sensor INFINITI FX35 2004 Repair Manual

TROUBLE DIAGNOSIS
AT-89
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Revision: 2004 November 2004 FX35/FX45
68
OthersEngine does not start
in N or P position.
Refer to AT-193, "Engine Cannot Be
Started In “P” or “N”
Position" .ON vehicle1. Ignition switch and starterPG-3
, SC-
10
2. Control linkage adjustmentAT-234
3. PNP switchAT- 11 2
69Engine starts in posi-
tions other than N or
P.ON vehicle1. Ignition switch and starterPG-3
, SC-
10
2. Control linkage adjustmentAT-234
3. PNP switchAT- 11 2
70 Engine stall.ON vehicle1. Fluid level and stateAT- 5 1
2. Engine speed signalAT-121
3. Turbine revolution sensorAT-143
4. Torque converter clutch solenoid valveAT-123
5. CAN communication lineAT-105
6. Control valve with TCMAT-242
OFF vehicle 7. Torque converterAT-286
71Engine stalls when
select lever shifted N
→ D, R.ON vehicle1. Fluid level and stateAT- 5 1
2. Engine speed signalAT-121
3. Turbine revolution sensorAT-143
4. Torque converter clutch solenoid valveAT-123
5. CAN communication lineAT-105
6. Control valve with TCMAT-242
OFF vehicle 7. Torque converterAT-286
72Engine speed does
not return to idle.
Refer to AT-221,
"Engine Speed Does
Not Return To Idle" .ON vehicle1. Fluid level and stateAT- 5 1
2. ATF pressure switch 5 and direct clutch solenoid valveAT-182,
AT-160

3. ATF pressure switch 1 and front brake solenoid valveAT-178
,
AT-156
4. Accelerator pedal position sensorAT-136
5. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
6. CAN communication lineAT-105
7. Control valve with TCMAT-242
OFF vehicle8. Front brake (brake band)AT-2869. Direct clutchAT-323
No. Items Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
AT-91
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Revision: 2004 November 2004 FX35/FX45
CONSULT-IIACS007AI
After performing AT- 1 0 3 , "Diagnostic Procedure Without CONSULT-II" , place check marks for results on the
AT- 4 6 , "
DIAGNOSTIC WORKSHEET" . Reference pages are provided following the items.
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).
4. Additional CONSULT-II information can be found in the Operation Manual supplied with the CONSULT-II
unit.
FUNCTION
CONSULT-II REFERENCE VALUE
Diagnostic test mode Function Reference page
Self-diagnostic results Self-diagnostic results can be read and erased quickly.AT- 9 4
Data monitor Input/Output data in the ECU can be read.AT- 9 7
CAN diagnostic support
monitorThe results of transmit/receive diagnosis of CAN communication can be read. —
Function testConducted 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-100
ECU part number ECU part number can be read. —
Item name Condition Display value (Approx.)
ATF TEMP SE 1
0°C (32° F) - 20°C (68°F) - 80°C (176°F)2.2 - 1.8 - 0.6 V
ATF TEMP SE 22.2 - 1.7 - 0.45 V
TCC SOLENOIDWhen perform slip lock-up 0.2 - 0.4 A
When perform lock-up 0.4 - 0.6 A
SLCT LVR POSISelector lever in “N”,“P” position. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
VHCL/S SE·A/T During drivingApproximately matches the speedome-
ter reading.
ENGINE SPEED Engine runningClosely 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 drivingApproximately matches the speedome-
ter reading.
ATF PRES SW 1Front brake engaged. Refer to AT- 2 0
.ON
Front brake disengaged. Refer to AT- 2 0
.OFF

AT-94
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
SELF-DIAGNOSTIC RESULT MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE” Refer to AT- 9 3 ,
"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
SCIA5304E
Items (CONSULT-
II screen terms)Malfunction is detected when...TCM self-diagnosis OBD-II (DTC)
A/T CHECK
indicator
lamp “A/T” with
CONSULT-IIMIL indicator
lamp*1,
“ENGINE” with
CONSULT-II or
GST
CAN COMM CIR-
CUIT

When a malfunction is detected in CAN communications X U1000 U1000
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.)X P0615 —
PNP SW/CIRC

PNP switch 1-4 signals input with impossible pattern

P position is detected from N position without any other
position being detected in between.X P0705 P0705
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
movingX P0720 P0720
ENGINE SPEED
SIG

TCM does not receive the CAN communication signal from
the ECM.X P0725 P0725*3
TCC SOLENOID/
CIRC

Normal voltage not applied to solenoid due to cut line,
short, or the likeX P0740 P0740
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.X P0744 P0744*2
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.X P0745 P0745
TCM-POWER
SUPPLY

When the power supply to the TCM is cut “OFF”, for exam-
ple because the battery is removed, and the self-diagnos-
tics memory function stops

This is not a malfunction message (Whenever shutting
“OFF” a power supply to the TCM, this message appears
on the screen.)— P1701 —
TCM·RAM

TCM memory (RAM) is malfunctioning. — P1702 —
TCM·ROM

TCM memory (ROM) is malfunctioning. — P1703 —

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
TCM·EEPROM
TCM memory (EEP ROM) is malfunctioning. — P1704 —
TP SEN/CIRC A/T

TCM does not receive the proper accelerator pedal position
signals (input by CAN communication) from ECM.X P1705 P1705*3
ATF TEMP SEN/
CIRC

During running, the ATF temperature sensor signal voltage
is excessively high or lowX P1710 P0710
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.X P1716 P1716
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 —
A/T INTERLOCK

Except during shift change, the gear position and ATF pres-
sure switch states are monitored and comparative judge-
ment made.X P1730 P1730
A/T 1ST E/BRAK-
ING

Each ATF pressure switch and solenoid current is moni-
tored and if a pattern is detected having engine braking 1st
gear other than in the M1 position, a malfunction is
detected.X P1731 —
I/C SOLENOID/
CIRC

Normal voltage not applied to solenoid due to functional
malfunction, cut line, short, or the like

TCM detects as irregular by comparing target value with
monitor value.X P1752 P1752
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 condi-
tion of ATF pressure switch 3 is irregular during releasing
accelerator pedal. (Other than during shift change)X P1754 P1754*2
FR/B SOLENOID/
CIRC

Normal voltage not applied to solenoid due to functional
malfunction, cut line, short, or the like

TCM detects as irregular by comparing target value with
monitor value.X P1757 P1757
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 condi-
tion of ATF pressure switch 1 is irregular during releasing
accelerator pedal. (Other than during shift change)X P1759 P1759*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.X P1762 P1762 Items (CONSULT-
II screen terms)Malfunction is detected when...TCM self-diagnosis OBD-II (DTC)
A/T CHECK
indicator
lamp “A/T” with
CONSULT-IIMIL indicator
lamp*1,
“ENGINE” with
CONSULT-II or
GST

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
How to Erase Self-diagnostic Results
1. Perform “CONSULT-II SETTING PROCEDURE” Refer to AT- 9 3 ,
"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 3 ,
"CONSULT-II SETTING PROCEDURE" .
2. Touch “DATA MONITOR”.
NOTE:
When malfunction is 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
SCIA5304E
PCIA0061E
SCIA5304E
Monitored item (Unit)Monitor Item Selection
Remarks ECU
INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION
FROM
MENU
VHCL/S SE·A/T (km/h) X X X Revolution sensor
VHCL/S SE·MTR (km/h) X — X
ACCELE POSI (0.0/8) X — X Accelerator pedal position signal
THROTTLE POSI (0.0/8) X X XDegree 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 display) X — X
Signal input with CAN communications
W/O THL POS (ON-OFF display) X — X
BRAKE SW (ON-OFF display) X — X Stop lamp switch

DTC P0615 START SIGNAL CIRCUIT
AT-111
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Revision: 2004 November 2004 FX35/FX45
3. CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to AT- 2 4 2 , "
Control Valve with TCM and A/T Fluid Temperature
Sensor 2" .
2. Disconnect A/T assembly harness connector and control valve with TCM harness connector.
3. Check continuity between A/T assembly harness connector terminal and control valve with TCM harness
connector terminal. Refer to AT- 1 0 9 , "
Wiring Diagram — AT — STSIG" .
4. If OK, check harness for short to ground and short to power.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 4 2 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
4. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 0 8 , "DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.

AT-114
DTC P0705 PARK/NEUTRAL POSITION SWITCH
Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureACS007B3
1. CHECK PNP SW CIRCUIT
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Read out “N/P”, “R” and “D” position switches moving selector
lever to each position.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK TCM
Perform TCM input/output signals inspection. Refer to AT- 9 0 , "
TCM Input/Output Signal Reference Values" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to AT- 2 4 2 , "
Control Valve with TCM and A/T Fluid Temperature
Sensor 2" .
2. Disconnect A/T assembly harness connector and control valve with TCM harness connector.
3. Check continuity between A/T assembly harness connector terminal and control valve with TCM harness
connector terminal. Refer to AT- 11 3 , "
Wiring Diagram — AT — PNP/SW" .
4. If OK, check harness for short to ground and short to power.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 4 2 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
4. DETECT MALFUNCTIONING ITEM
Check the following items:

Harness for short or open between battery and A/T assembly harness connector terminals 1, 2

Harness for short or open between ignition switch and A/T assembly harness connector terminal 6

10A fuse (No. 37, located in the fuse and fusible link block) and 10A fuse (No. 83, located in the IPDM E/
R).

Ignition switch, Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
Item name Condition Display value
SLCTLVR POSISelector lever in “N” and “P” positions. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
SCIA5296E

AT-116
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
Revision: 2004 November 2004 FX35/FX45
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)PFP:32702
DescriptionACS007B4
The revolution sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal.
The pulse signal is sent to the TCM which converts it into vehicle speed.
CONSULT-II Reference ValueACS007B5
On Board Diagnosis LogicACS007B6

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “VEH SPD SEN/CIR AT” with CONSULT-II or P0720 without CONSULT-II is
detected under the following conditions.
–When TCM does not receive the proper voltage signal from the sensor.
–After ignition switch is turned “ON”, irregular signal input from vehicle speed sensor MTR before the vehi-
cle starts moving.
Possible CauseACS007B7

Harness or connectors
(Sensor circuit is open or shorted.)

Revolution sensor

Vehicle speed sensor MTR
DTC Confirmation ProcedureACS007B8
CAUTION:

Always drive vehicle at a safe speed.

Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Drive vehicle and check for an increase of “VHCL/S SE·A/T”
value in response to “VHCL/S SE·MTR” value.
If the check result is NG, go to AT- 11 9 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
4. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
5. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VHCL SPEED SE: 30 km/h (19 MPH) or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
If the check result is NG, go to AT- 11 9 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
6. Maintain the following conditions for at least 5 consecutive seconds.
ENGINE SPEED: 3,500 rpm or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
If the check result is NG, go to AT- 11 9 , "
Diagnostic Procedure" .
Item name Condition Display value (km/h)
VHCL/S SE·A/T During driving Approximately matches the speedometer reading.
SAT014K

DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
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Revision: 2004 November 2004 FX35/FX45
WITH GST
Follow the procedure “With CONSULT-II”.

AT-118
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — AT — VSSA/TACS007B9
TCWM0249E