2006 INFINITI FX35 Throttle

TROUBLE DIAGNOSIS AT-63
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Revision: 2006 December 2006 FX35/FX45
Vehicle Speed at Which Lock-up Occurs/ReleasesNCS001BO
2WD MODELS

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

At half throttle, the accelerator opening is 4/8 of the full opening.
AWD MODELS

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

At half throttle, the accelerator opening is 4/8 of the full opening.

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

At half throttle, the accelerator opening is 4/8 of the full opening.
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 63 - 73 (39 - 45) 40 - 48 (25 - 30)
Half throttle 196 - 204 (122 - 127) 153 - 161 (95 - 100)
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 59 - 67 (37 - 42) 56 - 64 (35 - 40)
Half throttle 178 - 186 (111 - 116) 139 - 147 (86 - 91)
Engine model VK45DE
Throttle position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 66 - 74 (41 - 46) 53 - 61 (33 - 38)
Half throttle 191 - 199 (119 - 124) 147 - 155 (92 - 97)

TROUBLE DIAGNOSIS AT-95
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Revision: 2006 December 2006 FX35/FX45
*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.
How to Erase Self-Diagnostic Results
1. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
2. Touch ”ERASE”. (The self-diagnostic results will be erased.)
DATA MONITOR MODE
Operation Procedure
Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
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
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 —

AT-102
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
Diagnostic Procedure without CONSULT-IINCS001BS
OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
Refer to EC-130, "Generic Scan Tool (GST) Function" (for VQ35DE) or EC-792, "Generic Scan Tool (GST)
Function" (for VK45DE).
OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Refer to EC-68, "Malfunction Indicator Lamp (MIL)" (for VQ35DE) or EC-729, "Malfunction Indicator Lamp
(MIL)" (for VK45DE).
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Description
When the ignition switch is turned ON, the indicator lamp lights up for 2 seconds. As a method for locating the
suspect circuit, when the self-diagnostics start signal is input, the memory for the malfunction location is output
and the A/T CHECK indicator lamp flashes to display the corresponding DTC.
Diagnostic Procedure
1. CHECK A/T CHECK INDICATOR LAMP
1. Start the engine with selector lever in “P” position. Warm engine to normal operating temperature.
2. Turn ignition switch ON and OFF at least twice, then leave it in the OFF position.
3. Wait 10 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?
YES >> GO TO 2.
NO >> Go to AT- 1 8 9 , "
A/T CHECK Indicator Lamp Does Not Come On" .
2. JUDGEMENT PROCEDURE
1. Turn ignition switch OFF.
2. Keep pressing shift lock release button.
3. Move selector lever from “P” to “D” position.
4. Release accelerator pedal. (Set the closed throttle position signal ON.)
5. Depress brake pedal. (Stop lamp switch signal ON.)
6. Turn ignition switch ON. (Do not start engine.)
7. Wait 3 seconds.
8. Move the selector lever to the manual shift gate side. (Manual mode signal ON.)
9. Release brake pedal. (Stop lamp switch signal OFF.)
10. Move the selector lever to “D” position. (Manual mode signal OFF.)
11. Depress brake pedal. (Stop lamp switch signal ON.)
12. Release brake pedal. (Stop lamp switch signal OFF.)
13. Depress accelerator pedal fully and release it.
>> GO TO 3.
3. CHECK SELF-DIAGNOSIS CODE
Check A/T CHECK indicator lamp. Refer to AT- 1 0 3 , "
Judgement Self-diagnosis Code" .
If the system does not go into self-diagnostics. Refer to AT- 11 2 , "
DTC P0705 PARK/NEUTRAL POSITION
SWITCH" , AT- 1 6 6 , "DTC P1815 MANUAL MODE SWITCH" , AT- 1 8 3 , "CLOSED THROTTLE POSITION AND
WIDE OPEN THROTTLE POSITION CIRCUIT" , AT- 1 8 4 , "BRAKE SIGNAL CIRCUIT" .
>> DIAGNOSIS END

AT-124
DTC P0725 ENGINE SPEED SIGNAL
Revision: 2006 December 2006 FX35/FX45
Diagnostic ProcedureNCS001CU
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to AT- 9 2 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 2 , "Diagnostic Pro-
cedure without CONSULT-II" .
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 1 0 4 , "DTC U1000 CAN COMMUNICATION LINE" .
NO >> GO TO 2.
2. CHECK DTC WITH TCM
With CONSULT-II
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. While monitoring engine speed, check for engine speed change corresponding to wide-open throttle position signal.
OK or NG
OK >> GO TO 3.
NG >> Check the ignition signal circuit. Refer to EC-649, "
IGNITION SIGNAL" (for VQ35DE) or EC-
1328, "IGNITION SIGNAL" (for VK45DE)
3. CHECK DTC
Perform AT- 1 2 3 , "
DTC Confirmation Procedure" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 4.
4. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT- 1 7 9 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. DETECT MALFUNCTIONING ITEM
Check the following.

A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 3 9 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Repair or replace damaged parts.
Item name Condition Display value
ENGINE SPEED Engine running Closely matches the
tachometer reading.
PCIA0041E

DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE AT-125
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Revision: 2006 December 2006 FX35/FX45
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVEPFP:31940
DescriptionNCS001CV

The torque converter clutch solenoid valve is activated, with the gear in D5 , M3, M4 and M5 by the TCM
in response to signals sent from the vehicle speed sensor and accelerator pedal position sensor (throttle
position sensor). Torque converter clutch piston operation will then be controlled.

Lock-up operation, however, is prohibited when A/T fluid temperature is too low.

When the accelerator pedal is depressed (less than 1.0/8) in lock-up condition, the engine speed should
not change abruptly. If there is a big jump in engine speed, there is no lock-up.
CONSULT-II Reference ValueNCS001CW
On Board Diagnosis LogicNCS001CX

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0740 TCC SOLENOID/CIRC” with CONSULT-II or 3rd judgement flicker with-
out CONSULT-II is detected under the following conditions.
–When TCM detects an improper voltage drop when it tries to operate the solenoid valve.
–When TCM detects as irregular by comparing target value with monitor value.
Possible CauseNCS001CY

Torque converter clutch solenoid valve

Harness or connectors
(Solenoid circuit is open or shorted.)
DTC Confirmation ProcedureNCS001CZ
CAUTION:
Always drive vehicle at a safe speed.
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 “SELECTION FROM MENU” in “DATA MONITOR” mode for “A/T” with CONSULT-II and check monitor “VHCL/S SE-A/T”,
“ACCELE POSI” and “SLCT LVR POSI”.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 5 consecutive seconds.
VHCL/S SE-A/T: 80 km/h (50 MPH) or more
ACCELE POSI: 0.5/8 - 1.0/8
SLCT LVR POSI: “D” position
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
5. If DTC is detected go to AT- 1 2 6 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value (Approx.)
TCC SOLENOID Slip lock-up is active 0.2 - 0.4 A
Lock-up is active 0.4 - 0.6 A
BCIA0031E

DTC P1705 THROTTLE POSITION SENSOR AT-131
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Revision: 2006 December 2006 FX35/FX45
DTC P1705 THROTTLE POSITION SENSORPFP:22620
DescriptionNCS001DN
Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor, etc. The actuator sends a signal to the ECM, and ECM sends signals to TCM with CAN com-
munication.
CONSULT-II Reference ValueNCS001DO
On Board Diagnosis LogicNCS001DP

This is not an OBD-II self-diagnostic item.

Diagnostic trouble code “P1705 TP SEN/CIRC A/T” with CONSULT-II or 15th judgement flicker without
CONSULT-II is detected when TCM does not receive the proper accelerator pedal position signals (input
by CAN communication) from ECM.
Possible CauseNCS001DQ
Harness or connectors
(Sensor circuit is open or shorted.)
DTC Confirmation ProcedureNCS001DR
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 “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Touch “START”.
4. Start engine and let it idle for 1 second.
5. If DTC is detected, go to AT- 1 3 2 , "
Diagnostic Procedure" .
Item name Condition Display value (Approx.)
ACCELE POSI Released accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
BCIA0031E

AT-132
DTC P1705 THROTTLE POSITION SENSOR
Revision: 2006 December 2006 FX35/FX45
Diagnostic ProcedureNCS001DS
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to AT- 9 2 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 2 , "Diagnostic Pro-
cedure without CONSULT-II" .
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 1 0 4 , "DTC U1000 CAN COMMUNICATION LINE" .
NO >> GO TO 2.
2. CHECK DTC WITH TCM
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Depress accelerator pedal and read out the value of “ACCELE POSI”.
4. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT- II. Refer to AT- 9 2 , "
SELF-DIAGNOSTIC RESULT MODE" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK DTC WITH ECM
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “ENGINE” with CON- SULT-II. Refer to EC-119, "
CONSULT-II Function (ENGINE)"
(for VQ35DE) or EC-780, "CONSULT-II Function (ENGINE)"
(for VK45DE).
OK or NG
OK >> GO TO 4.
NG >> Check the DTC detected item. Refer to EC-119, "
CON-
SULT-II Function (ENGINE)" (for VQ35DE) or EC-780,
"CONSULT-II Function (ENGINE)" (for VK45DE).

If CAN communication line is detected, go to AT- 1 0 4 ,
"DTC U1000 CAN COMMUNICATION LINE" .
4. CHECK DTC
Perform AT- 1 3 1 , "
DTC Confirmation Procedure" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 5.
Item name Condition Display value
(Approx.)
ACCELE POSI Released accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
PCIA0070E
BCIA0030E

DTC P1705 THROTTLE POSITION SENSOR AT-133
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Revision: 2006 December 2006 FX35/FX45
5. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT- 1 7 9 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT" .
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6. DETECT MALFUNCTIONING ITEM
Check the following.

A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 3 9 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Repair or replace damaged parts.