2006 INFINITI FX35 starter

INDEX FOR DTC AT-5
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2006 December 2006 FX35/FX45
INDEX FOR DTCPFP:00024
Alphabetical Index NCS001AL
NOTE:
If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION”. Refer to AT- 1 0 4 , "
DTC U1000 CAN COMMUNICATION LINE" .
*1: These numbers are prescribed by SAE J2012.
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL. Items
(CONSULT-II screen terms) DTC
Reference page
OBD-II Except OBD-II
CONSULT-II GST
(*1) CONSULT-II only “A/T”
A/T 1ST E/BRAKING — P1731 AT- 1 4 4
ATF PRES SW 1/CIRC — P1841AT- 1 7 1
ATF PRES SW 3/CIRC — P1843AT- 1 7 3
ATF PRES SW 5/CIRC — P1845AT- 1 7 5
ATF PRES SW 6/CIRC — P1846AT- 1 7 7
A/T INTERLOCK P1730 P1730AT- 1 4 1
A/T TCC S/V FNCTN
P0744(*2)P0744 AT- 1 2 7
ATF TEMP SEN/CIRC P0710 P1710 AT- 1 3 4
CAN COMM CIRCUIT U1000 U1000AT- 1 0 4
D/C SOLENOID/CIRC P1762 P1762AT- 1 5 4
D/C SOLENOID FNCTN
P1764(*2)P1764 AT- 1 5 6
ENGINE SPEED SIG — P0725 AT- 1 2 3
FR/B SOLENOID/CIRC P1757 P1757AT- 1 5 0
FR/B SOLENOID FNCT
P1759(*2)P1759 AT- 1 5 2
HLR/C SOL/CIRC P1767 P1767 AT- 1 5 8
HLR/C SOL FNCTN
P1769(*2) P1769
AT- 1 6 0
I/C SOLENOID/CIRC P1752 P1752 AT- 1 4 6
I/C SOLENOID FNCTN
P1754(*2)P1754 AT- 1 4 8
L/PRESS SOL/CIRC P0745 P0745 AT- 1 2 9
LC/B SOLENOID/CIRC P1772 P1772AT- 1 6 2
LC/B SOLENOID FNCT
P1774(*2)P1774 AT- 1 6 4
MANU MODE SW/CIRC — P1815 AT- 1 6 6
PNP SW/CIRC P0705 P0705 AT- 11 2
STARTER RELAY/CIRC — P0615AT- 1 0 7
TCC SOLENOID/CIRC P0740 P0740AT- 1 2 5
TCM P0700 P0700 AT- 111
TP SEN/CIRC A/T — P1705AT- 1 3 1
TURBINE REV S/CIRC P0717 P0717 AT- 11 6
VEH SPD SE/CIR-MTR — P1721AT- 1 3 9
VEH SPD SEN/CIR AT P0720 P0720 AT- 11 8

AT-6
INDEX FOR DTC
Revision: 2006 December 2006 FX35/FX45
DTC No. Index NCS001AM
NOTE:
If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION”. Refer to AT- 1 0 4 , "
DTC U1000 CAN COMMUNICATION LINE" .
*1: These numbers are prescribed by SAE J2012.
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL. DTC
Items
(CONSULT-II screen terms) Reference page
OBD-II Except OBD-II
CONSULT-II GST
(*1)CONSULT-II only “A/T”
— P0615 STARTER RELAY/CIRC AT- 1 0 7
P0700 P0700 TCM AT- 111
P0705 P0705 PNP SW/CIRCAT- 11 2
P0710 P1710 ATF TEMP SEN/CIRCAT- 1 3 4
P0717 P0717 TURBINE REV S/CIRC AT- 11 6
P0720 P0720 VEH SPD SEN/CIR ATAT- 11 8
— P0725 ENGINE SPEED SIGAT- 1 2 3
P0740 P0740 TCC SOLENOID/CIRC AT- 1 2 5
P0744(*2)P0744 A/T TCC S/V FNCTNAT- 1 2 7
P0745 P0745 L/PRESS SOL/CIRC AT- 1 2 9
— P1705 TP SEN/CIRC A/TAT- 1 3 1
— P1721 VEH SPD SE/CIR-MTRAT- 1 3 9
P1730 P1730 A/T INTERLOCK AT- 1 4 1
— P1731 A/T 1ST E/BRAKINGAT- 1 4 4
P1752 P1752 I/C SOLENOID/CIRC AT- 1 4 6
P1754(*2)P1754 I/C SOLENOID FNCTNAT- 1 4 8
P1757 P1757 FR/B SOLENOID/CIRC AT- 1 5 0
P1759(*2)P1759 FR/B SOLENOID FNCTAT- 1 5 2
P1762 P1762 D/C SOLENOID/CIRC AT- 1 5 4
P1764(*2)P1764 D/C SOLENOID FNCTNAT- 1 5 6
P1767 P1767 HLR/C SOL/CIRC AT- 1 5 8
P1769(*2)P1769 HLR/C SOL FNCTNAT- 1 6 0
P1772 P1772 LC/B SOLENOID/CIRC AT- 1 6 2
P1774(*2)P1774 LC/B SOLENOID FNCTAT- 1 6 4
— P1815 MANU MODE SW/CIRC AT- 1 6 6
— P1841 ATF PRES SW 1/CIRCAT- 1 7 1
— P1843 ATF PRES SW 3/CIRCAT- 1 7 3
— P1845 ATF PRES SW 5/CIRCAT- 1 7 5
— P1846 ATF PRES SW 6/CIRCAT- 1 7 7
U1000 U1000 CAN COMM CIRCUIT AT- 1 0 4

AT-32
A/T CONTROL SYSTEM
Revision: 2006 December 2006 FX35/FX45
TCM FunctionNCS001AZ
The function of the TCM is to:

Receive input signals sent from various switches and sensors.

Determine required line pressure, shifting point, lock-up operation, and engine brake operation.

Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transmission senses vehicle operating conditions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM DIAGRAM
SENSORS (or SIGNALS)

TCM

ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed signal
Manual mode switch signal
Stop lamp switch signal
Turbine revolution sensor
ATF pressure switch Shift control
Line pressure control
Lock-up control
Engine brake control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
Duet-EA control
CAN system Input clutch solenoid valve
Direct clutch solenoid valve
Front brake solenoid valve
High and low reverse clutch
solenoid valve
Low coast brake solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
A/T CHECK indicator lamp
Starter relay
Back-up lamp relay
SCIA5325E

AT-44
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
TROUBLE DIAGNOSISPFP:00004
DTC Inspection Priority ChartNCS001BC
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for DTC U1000 CAN
COMMUNICATION. Refer to AT- 1 0 4
.
Fail-safeNCS001BD
The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is a an error in
a main electronic control input/output signal circuit.
In fail-safe mode, even if the selector lever is “D” or “M” mode, the transmission is fixed in 2nd, 4th or 5th
(depending on the breakdown position), so the customer should feel “slipping” or “poor acceleration”.
Even when the electronic circuits are normal, under special conditions (for example, when slamming on the
brake with the wheels spinning drastically and stopping the tire rotation), the transmission can go into fail-safe
mode. If this happens, switch OFF the ignition switch for 10 seconds, then switch it ON again to return to the
normal shift pattern. Therefore, the customer's vehicle has returned to normal, so handle according to the
“WORK FLOW” (Refer to AT- 4 7
).
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, this function controls the A/T to mark driving possible.
Vehicle Speed Sensor
Signals are input from two systems - from vehicle speed sensor A/T (revolution sensor) installed on the trans-
mission and from combination meter so normal driving is possible even if there is a malfunction in one of the
systems. And if vehicle speed sensor A/T (revolution sensor) has unusual cases, 5th gear and manual mode
are prohibited.
Accelerator Pedal Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according
to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow systems,
the engine speed is fixed by ECM to a pre-determined engine speed to make driving possible.
Throttle Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according
to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow systems,
the accelerator opening angle is controlled by the idle signal sent from the ECM which is based on input indi-
cating either idle condition or off-idle condition (pre-determined accelerator opening) in order to make driving
possible.
PNP Switch
In the unlikely event that a malfunction signal enters the TCM, the position indicator is switched OFF, the
starter relay is switched OFF (starter starting is disabled), the back-up lamp relay switched OFF (back-up lamp
is OFF) and the position is fixed to the “D” position to make driving possible.
Starter Relay
The starter relay is switched OFF. (Starter starting is disabled.)
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above

AT-88
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 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-
8
2. Control linkage adjustment 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-
8
2. Control linkage adjustment 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

TROUBLE DIAGNOSIS AT-89
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2006 December 2006 FX35/FX45
TCM Input/Output Signal Reference ValuesNCS001BQ
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
–0 V
7OR Back-up lamp
relay Selector lever in “R” position. 0 V
Selector lever in other positions. Battery voltage
8 P CAN-L – –
9GYStarter relay Selector lever in “N” and “P” positions. Battery voltage
Selector lever in other positions. 0 V
10 B Ground – –

TROUBLE DIAGNOSIS AT-91
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2006 December 2006 FX35/FX45
FR/B SOLENOID Front brake engaged. Refer to
AT- 2 2 . 0.6 - 0.8 A
Front brake disengaged. Refer to AT- 2 2
. 0 - 0.05 A
I/C SOLENOID Input clutch disengaged. Refer to
AT- 2 2
. 0.6 - 0.8 A
Input clutch engaged. Refer to AT- 2 2
. 0 - 0.05 A
D/C SOLENOID Direct clutch disengaged. Refer to
AT- 2 2
. 0.6 - 0.8 A
Direct clutch engaged. Refer to AT- 2 2
. 0 - 0.05 A
HLR/C SOL High and low reverse clutch disengaged. Refer to
AT- 2 2
. 0.6 - 0.8 A
High and low reverse clutch engaged. Refer to AT- 2 2
. 0 - 0.05 A
STARTER RELAY Selector lever in “N” and “P” positions. ON
Selector lever in other positions. OFF
SLCT LVR POSI Selector lever in “N” and “P” positions. 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 2
.ON
Low coast brake disengaged. Refer to AT- 2 2
.OFF
ATF PRES SW 1 Front brake engaged. Refer to
AT- 2 2
.ON
Front brake disengaged. Refer to AT- 2 2
.OFF
ATF PRES SW 2 Low coast brake engaged. Refer to
AT- 2 2
.ON
Low coast brake disengaged. Refer to AT- 2 2
.OFF
ATF PRES SW 3 Input clutch engaged. Refer to
AT- 2 2
.ON
Input clutch disengaged. Refer to AT- 2 2
.OFF
ATF PRES SW 5 Direct clutch engaged. Refer to
AT- 2 2
.ON
Direct clutch disengaged. Refer to AT- 2 2
.OFF
ATF PRES SW 6 High and low reverse clutch engaged. Refer to
AT- 2 2
.ON
High and low reverse clutch disengaged Refer to AT- 2 2
.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: 2006 December 2006 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 8 ,
"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 a malfunction is detected in CAN communications 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