INFINITI FX35 2005 Service Manual

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

TROUBLE DIAGNOSIS AT-89
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Revision: 2005 July 2005 FX
TCM Input/Output Signal Reference ValuesACS002M8
A/T ASSEMBLY HARNESS CONNECTOR TERMINAL LAYOUT
TCM INSPECTION TABLE
Data are reference value and are measured between each terminal and ground.
SCIA1658E
Terminal 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-
II signal) The terminal is connected to the data link connector for CONSULT-II. –
5 B Ground – –
6 Y Power supply – Battery voltage
–0V
7OR Back-up lamp
relay Selector lever in “R” position. 0V
Selector lever in other positions. Battery voltage
8 R CAN-L – –
9GYStarter relay Selector lever in “N” and “P” positions. Battery voltage
Selector lever in other positions. 0V
10 B Ground – –

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-91
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Revision: 2005 July 2005 FX
FR/B SOLENOID Front brake engaged. Refer to
AT- 2 1 . 0.6 - 0.8 A
Front brake disengaged. Refer to AT- 2 1
. 0 - 0.05 A
I/C SOLENOID Input clutch disengaged. Refer to
AT- 2 1
. 0.6 - 0.8 A
Input clutch engaged. Refer to AT- 2 1
. 0 - 0.05 A
D/C SOLENOID Direct clutch disengaged. Refer to
AT- 2 1
. 0.6 - 0.8 A
Direct clutch engaged. Refer to AT- 2 1
. 0 - 0.05 A
HLR/C SOL High and low reverse clutch disengaged. Refer to
AT- 2 1
. 0.6 - 0.8 A
High and low reverse clutch engaged. Refer to AT- 2 1
. 0 - 0.05 A
STARTER RELAY Selector lever in “N”, “P” position. ON
Selector lever in other positions. OFF
SLCT LVR POSI Selector lever in “N”,“P” position. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
ON OFF SOL Low coast brake engaged. Refer to
AT- 2 1
.ON
Low coast brake disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 1 Front brake engaged. Refer to
AT- 2 1
.ON
Front brake disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 2 Low coast brake engaged. Refer to
AT- 2 1
.ON
Low coast brake disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 3 Input clutch engaged. Refer to
AT- 2 1
.ON
Input clutch disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 5 Direct clutch engaged. Refer to
AT- 2 1
.ON
Direct clutch disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 6 High and low reverse clutch engaged. Refer to
AT- 2 1
.ON
High and low reverse clutch disengaged Refer to AT- 2 1
.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
GEAR During driving 1, 2, 3, 4, 5 Item name Condition
Display value
(Approx.)

AT-92
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
CONSULT-II SETTING PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.

For details, refer to the separate “CONSULT-II Operations Man-
ual”.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector, which is located in instrument lower driver panel.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “A/T”. If “A/T” is not indicated, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
6. Perform each diagnostic test mode according to each service procedure.
PBIB1503E
BCIA0029E
BCIA0030E
BCIA0031E

TROUBLE DIAGNOSIS AT-93
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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

TROUBLE DIAGNOSIS AT-95
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Revision: 2005 July 2005 FX
*1: Refer to AT- 4 2 , "Malfunction Indicator Lamp (MIL)" .
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL. 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- 1 6 0
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 6 2
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- 1 6 4
LC/B SOLENOID/
CIRC
Normal voltage not applied to solenoid due to functional malfunc-
tion, cut line, short, or the like P1772 P1772
AT- 1 6 6
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- 1 6 8
MANU MODE SW/
CIRC
When an impossible pattern of switch signals is detected, a mal-
function is detected. P1815 —
AT- 1 7 0
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- 1 7 5
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- 1 7 7
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- 1 7 9
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- 1 8 1
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

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

TROUBLE DIAGNOSIS AT-97
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Revision: 2005 July 2005 FX
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 —
AT F T E M P 1 ( °C) — X
AT F T E M P 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 —
1 POSITION SW (ON-OFF) X —
SLCT LVR POSI — X Selector lever position is recognized by the
TCM.
For fail-safe operation, the specific value used
for control is displayed.
OD CONT SW (ON-OFF) X —
Not mounted but displayed.
POWERSHIFT SW (ON-OFF) X —
HOLD SW (ON-OFF) X — Monitored item (Unit)
Select Monitor Item
Remarks
ECU
INPUT
SIGNALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU