2007 INFINITI FX35 page 80

AT-88
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
68
Others Engine does not start
in “N” or “P” position.
Refer to AT-190, "Engine Cannot Be
Started in “P” or “N”
Position" . ON vehicle
1. Ignition switch and starter
PG-3
,
SC-
11
2. A/T position AT- 2 3 1
3. PNP switch AT- 11 2
69 Engine starts in posi-
tions other than “N” or
“P”. ON vehicle 1. Ignition switch and starter
PG-3
,
SC-
11
2. A/T position AT- 2 3 1
3. PNP switch AT- 11 2
70 Engine stall. ON vehicle 1. A/T fluid level and state
AT- 5 3
2. Engine speed signalAT- 1 2 3
3. Turbine revolution sensor AT- 11 6
4. Torque converter clutch solenoid valveAT- 1 2 5
5. CAN communication lineAT- 1 0 4
6. Control valve with TCMAT- 2 3 9
OFF vehicle 7. Torque converter AT- 2 9 4
71 Engine stalls when
selector lever shifted
“N” → “D”, “R”. ON vehicle 1. A/T fluid level and state
AT- 5 3
2. Engine speed signalAT- 1 2 3
3. Turbine revolution sensor AT- 11 6
4. Torque converter clutch solenoid valveAT- 1 2 5
5. CAN communication lineAT- 1 0 4
6. Control valve with TCMAT- 2 3 9
OFF vehicle 7. Torque converter AT- 2 9 4
72 Engine speed does
not return to idle.
Refer to AT-217,
"Engine Speed Does
Not Return to Idle" . ON vehicle 1. A/T fluid level and state
AT- 5 3
2. ATF pressure switch 5 and direct clutch solenoid valve AT- 1 7 5,
AT- 1 5 4

3. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 1
,
AT- 1 5 0
4. Accelerator pedal position sensor AT- 1 3 1
5. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 3 9
6. CAN communication line AT- 1 0 4
7. Control valve with TCMAT- 2 3 9
OFF vehicle 8. Front brake (brake band)
AT- 2 9 49. Direct clutchAT- 3 3 2
No. Items Symptom Condition Diagnostic Item Reference
page

AT-90
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
CONSULT-II Function (A/T)NCS001BR
CONSULT-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 2
Data monitor Input/Output data in the ECU can be read.AT- 9 5
CAN diagnostic support
monitor The results of transmit/receive diagnosis of CAN communication can be read.
AT- 9 9
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- 9 9
ECU part number TCM 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. 8.0/8
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 Slip lock-up is active 0.2 - 0.4 A
Lock-up is active 0.4 - 0.6 A
LINE PRES SOL During driving 0.2 - 0.6 A

AT-92
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
CONSULT-II SETTING PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
SELF-DIAGNOSTIC RESULT MODE
After performing AT- 9 2 , "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
Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
Display shows malfunction experienced since the last erasing opera-
tion.
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 TCM is not transmitting or receiving CAN communication
signal for 2 seconds or more U1000 U1000
AT-104
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-107
TCM
TCM is malfunctioning P0700 P0700 AT- 111
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 2
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. P0717 P0717
AT- 11 6
VEH SPD SEN/CIR
AT

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 —
AT-123
TCC SOLENOID/
CIRC
Normal voltage not applied to solenoid due to cut line, short, or
the like P0740 P0740
AT-125
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-127

TROUBLE DIAGNOSIS AT-93
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2006 July 2007 FX35/FX45
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
TP SEN/CIRC A/T
TCM does not receive the proper accelerator pedal position sig-
nals (input by CAN communication) from ECM. P1705 —
AT- 1 3 1
ATF TEMP SEN/
CIRC
During running, the AT fluid temperature sensor signal voltage is
excessively high or low P1710 P0710
AT- 1 3 4
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 9
A/T INTERLOCK
Except during shift change, the gear position and ATF pressure
switch states are monitored and comparative judgement made. P1730 P1730
AT- 1 4 1
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- 1 4 4
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 6
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- 1 4 8
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 5 0
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- 1 5 2
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 5 4
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-94
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
*1: Refer to EC-67, "Malfunction Indicator Lamp (MIL)" (for VQ35DE engine) or EC-730, "Malfunction Indicator Lamp (MIL)" (for
VK45DE engine.) D/C SOLENOID
FNCTN

TCM detects that actual gear ratio is irregular, and relation
between gear position and condition of ATF pressure switch 5 is
irregular during depressing accelerator pedal. (Other than during
shift change)

TCM detects that relation between gear position and condition of
ATF pressure switch 5 is irregular during releasing accelerator
pedal. (Other than during shift change) P1764
P1764
(*2)AT-156
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-158
HLR/C SOL
FNCTN

TCM detects that actual gear ratio is irregular, and relation
between gear position and condition of ATF pressure switch 6 is
irregular during depressing accelerator pedal. (Other than during
shift change)

TCM detects that relation between gear position and condition of
ATF pressure switch 6 is irregular during releasing accelerator
pedal. (Other than during shift change) P1769
P1769
(*2)AT-160
LC/B SOLENOID/
CIRC
Normal voltage not applied to solenoid due to functional malfunc-
tion, cut line, short, or the like P1772 P1772
AT-162
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
irregular. P1774
P1774(*2)AT-164
MANU MODE SW/
CIRC
When an impossible pattern of switch signals is detected, a mal-
function is detected. P1815 —
AT-166
ATF PRES SW 1/
CIRC

TCM detects that actual gear ratio is normal, and relation
between gear position and condition of ATF pressure switch 1 is
irregular during depressing accelerator pedal. (Other than during
shift change) P1841 —
AT-171
ATF PRES SW 3/
CIRC

TCM detects that actual gear ratio is normal, and relation
between gear position and condition of ATF pressure switch 3 is
irregular during depressing accelerator pedal. (Other than during
shift change) P1843 —
AT-173
ATF PRES SW 5/
CIRC

TCM detects that actual gear ratio is normal, and relation
between gear position and condition of ATF pressure switch 5 is
irregular during depressing accelerator pedal. (Other than during
shift change) P1845 —
AT-175
ATF PRES SW 6/
CIRC

TCM detects that actual gear ratio is normal, and relation
between gear position and condition of ATF pressure switch 6 is
irregular during depressing accelerator pedal. (Other than during
shift change) P1846 —
AT-177
NO DTC IS
DETECTED FUR-
THER TESTING
MAY BE
REQUIRED

No NG item has been detected. X X —
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

ATC-16
PRECAUTIONS
Revision: 2006 July 2007 FX35/FX45
Precautions for Leak Detection DyeNJS000DD

The A/C system contains a fluorescent leak detection dye used for locating refrigerant leaks. An ultraviolet
(UV) lamp is required to illuminate the dye when inspecting for leaks.

Always wear fluorescence enhancing UV safety goggles to protect your eyes and enhance the visibility of
the fluorescent dye.

The fluorescent dye leak detector is not a replacement for an electrical leak detector (SST: J-41995). The
fluorescent dye leak detector should be used in conjunction with an electrical leak detector (SST: J-41995)
to pin-point refrigerant leaks.

For the purpose of safety and customer’s satisfaction, read and follow all manufacture’s operating instruc-
tions and precautions prior to performing the work.

A compressor shaft seal should not necessarily be repaired because of dye seepage. The compressor
shaft seal should only be repaired after confirming the leak with an electrical leak detector (SST: J-41995).

Always remove any remaining dye from the leak area after repairs are completed to avoid a misdiagnosis
during a future service.

Never allow dye to come into contact with painted body panels or interior components. If dye is spilled,
clean immediately with the approved dye cleaner. Fluorescent dye left on a surface for an extended period
of time cannot be removed.

Never spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.).

Never use more than one refrigerant dye bottle (1/4 ounce /7.4 cc) per A/C system.

Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Never use
HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system, or CFC-12 (R-12) leak detection
dye in HFC-134a (R-134a) A/C system, or A/C system damage may result.

The fluorescent properties of the dye will remain for three years or a little over unless a compressor mal-
function occurs.
IDENTIFICATION
NOTE:
Vehicles with factory installed fluorescent dye have a green label.
Vehicles without factory installed fluorescent dye have a blue label.
IDENTIFICATION LABEL FOR VEHICLE
Vehicles with factory installed fluorescent dye have the identification label on the front side of hood.

TROUBLE DIAGNOSIS ATC-41
C
D E
F
G H
I
K L
M A
B
AT C
Revision: 2006 July 2007 FX35/FX45
SYMPTOM TABLE
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System. ATC-62, "
Power
Supply and Ground
Circuit for Auto
Amp."
A/C system cannot be controlled.
Go to Integrated Display System.

Go to Navigation System. AV- 8 4 , "
Unable to
Operate System
with A/C and AV
Switch" (Without
navigation system)
or AV-139, "
Unable
to Operate System
with A/C and AV
Switch" (With navi-
gation system)
Air outlet does not change. Go to Trouble Diagnosis Procedure for Mode Door Motor. (LAN) ATC-68, "
Mode
Door Motor Circuit"Mode door motor does not operate normally.
Discharge air temperature does not change. Go to Trouble Diagnosis Procedure for Air Mix Door Motor.
(LAN) AT C - 7 1 , "
Air Mix
Door Motor Circuit"Air mix door motor does not operate nor-
mally.
Intake door does not change. Go to Trouble Diagnosis Procedure for Intake Door Motor. (LAN) AT C - 7 4 , "
Intake
Door Motor Circuit"Intake door motor does not operate nor-
mally.
Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Motor. ATC-77, "
Blower
Motor Circuit"
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.AT C - 8 2 , "Magnet
Clutch Circuit"
Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling.
ATC-90, "
Insufficient
Cooling"
Go to Diagnosis Procedure for Insufficient Cooling. ATC-97, "
DIAGNO-
SIS PROCEDURE
FOR INSUFFI-
CIENT COOLING"
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.
ATC-99, "Insufficient
Heating"
Noise Go to Trouble Diagnosis Procedure for Noise.
ATC-100, "Noise"
Self-diagnosis cannot be performed. Go to Trouble Diagnosis Procedure for Self-diagnosis. ATC-101, "Self-
diagnosis"
Memory function does not operate. Go to Trouble Diagnosis Procedure for Memory Function.
ATC-102, "Memory
Function"

ATC-56
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
12. CHECK CAN COMMUNICATION ERROR
1. Press intake switch.
2. CAN communication error between the unified meter and A/C amp. and the display control unit can be detected as self-diag-
nosis results. (If plural errors occur, the display of each error will
blink twice for 0.5 second intervals.)
OK or NG
OK >> 1. Turn ignition switch OFF or AUTO switch ON. 2. INSPECTION END
NG >> Go to CAN communication. Refer to BCS-13, "
CAN
Communication Inspection Using CONSULT-II (Self-
Diagnosis)" .

Unified meter and A/C amp. - Display control unit
13. CHECK MALFUNCTIONING SENSOR AND DOOR MOTOR
Refer to the following chart for malfunctioning code No.
(If two or more sensors and door motors malfunction, corresponding code Nos. indicates 1 second each.)
*1: Perform self-diagnosis STEP-2 under sunshine.
When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise code No. 25 will indicate
despite that sunload sensor is functioning properly.
*2: ATC-103, "
DIAGNOSIS PROCEDURE FOR AMBIENT SENSOR" .
*3: ATC-107, "
DIAGNOSIS PROCEDURE FOR IN-VEHICLE SENSOR" .
*4: AT C - 11 2 , "
DIAGNOSIS PROCEDURE FOR INTAKE SENSOR" .
*5: ATC-109, "
DIAGNOSIS PROCEDURE FOR SUNLOAD SENSOR" .
*6: AT C - 7 3 , "
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR MOTOR PBR" .
>> INSPECTION END
SJIA1611E
Code No. Malfunctioning sensor and door motor (Including circuits) Reference page 21 / −21 Ambient sensor *2
22 / −22 In-vehicle sensor *3
24 / −24 Intake sensor *4
25 / −25
Sunload sensor
*1*5
26 / −26 Air mix door motor PBR (Driver side)
*6
27 / −27 Air mix door motor PBR (Passenger side)
SJIA1781E