 0.4 - 0.6 A
SAT014K

AT-124
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureACS007BN
1. CHECK INPUT SIGNALS
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 the engine.
4. Read out the value of “TCC SOLENOID” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 9 4 , "
SELF-DIAGNOSTIC RESULT MODE" .
Do the self-diagnostic results indicate
“TCM-POWER SUPPLY”?
YES >> Check the TCM power circuit. Refer to AT- 1 2 9 , "DTC P1701 TRANSMISSION CONTROL MOD-
ULE (POWER SUPPLY)" .
NO >> GO TO 3.
3. DETECT MALFUNCTIONING ITEM
Check the following items:

The A/T assembly harness connector terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 4 2 , "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 3 , "DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value (Approx.)
TCC SOLENOIDWhen performing slip lock-up 0.2 - 0.4 A
When performing lock-up 0.4 - 0.6 A
SCIA4793E

DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
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Revision: 2004 November 2004 FX35/FX45
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)PFP:31940
DescriptionACS007BO
This malfunction is detected when the A/T does not shift into 5th gear position or the torque converter clutch
does not lock-up as instructed by the TCM. This is not only caused by electrical malfunction (circuits open or
shorted) but also by mechanical malfunction such as control valve sticking, improper solenoid valve operation,
etc.
CONSULT-II Reference ValueACS007BP
On Board Diagnosis LogicACS007BQ

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “A/T TCC S/V FNCTN” with CONSULT-II or P0744 without CONSULT-II is
detected under the following conditions.
–When A/T cannot perform lock-up even if electrical circuit is good.
–When TCM detects as irregular by comparing reference value with slip rotation.
Possible CauseACS007BR

Harness or connectors
(Solenoid circuit is open or shorted.)

Torque converter clutch solenoid valve

Hydraulic control circuit
DTC Confirmation ProcedureACS007BS
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. Start engine and Select “TCC SOL FUNCTN CHECK” of “DTC
WORK SUPPORT” mode for “A/T” with CONSULT-II and touch
“START”.
2. Accelerate vehicle to more than 80 km/h (50 MPH) and maintain
the following condition continuously until “TESTING” has turned
to “COMPLETE”. (It will take approximately 30 seconds after
“TESTING” shows.)
ACCELE POSI: More than 1.0/8 (at all times during step 4)
TCC SOLENOID: 0.4 - 0.6 A
Selector lever: “D” position
[Reference speed: Constant speed of more than 80 km/h (50
MPH)]
–Make sure “GEAR” shows “5”.
–For shift schedule, refer to AT- 3 4 9 , "Vehicle Speed When Performing and Releasing Complete
Lock-up" .
–If “TESTING” does not appear on CONSULT-II for a long time, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0744 is shown, refer to applicable “TROUBLE DIAGNOSIS FOR
DTC”.
3. Make sure that “OK” is displayed. (If “NG” is displayed, refer to “DIAGNOSTIC PROCEDURE”.)
Refer to AT- 1 2 6 , "
Diagnostic Procedure" .
Refer to shift schedule, AT- 3 4 9 , "
Vehicle Speed When Performing and Releasing Complete Lock-up" .
Item name Condition Display value (Approx.)
TCC SOLENOIDWhen performing slip lock-up 0.2 - 0.4 A
When performing lock-up 0.4 - 0.6 A
SAT014K

AT-148
DTC P1730 A/T INTERLOCK
Revision: 2004 November 2004 FX35/FX45
A/T INTERLOCK COUPLING PATTERN TABLE

: NG, X: OK
Diagnostic ProcedureACS007DG
1. SELF-DIAGNOSIS
With CONSULT-II
1. Drive vehicle.
2. Stop vehicle and turn ignition switch “OFF”.
3. Turn ignition switch “ON”. (Do not start engine.)
4. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II.
Without CONSULT-II
1. Drive vehicle.
2. Stop vehicle and turn ignition switch “OFF”.
3. Turn ignition switch “ON”. (Do not start engine.)
4. Perform self-diagnosis. Refer to AT- 1 0 3 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" .
OK or NG
OK >> GO TO 2.
NG >> Check low coast brake solenoid valve circuit and function. Refer to AT- 1 6 8 , "
DTC P1772 LOW
COAST BRAKE SOLENOID VALVE" , AT- 1 7 0 , "DTC P1774 LOW COAST BRAKE SOLENOID
VALVE FUNCTION" .
2. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 4 7 , "DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
3. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 9 4 , "
SELF-DIAGNOSTIC RESULT MODE" .
Do the self-diagnostic results indicate
“TCM-POWER SUPPLY”?
YES >> Check the TCM power circuit. Refer to AT- 1 2 9 , "DTC P1701 TRANSMISSION CONTROL MOD-
ULE (POWER SUPPLY)" .
NO >> GO TO 4.
Gear positionATF pressure switch output
Fail-safe
functionClutch pressure output pattern after fail-safe func-
tion
SW3
(I/C)SW6
(HLR/
C)SW5
(D/C)SW1
(FR/B)SW2
(LC/B)I/C HLR/C D/C FR/B LC/B L/U
A/T interlock
coupling pat-
tern3rd – X X –
Held in
2nd gearOFF OFF ON OFF OFF OFF
4th – X X –
Held in
2nd gearOFF OFF ON OFF OFF OFF
5th X X – X
Held in
2nd gearOFF OFF ON OFF OFF OFF
SAT014K