2005 INFINITI FX35 vq35de

TROUBLE DIAGNOSIS AT-87
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Revision: 2005 July 2005 FX
64
Others Extremely large
creep. ON vehicle 1. Engine idle speed EC-83
(for
VQ35DE)
or EC-774

(for
VK45DE)
2. CAN communication line AT-106
3. ATF pressure switch 5AT-179
OFF vehicle 4. Torque converter AT-290
65 With selector lever in
“P” position, vehicle
does not enter parking
condition or, with
selector lever in
another position, park-
ing condition is not
cancelled.
Refer to AT-195, "
In
“P” Position, Vehicle
Moves When Pushed"
. ON vehicle
1. PNP switch
AT- 11 4
2. Control linkage adjustmentAT-235
OFF vehicle 3. Parking pawl components AT-
255(2WD
models) or AT-290

(AWD
models)
66 Vehicle runs with
transmission in “P”
position. ON vehicle
1. PNP switch
AT- 11 4
2. A/T fluid level and state AT- 5 2
3. Control linkage adjustmentAT-235
4. Control valve with TCMAT-243
OFF vehicle 5. Parking pawl components AT-
255(2WD
models) or
AT-290

(AWD
models)
6. Gear system AT-278
67 Vehicle runs with
transmission in “N”
position.
Refer to AT-196, "In
“N” Position, Vehicle
Moves" . ON vehicle
1. PNP switch
AT- 11 4
2. A/T fluid level and state AT- 5 2
3. Control linkage adjustmentAT-235
4. Control valve with TCMAT-243
OFF vehicle 5. Input clutch
AT-313
6. Gear systemAT-278
7. Direct clutchAT-326
8. Reverse brakeAT-290
9. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 8 , "
Cross-Sectional View (2WD Models)" or AT- 1 9 ,
"Cross-Sectional View (AWD Models)" ) AT-290
10. Low coast brake (Parts behind drum support is impossi-
ble to perform inspection by disassembly. Refer to AT-18,
"Cross-Sectional View (2WD Models)" or AT-19, "Cross-
Sectional View (AWD Models)" ) AT-290
No. Items Symptom Condition Diagnostic Item
Reference
page

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-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.

DTC P0700 TCM AT-113
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Revision: 2005 July 2005 FX
DTC P0700 TCMPFP:31036
DescriptionACS006DU
The TCM consists of a microcomputer and connectors for signal input and output and for power supply. The
TCM controls the A/T.
On Board Diagnosis LogicACS006DV

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0700* TCM” with CONSULT-II is detected when TCM is malfunctioning.
*: For VQ35DE engine.
Possible CauseACS006DW
TCM.
DTC Confirmation ProcedureACS006DX
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” or “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine.
4. Run engine for at least 2 consecutive seconds at idle speed.
5. If DTC is detected, go to AT- 11 3 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Diagnostic ProcedureACS006DY
1. CHECK DTC
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF DIAG RESULTS” mode for “A/T” with CONSULT-II.
3. Touch “ERASE”.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Perform DTC confirmation procedure, AT- 11 3 , "
DTC Confirmation Procedure" .
Is the
“P0700 TCM” displayed again?
YES >> Replace the control valve with TCM. Refer to AT- 2 4 3 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NO >> INSPECTION END
BCIA0031E

DTC P0725 ENGINE SPEED SIGNAL AT-123
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Revision: 2005 July 2005 FX
DTC P0725 ENGINE SPEED SIGNALPFP:24825
DescriptionACS002MV
The engine speed signal is sent from the ECM to the TCM.
CONSULT-II Reference ValueACS003K5
On Board Diagnosis LogicACS002MW

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0725* ENGINE SPEED SIG” with CONSULT-II or 16th judgement flicker with-
out CONSULT-II is detected when TCM does not receive the ignition signal from ECM during engine
cranking or running.
*: For VQ35DE engine.
Possible CauseACS002MX

Harness or connectors
(ECM to TCM circuit is open or shorted.)
DTC Confirmation ProcedureACS002MY
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 “MAIN SIGNALS“ in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine and maintain the following conditions for at least 10 consecutive seconds.
VHCL SPEED SE: 10 km/h (6 MPH) or more
ACCELE POSI: More than 1.0/8
Selector lever: “D” position
4. If DTC is detected, go to AT- 1 2 4 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value (rpm)
ENGINE SPEED Engine running Closely matches the tachometer reading.
BCIA0031E

AT-124
DTC P0725 ENGINE SPEED SIGNAL
Revision: 2005 July 2005 FX
Diagnostic ProcedureACS002MZ
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to AT- 9 3 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 , "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 6 , "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.
With GST
Follow the procedure “WITH CONSULT-II”.
OK or NG
OK >> GO TO 3.
NG >> Check the ignition signal circuit.

Refer to EC-648, "IGNITION SIGNAL" (for VQ35DE) or EC-1339, "IGNITION SIGNAL" (for
VK45DE).
3. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to 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 8 3 , "
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.

The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 4 3 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Repair or replace damaged parts.
Item name Condition Display value (rpm)
ENGINE SPEED Engine running Closely matches the
tachometer reading.
PCIA0041E

DTC P1705 THROTTLE POSITION SENSOR AT-133
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Revision: 2005 July 2005 FX
DTC P1705 THROTTLE POSITION SENSORPFP:22620
DescriptionACS002O0
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 ValueACS006C4
On Board Diagnosis LogicACS002O1

This is 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.
*: For VQ35DE engine.
Possible CauseACS002O2

Harness or connectors
(Sensor circuit is open or shorted.)
DTC Confirmation ProcedureACS002O3
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 4 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value (Approx.)
ACCELE POSI Released accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
BCIA0031E

AT-134
DTC P1705 THROTTLE POSITION SENSOR
Revision: 2005 July 2005 FX
Diagnostic ProcedureACS002O4
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to AT- 9 3 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 , "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 6 , "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 3 , "
SELF-DIAGNOSTIC RESULT MODE"
With GST
Follow the procedure “With CONSULT-II”.
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-132, "
CONSULT-II Function (ENGINE)"
(for VQ35DE) or EC-822, "CONSULT-II Function (ENGINE)"
(for VK45DE).
With GST
Follow the procedure “With CONSULT-II”.
OK or NG
OK >> GO TO 4.
NG >> Check the DTC detected item. Refer to EC-132, "
CON-
SULT-II Function (ENGINE)" (for VQ35DE) or EC-822,
"CONSULT-II Function (ENGINE)" (for VK45DE).

If CAN communication line is detected, go to AT- 1 0 6 , "DTC U1000 CAN COMMUNICATION
LINE" .
4. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 3 3 , "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. 8/8
PCIA0070E
BCIA0030E