sensor INFINITI FX35 2005 Repair Manual

TROUBLE DIAGNOSIS AT-83
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2005 July 2005 FX48
Does Not
Change Does not change M4
→ M3.
Refer to AT-225, "A/T
Does Not Shift: 4th
Gear → 3rd Gear" . 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
49 Does not change M3
→ M2.
Refer to AT-227, "A/T
Does Not Shift: 3rd
Gear → 2nd Gear" . 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 6AT-181
6. CAN communication lineAT-106
7. Control valve with TCMAT-243
OFF vehicle 8. Front brake (brake band)
AT-2909. Input clutchAT-313
10. High and low reverse clutchAT-323
50 Does not change M2
→ M1.
Refer to AT-229, "A/T
Does Not Shift: 2nd
Gear → 1st Gear" . 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
51 Cannot be changed to
manual mode.
Refer to AT-223,
"Cannot Be Changed
to Manual Mode" . ON vehicle 1. Manual mode switch
AT-170
2. Turbine revolution sensorAT-141
3. CAN communication lineAT-106
52 Others Shift point is high in
“D” position. ON vehicle 1. Vehicle speed sensor A/T and vehicle speed sensor MTR
AT- 11 8
,
AT-143
2. Accelerator pedal position sensor AT-133
3. CAN communication lineAT-106
4. ATF temperature sensorAT-136
5. Control valve with TCMAT-243
No. Items Symptom Condition Diagnostic Item Reference
page

AT-84
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
53
Others Shift point is low in “D”
position. ON vehicle 1. Vehicle speed sensor A/T and vehicle speed sensor MTR
AT- 11 8
,
AT- 1 4 3
2. Accelerator pedal position sensor AT- 1 3 3
3. CAN communication lineAT- 1 0 6
4. Control valve with TCMAT- 2 4 3
54 Judder occurs during
lock-up. 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. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
5. Accelerator pedal position sensor AT- 1 3 3
6. CAN communication lineAT- 1 0 6
7. Torque converter clutch solenoid valveAT- 1 2 5
8. Control valve with TCMAT- 2 4 3
OFF vehicle 9. Torque converter AT- 2 9 0
55 Strange noise in “R”
position. ON vehicle
1. A/T fluid level and state
AT- 5 2
2. Engine speed signalAT- 1 2 3
3. CAN communication lineAT- 1 0 6
4. Control valve with TCMAT- 2 4 3
OFF vehicle 5. Torque converter
AT- 2 9 0
6. Oil pump assemblyAT- 3 0 8
7. Gear systemAT- 2 7 8
8. High and low reverse clutchAT- 3 2 3
9. Reverse brakeAT- 2 9 0
56 Strange noise in “N”
position. ON vehicle
1. A/T fluid level and state
AT- 5 2
2. Engine speed signalAT- 1 2 3
3. CAN communication lineAT- 1 0 6
4. Control valve with TCMAT- 2 4 3
OFF vehicle 5. Torque converter
AT- 2 9 06. Oil pump assemblyAT- 3 0 8
7. Gear systemAT- 2 7 8
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

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

AT-90
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
CONSULT-II Function (A/T)ACS002M9
CONSUT-II can display each diagnostic item using the diagnostic test models shown following.
FUNCTION
CONSULT-II REFERENCE VALUE
NOTICE:
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-II 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-II indicates the point where shifts are completed.
3. Display of solenoid valves on CONSULT-II changes at the start of shifting, while gear position is displayed upon completion of shifting (which is computed by TCM).
Diagnostic test mode Function Reference page
Self-diagnostic results Self-diagnostic results can be read and erased quickly. AT- 9 3
Data monitor Input/Output data in the ECU can be read.AT- 9 6
CAN diagnostic support
monitor The results of transmit/receive diagnosis of CAN communication can be read.
AT- 1 0 0
Function test Performed by CONSULT-II 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. AT- 1 0 0
ECU part number ECU part number can be read. —
Item name Condition Display value
(Approx.)
VHCL/S SE·A/T During driving Approximately
matches the speed-
ometer reading.
VHCL/S SE·MTR
ACCELE POSI Released accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
CLSD THL POS Released accelerator pedal. ON
Fully depressed accelerator pedal. OFF
W/O THL POS Fully depressed accelerator pedal. ON
Released accelerator pedal. OFF
BRAKE SW Depressed brake pedal. ON
Released brake pedal. OFF
ENGINE SPEED Engine running Closely matches the
tachometer reading.
TURBINE REV During driving (lock-up ON) Approximately
matches the engine
speed.
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
TCC SOLENOID When performing slip lock-up 0.2 - 0.4 A
When performing lock-up 0.4 - 0.6 A
LINE PRES SOL During driving 0.2 - 0.6 A

TROUBLE DIAGNOSIS AT-93
D E
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G H
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M A
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AT
Revision: 2005 July 2005 FX
SELF-DIAGNOSTIC RESULT MODE
After performing AT- 9 3 , "SELF-DIAGNOSTIC RESULT MODE" , place check marks for results on the AT- 4 7 ,
"DIAGNOSTIC WORKSHEET" . Reference pages are provided following the items.
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer to AT- 9 2 , "CONSULT-II SETTING PROCEDURE"
.
2. Touch “SELF-DIAG RESULTS”. Display shows malfunction experienced since the last erasing
operation.
Display Items List
X: Applicable, —: Not applicable
BCIA0031E
Items (CONSULT-II
screen terms) Malfunction is detected when... TCM self-
diagnosis OBD-II
(DTC)
Reference page
“A/T” with
CONSULT- II MIL indica-
tor lamp*1, “ENGINE”
with CON- SULT-II or GST
CAN COMM CIR-
CUIT

When a malfunction is detected in CAN communications U1000 U1000 AT- 1 0 6
STARTER RELAY/
CIRC

If this signal is ON other than in “P” or “N” position, this is judged
to be a malfunction.
(And if it is OFF in “P” or “N” position, this too is judged to be a
malfunction.) P0615 —
AT- 1 0 9
TCM
TCM is malfunctioning P0700 P0700*3 AT- 11 3
PNP SW/CIRC

PNP switch 1-4 signals input with impossible pattern

“P” position is detected from “N” position without any other posi-
tion being detected in between. P0705 P0705
AT- 11 4
VEH SPD SEN/CIR
AT (Revolution
sensor)

Signal from vehicle speed sensor A/T (Revolution sensor) not
input due to cut line or the like

Unexpected signal input during running

After ignition switch is turned ON, unexpected signal input from
vehicle speed sensor MTR before the vehicle starts moving P0720 P0720
AT- 11 8
ENGINE SPEED
SIG
TCM does not receive the CAN communication signal from the
ECM. P0725 P0725*3
AT- 1 2 3
TCC SOLENOID/
CIRC
Normal voltage not applied to solenoid due to cut line, short, or
the like P0740 P0740
AT- 1 2 5
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 7
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 9
TCM·RAM
TCM memory (RAM) is malfunctioning. P1702 — AT- 1 3 1

AT-94
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
TCM·ROM
TCM memory (ROM) is malfunctioning. P1703 —AT-132
TP SEN/CIRC A/T
TCM does not receive the proper accelerator pedal position sig-
nals (input by CAN communication) from ECM. P1705 P1705*3
AT-133
ATF TEMP SEN/
CIRC
During running, the AT fluid temperature sensor signal voltage is
excessively high or low P1710 P0710
AT-136
TURBINE REV S/
CIRC
TCM does not receive the proper voltage signal from the sensor.

TCM detects an irregularity only at position of 4th gear for turbine
revolution sensor 2. P1716 P1716
AT-141
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-143
A/T INTERLOCK
Except during shift change, the gear position and ATF pressure
switch states are monitored and comparative judgement made. P1730 P1730
AT-145
A/T 1ST E/BRAK-
ING
Each 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-148
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-150
I/C SOLENOID
FNCTN

TCM detects that actual gear ratio is irregular, and relation
between gear position and condition of ATF pressure switch 3 is
irregular during depressing accelerator pedal. (Other than during
shift change)

TCM detects that relation between gear position and condition of
ATF pressure switch 3 is irregular during releasing accelerator
pedal. (Other than during shift change) P1754 P1754*2
AT-152
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-154
FR/B SOLENOID
FNCT

TCM detects that actual gear ratio is irregular, and relation
between gear position and condition of ATF pressure switch 1 is
irregular during depressing accelerator pedal. (Other than during
shift change)

TCM detects that relation between gear position and condition of
ATF pressure switch 1 is irregular during releasing accelerator
pedal. (Other than during shift change) P1759 P1759*2
AT-156
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-158
Items (CONSULT-II
screen terms) Malfunction is detected when... TCM self-
diagnosis OBD-II
(DTC)
Reference page
“A/T” with
CONSULT- II MIL indica-
tor lamp*1, “ENGINE”
with CON- SULT-II or GST

AT-96
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
*3: For VQ35DE engine.
How to Erase Self-Diagnostic Results
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer to AT- 9 2 , "CONSULT-II SETTING PROCEDURE"
.
2. Touch “SELF-DIAG RESULTS”.
3. Touch ”ERASE”. (The self-diagnostic results will be erased.)
DATA MONITOR MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer to AT- 9 2 , "CONSULT-II SETTING PROCEDURE"
.
2. Touch “DATA MONITOR”. NOTE:
When malfunctions detected, CONSULT-II performs “REAL-
TIME DIAGNOSIS”. Also, any malfunction detected while in
this mode will be displayed at real time.
Display Items List
X: Standard, —: Not applicable, : Option
BCIA0031E
PCIA0061E
BCIA0031E
Monitored item (Unit) Select Monitor Item
Remarks
ECU
INPUT
SIGNALS 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

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

AT-112
DTC P0615 START SIGNAL CIRCUIT
Revision: 2005 July 2005 FX
3. CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to AT- 2 4 3 , "
Control Valve with TCM and A/T Fluid Temperature
Sensor 2" .
2. Disconnect A/T assembly harness connector and TCM connector.
3. Check continuity between A/T assembly harness connector ter- minal and TCM connector terminal.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
4. DETECT MALFUNCTIONING ITEM
Check the following.

Starter relay, Refer to SC-10, "STARTING SYSTEM" .

IPDM E/R, Refer to PG-18, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)" .
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.
5. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 0 9 , "DTC Confirmation Procedure" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Item Connector Te r m i n a l
(Wire color) Continuity
A/T assembly harness con-
nector F44 9 (G)
Ye s
TCM connector F502 8 (G)
SCIA5440E