2005 INFINITI FX35 check engine

AT-62
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
3. CHECK ENGINE BRAKE
Check engine brake.
Does engine braking effectively reduce speed in M1 position?
YES >> 1. Stop the vehicle. 2. Perform self-diagnostics. Refer to AT- 9 3 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 ,
"Diagnostic Procedure without CONSULT-II" .
NO >> Enter a check mark at “Vehicle Does Not Decelerate By Engine Brake” on the AT- 4 7 , "
DIAGNOS-
TIC WORKSHEET" , then continue trouble diagnosis.
Vehicle Speed at Which Gear Shifting OccursACS002M4
2WD MODELS

At half throttle, the accelerator opening is 4/8 of the full opening.
AW D M OD E LS

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

At half throttle, the accelerator opening is 4/8 of the full opening.
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 66 - 74
(41 - 46) 106 - 114
(66 - 71) 165 - 173
(103 - 108) 236 - 244
(147 - 152) 232 - 240
(144 - 149) 145- 153
(90 - 95) 89 - 97
(55 - 60) 41 - 49
(25 - 30)
Half throttle 52 - 60
(32 - 37) 83 - 91
(52 - 57) 127 - 135
(79 - 84) 159 - 167
(99 - 104) 104 - 112
(65 - 70) 75 - 83
(47 - 52) 34 - 42
(21 - 26) 9 - 17
(6 - 11)
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 60 - 68
(37 - 42) 96 - 104
(60 - 65) 150 - 158
(93 - 98) 214 - 222
(133 - 138) 210 - 218
(130 - 135) 132 - 140
(82 - 87) 81 - 89
(50 - 55) 37 - 45
(23 - 28)
Half throttle 47 - 55
(29 - 34) 75 - 83
(47 - 52) 115 - 123
(71 - 76) 144 - 152
(89 - 94) 95 - 103
(59 - 64) 68 - 76
(42 - 47) 31 - 39
(19 - 24) 9 - 17
(6 -11)
Engine model VK45DE
Throttle position Vehicle speed km/h (MPH)
D
1 → D2D2 → D3D3 → D4D4 → D5D5 → D4D4 → D3D3 → D2D2 → D1
Full throttle 62 - 70
(39 - 43) 98 - 106
(61 - 66) 153 - 161
(95 - 100) 220 - 228
(137 - 142) 216 - 224
(134 - 139) 137 - 145
(85 - 90) 85 - 93
(53 - 58) 39 - 47
(24 - 29)
Half throttle 29 - 37
(18 - 23) 59 - 67
(37 - 42) 101 - 109
(63 - 68) 161 - 169
(100 - 105) 108 - 116
(67 - 72) 66 - 74
(41 - 46) 38 - 46
(24 - 29) 22 - 30
(14 - 19)

AT-64
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Symptom ChartACS0080Q

The diagnostics item numbers show the sequence for inspection. Check in order from Item 1.

Overhaul and check inside the A/T only if A/T fluid condition is NG. Refer to AT- 5 2 , "A/T Fluid Condition
Check" .
No. Items Symptom Condition Diagnostic Item Reference
page
1 Shift
Shock Large shock. (“N”
→
“D” position)
Refer to AT-197,
"Large Shock (“N” to
“D” Position)" . ON vehicle 1. Engine idle speed
EC-83
(for
VQ35DE)
or EC-774

(for
VK45DE)
2. Engine speed signal AT- 1 2 3
3. Accelerator pedal position sensorAT- 1 3 3
4. Control linkage adjustmentAT- 2 3 5
5. A/T fluid temperature sensorAT- 1 3 6
6. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 5,
AT- 1 5 4
7. CAN communication line AT- 1 0 6
8. A/T fluid level and state AT- 5 2
9. Line pressure testAT- 5 4
10. Control valve with TCMAT- 2 4 3
OFF vehicle 11. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18, "Cross-Sectional View (2WD Models)" or AT- 1 9 , "Cross-
Sectional View (AWD Models)" ) AT- 2 9 0
2
Shock is too large
when changing D1 →
D
2 or M1 → M2 . ON vehicle 1. Accelerator pedal position sensor
AT- 1 3 3
2. Control linkage adjustmentAT- 2 3 5
3. ATF pressure switch 5 and direct clutch solenoid valve AT- 1 7 9,
AT- 1 5 8
4. CAN communication line AT- 1 0 6
5. Engine speed signalAT- 1 2 3
6. Turbine revolution sensorAT- 1 4 1
7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
8. A/T fluid level and state AT- 5 2
9. Control valve with TCMAT- 2 4 3
OFF vehicle 10. Direct clutch AT- 3 2 6

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-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

TROUBLE DIAGNOSIS AT-103
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Revision: 2005 July 2005 FX
Diagnostic Procedure without CONSULT-IIACS008CZ
OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
Refer to EC-144, "Generic Scan Tool (GST) Function" (for VQ35DE) or EC-835, "Generic Scan Tool (GST)
Function" (for VK45DE).
OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Refer to EC-69, "Malfunction Indicator Lamp (MIL)" (for VQ35DE) or EC-760, "Malfunction Indicator Lamp
(MIL)" (for VK45DE).
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Description
In the unlikely event of a malfunction in the electrical system, when the ignition switch is switched “ON”, the A/
T CHECK indicator lamp lights up for 2 seconds, then flashes for 8 seconds. If there is no malfunction, when
the ignition switch is turned “ON”, the indicator lamp lights up for 2 seconds. As a method for locating the sus-
pect 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 9 3
.
2. JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch “OFF”.
2. Push 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.
>> GO TO 3.
3. JUDGEMENT PROCEDURE STEP 2
1. Move the selector lever to the manual shift gate side. (Manual mode switch “ON”.)
2. Release brake pedal. (Stop lamp switch signal “OFF”.)
3. Move the selector lever to “D” position. (Manual mode switch “OFF”.)
4. Depress brake pedal. (Stop lamp switch signal “ON”.)
5. Release brake pedal. (Stop lamp switch signal “OFF”.)
6. Depress accelerator pedal fully and release it.
>> GO TO 4.

AT-104
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
4. CHECK SELF-DIAGNOSIS CODE
Check A/T CHECK indicator lamp. Refer to AT- 1 0 4 , "
Judgement Self-diagnosis Code" .
If the system does not go into self-diagnostics. Refer to AT- 11 4 , "
DTC P0705 PARK/NEUTRAL POSITION
SWITCH" , AT- 1 7 0 , "DTC P1815 MANUAL MODE SWITCH" , AT- 1 8 7 , "CLOSED THROTTLE POSITION AND
WIDE OPEN THROTTLE POSITION CIRCUIT" , AT- 1 8 8 , "BRAKE SIGNAL CIRCUIT" .
>> DIAGNOSIS END
Judgement Self-diagnosis Code
If there is a malfunction, the lamp lights up for the time corresponding to the suspect circuit.
No. Malfunctioning item No. Malfunctioning item
1 Revolution sensor AT- 11 8
10 A/T fluid temperature sensor AT-136
2 Direct clutch solenoid valve AT- 1 5 8 , AT- 1 6 011 Turbine revolution sensor AT-141
3 Torque converter clutch solenoid valve
AT- 1 2 5 , AT-
12712 A/T interlock AT-145
4 Line pressure solenoid valve AT- 1 2 913 A/T 1st engine braking AT- 1 4 8
5 Input clutch solenoid valve AT-150 , AT-15214 Start signal AT-109
6 Front brake solenoid valve AT-154 , AT-15615 Accelerator pedal position sensor AT-133
7 Low coast brake solenoid valve AT-166 , AT-16816 Engine speed signal AT-123
8 High and low reverse clutch solenoid valve
AT-162 ,
AT- 1 6 417 CAN communication line AT-106
9 PNP switch AT- 11 4
SCIA5767E

AT-108
DTC U1000 CAN COMMUNICATION LINE
Revision: 2005 July 2005 FX
TCM terminals and data are reference value. Measured between each terminal and ground.
Diagnostic ProcedureACS002MF
1. CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-II
1. Turn ignition switch ON and start engine.
2. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT- II.
Is any malfunction of the
“CAN COMM CIRCUIT” indicated?
YES >> Print out CONSULT-II screen, GO TO LAN section. Refer to LAN-5, "
Precautions When Using CONSULT-II"
.
NO >> INSPECTION END
Terminal Wire
color Item Condition Data (Approx.)
3 L CAN-H – –
8 R CAN-L – –
PCIA0061E

DTC P0615 START SIGNAL CIRCUIT AT-109
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Revision: 2005 July 2005 FX
DTC P0615 START SIGNAL CIRCUITPFP:25230
DescriptionACS003LO

TCM prohibits cranking other than at “P” or “N” position.
CONSULT-II Reference ValueACS003K2
On Board Diagnosis LogicACS002MH

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

Diagnostic trouble code “P0615 STARTER RELAY/CIRC” with CONSULT-II or 14th judgement flicker
without CONSULT-II is detected when starter relay is switched ON other than at “P” or “N” position. (Or
when switched OFF at “P” or “N” position).
Possible CauseACS003LP

Harness or connectors
[Starter relay and TCM circuit is open or shorted.]

Starter relay circuit
DTC Confirmation ProcedureACS002MJ
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 “STARTER
RELAY” ON/OFF.
3. Start engine.
4. Drive vehicle for at least 2 consecutive seconds.
5. If DTC is detected, go to AT- 111 , "
Diagnostic Procedure" .
Item name Condition Display value
STARTER RELAY Selector lever in “N” and “P” positions. ON
Selector lever in other positions. OFF
BCIA0031E