2008 INFINITI FX35 lock

TROUBLE DIAGNOSISAT-61
< SERVICE INFORMATION >
DE
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G H
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M A
B
AT
N
O P
6
Shift
Shock Shock is too large for
downshift when accel-
erator pedal is
pressed.
ON vehicle1. Accelerator pedal position sensor
AT- 1 3 0
2. A/T positionAT- 2 0 7
3. CAN communication line AT- 9 4
4. Engine speed signalAT- 11 2
5. Turbine revolution sensorAT- 1 0 6
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 7
7. A/T fluid level and state AT- 4 9
8. Control valve with TCMAT- 2 1 5
OFF vehicle9. Front brake (brake band)
AT- 2 4 910. Input clutch AT- 2 8 9
11. High and low reverse clutchAT- 3 0 1
12. Direct clutchAT- 3 0 3
7Shock is too large for
upshift when accelera-
tor pedal is released. ON vehicle1. Accelerator pedal position sensor
AT- 1 3 0
2. A/T positionAT- 2 0 7
3. Engine speed signal AT- 11 2
4. CAN communication line AT- 9 4
5. Turbine revolution sensorAT- 1 0 6
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 7
7. A/T fluid level and state AT- 4 9
8. Control valve with TCMAT- 2 1 5
OFF vehicle9. Front brake (brake band)
AT- 2 4 910. Input clutch AT- 2 8 9
11. High and low reverse clutch AT- 3 0 1
12. Direct clutch AT- 3 0 3
8Shock is too large for
lock-up. ON vehicle1. Accelerator pedal position sensor
AT- 1 3 0
2. A/T positionAT- 2 0 7
3. Engine speed signal AT- 11 2
4. CAN communication line AT- 9 4
5. Turbine revolution sensorAT- 1 0 6
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 7
7. Torque converter clutch solenoid valve AT- 1 2 4
8. A/T fluid level and state AT- 4 9
9. Control valve with TCMAT- 2 1 5
OFF vehicle 10. Torque converter AT- 2 6 7
No. Items Symptom Condition Diagnostic Item Reference
page
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISAT-67
< SERVICE INFORMATION >
DE
F
G H
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K L
M A
B
AT
N
O P
23
Slips/Will
Not En-
gage Vehicle cannot be
started from D
1.
Refer to AT- 1 8 0 , "
Ve-
hicle Cannot Be Start-
ed from D1". ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Accelerator pedal position sensorAT- 1 3 0
3. Line pressure test AT- 4 9
4. CAN communication lineAT- 9 4
5. Control valve with TCMAT- 2 1 5
OFF vehicle6. Torque converter
AT- 2 6 7
7. Oil pump assemblyAT- 2 8 5
8. 3rd one-way clutchAT- 2 8 7
9. 1st one-way clutch AT- 2 9 5
10. Gear systemAT- 2 4 9
11. Reverse brakeAT- 2 6 7
12. 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
13. 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
24
Does not lock-up.
Refer to
AT- 1 9 0 , "A/T
Does Not Lock-up".ON vehicle 1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Engine speed signalAT- 11 2
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 4
6. CAN communication line AT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 79. Oil pump assemblyAT- 2 8 5
25Does not hold lock-up
condition.
Refer to
AT- 1 9 2 , "A/T
Does Not Hold Lock-
up Condition". ON vehicle 1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Engine speed signalAT- 11 2
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 4
6. CAN communication line AT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 79. Oil pump assemblyAT- 2 8 5
No. Items Symptom Condition Diagnostic Item Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AT-68
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
26Slips/Will
Not En-
gage Lock-up is not re-
leased.
Refer to
AT- 1 9 4 ,
"Lock-up Is Not Re-
leased". ON vehicle1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Engine speed signalAT- 11 2
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 4
6. CAN communication line AT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 79. Oil pump assemblyAT- 2 8 5
27No shock at all or the
clutch slips when vehi-
cle changes speed D1
→ D
2 or M1 → M2. ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 7
3. Direct clutch solenoid valve AT- 1 4 7
4. CAN communication line AT- 9 4
5. Line pressure testAT- 4 9
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Torque converter
AT- 2 6 7
8. Oil pump assemblyAT- 2 8 5
9. 3rd one-way clutchAT- 2 8 7
10. Gear systemAT- 2 4 9
11. Direct clutchAT- 3 0 3
12. 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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISAT-75
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
40
Slips/Will
Not En-
gage While accelerating in
4th, engine races or
slippage occurs.
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. Input clutch solenoid valveAT- 1 4 3
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
41While accelerating in
5th, engine races or
slippage occurs. 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. Front brake solenoid valveAT- 1 4 5
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Torque converter
AT- 2 6 7
8. Oil pump assembly AT- 2 8 5
9. Front brake (brake band)AT- 2 6 7
10. Input clutchAT- 2 8 9
11. Gear systemAT- 2 4 9
12. High and low reverse clutchAT- 3 0 1
42 Slips at lock-up.ON vehicle1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Engine speed signalAT- 11 2
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 4
6. CAN communication line AT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 79. Oil pump assemblyAT- 2 8 5
No. Items Symptom Condition Diagnostic Item Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISAT-79
< SERVICE INFORMATION >
DE
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G H
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M A
B
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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AT-84
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Data are reference value and are measured between each terminal and ground.
CONSULT-III Function (TRANSMISSION)INFOID:0000000001327163
CONSULT-III can display each diagnostic item us ing the diagnostic test models shown following.
FUNCTION
CONSULT-III REFERENCE VALUE
NOTICE:
1. The CONSULT-III electrically displays shift timi ng and lock-up timing (that is, operation timing of each
solenoid).
Check for time difference between actual shift timi ng and the CONSULT-III display. If the difference is
noticeable, mechanical parts (except solenoids, sens ors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) display ed on CONSULT-III and that indicated in Service Man-
ual may differ slightly. This occurs because of the following reasons:
- Actual shift schedule has more or less tolerance or allowance,
- Shift schedule indicated in Service Manual refers to the point where shifts start, and
- Gear position displayed on CONSULT-III indicates the point where shifts are completed.
Te r m i n a l Wire
color Item Condition Data (Approx.)
1LG Power supply
(Memory back-up) Always Battery voltage
2LG Power supply
(Memory back-up)
Always Battery voltage
3 L CAN-H – –
4PU K-line (CONSULT-
III signal) The terminal is connected to the data link connector for CONSULT-III. –
5 B Ground – –
6YPower supply – Battery voltage
–0 V
7OR Back-up lamp re-
lay Selector lever in “R” position. 0 V
Selector lever in other positions. Battery voltage
8 P CAN-L – –
9 GY Starter relay Selector lever in “N” and “P
” positions. Battery voltage
Selector lever in other positions. 0 V
10 B Ground – –
Diagnostic test mode Function
Work support This mode enables a technician to adjust some devices faster and more accurately by following the in-
dications on CONSULT-III.
Self-diagnostic results Self-diagnostic results can be read and erased quickly.
Data monitor Input/Output data in the ECU can be read.
CAN diagnostic support mon-
itor The results of transmit/receive diagnosis of CAN communication can be read.
Function test Performed by CONSULT-III instead of a technician to determine whether each system is “OK” or “NG”.
DTC work support Select the operating condition to confirm Diagnosis Trouble Codes.
ECU part number TCM part number can be read.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISAT-85
< SERVICE INFORMATION >
DE
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3. Display of solenoid valves on CONSULT-III changes at t he start of shifting, while gear position is displayed
upon completion of shifting (which is computed by TCM).
Item name Condition Display value (Approx.)
ATF TEMP SE 1 0°C (32 °F) − 20 °C (68 °F) − 80 °C (176 °F) 3.3
− 2.7 − 0.9 V
ATF TEMP SE 2 3.3 − 2.5 − 0.7 V
ATF TEMP 1 Ignition switch ON Measured ATF temperature is dis-
played.
TCC SOLENOID Lock-up is active 0.4 − 0.6 A
SLCT LVR POSI Selector lever in “N
” and “P” positions. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
VHCL/S SE-A/T During driving Approximately matches the speedom-
eter reading.
VEHICLE SPEED During driving Approximately matches the speedom-
eter reading.
ENGINE SPEED Engine running Closely matches the tachometer read-
ing.
LINE PRES SOL During driving 0.2 − 0.6 A
TURBINE REV During driving (lock-up ON) Approximately matches the engine
speed.
VHCL/S SE-MTR During driving Approximately matches the speedom-
eter reading.
ATF PRES SW 2 Low coast brake engaged. Refer to
AT- 1 8
.ON
Low coast brake disengaged. Refer to AT- 1 8
. OFF
I/C SOLENOID Input clutch disengaged. Refer to
AT- 1 8
.0.6 − 0.8 A
Input clutch engaged. Refer to AT- 1 8
.0 − 0.05 A
FR/B SOLENOID Front brake engaged. Refer to
AT- 1 8
.0.6 − 0.8 A
Front brake disengaged. Refer to AT- 1 8
. 0 − 0.05 A
D/C SOLENOID Direct clutch disengaged. Refer to
AT- 1 8
.0.6 − 0.8 A
Direct clutch engaged. Refer to AT- 1 8
.0 − 0.05 A
HLR/C SOL High and low reverse clutch disengaged. Refer to
AT- 1 8
.0.6 − 0.8 A
High and low reverse clutch engaged. Refer to AT- 1 8
.0 − 0.05 A
ON OFF SOL Low coast brake engaged. Refer to
AT- 1 8
.ON
Low coast brake disengaged. Refer to AT- 1 8
.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
STARTER RELAY Selector lever in “N
” and “P” positions. ON
Selector lever in other positions. OFF
ACCELE POSI Released accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSISAT-87
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
*1: Refer to EC-71, "Malfunction Indicator Lamp (MIL)" (for VQ35DE engine) or EC-649, "Malfunction Indicator Lamp (MIL)" (for VK45DE
engine.) A/T TCC S/V
FNCTN
 A/T cannot perform lock-up even if electrical circuit is good.
 TCM detects as irregular by comparing difference value with slip
rotation. P0744
P0744
(*2)AT- 1 2 6
L/PRESS SOL/
CIRC  Normal voltage not applied to solenoid due to cut line, short, or the
like.
 TCM detects as irregular by comparing target value with monitor value. P0745 P0745
AT- 1 2 8
TP SEN/CIRC A/TTCM does not receive the proper accelerator pedal position signals
(input by CAN communication) from ECM. P1705 P1705
AT- 1 3 0
ATF TEMP SEN/
CIRC During running, the A/T fluid temperature sensor signal voltage is
excessively high or low.
P1710 P0710
AT- 1 3 2
VEH SPD SE/CIR-
MTR Signal (CAN communication) from vehicle speed sensor MTR not
input due to cut line or the like.
 Unexpected signal input during running. P1721 —
AT- 1 3 7
A/T INTERLOCKExcept during shift change, the gear position and ATF pressure
switch states are monitored and comparative judgement made.
P1730 P1730
AT- 1 3 9
A/T 1ST E/BRAK-
INGEach ATF pressure switch and solenoid current is monitored and if
a pattern is detected having engine braking 1st gear other than in the
M1 position, a malfunction is detected.
P1731 —
AT- 1 4 1
I/C SOLENOID/
CIRC Normal voltage not applied to solenoid due to functional malfunc-
tion, cut line, short, or the like.
 TCM detects as irregular by comparing target value with monitor value. P1752 P1752
AT- 1 4 3
FR/B SOLENOID/
CIRC Normal voltage not applied to solenoid due to functional malfunc-
tion, cut line, short, or the like.
 TCM detects as irregular by comparing target value with monitor value. P1757 P1757
AT- 1 4 5
D/C SOLENOID/
CIRC Normal voltage not applied to solenoid due to cut line, short, or the
like.
 TCM detects as irregular by comparing target value with monitor value. P1762 P1762
AT- 1 4 7
HLR/C SOL/CIRC Normal voltage not applied to solenoid due to functional malfunc-
tion, cut line, short, or the like.
 TCM detects as irregular by comparing target value with monitor value. P1767 P1767
AT- 1 4 9
LC/B SOLENOID/
CIRCNormal voltage not applied to solenoid due to functional malfunction,
cut line, short, or the like.
P1772 P1772
AT- 1 5 1
LC/B SOLENOID
FNCT TCM detects an improper voltage drop when it tries to operate the
solenoid valve.
 Condition of ATF pressure switch 2 is different from monitor value, and relation between gear position and actual gear ratio is irregu-
lar. P1774
P1774(*2)AT- 1 5 3
MANU MODE SW/
CIRC When an impossible pattern of switch signals is detected, a malfunc-
tion is detected.
P1815 —
AT- 1 5 5
NO DTC IS DE-
TECTED FUR-
THER TESTING
MAY BE RE-
QUIREDNo NG item has been detected. X X —
Items (CONSULT-
III screen terms) Malfunction is detected when... TCM self-di-
agnosis OBD-II
(DTC)
Reference page
“TRANS-
MISSION”
with CON- SULT-III MIL indica-
tor lamp
(*1),
“ENGINE”
with CON-
SULT-III or GST
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C