engine INFINITI FX35 2004 Owners Manual

AT-126
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
Revision: 2004 November 2004 FX35/FX45
WITH GST
Follow the procedure “With CONSULT-II”.
Diagnostic ProcedureACS007BT
1. CHECK INPUT SIGNALS
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 the engine.
4. Read out the value of “TCC SOLENOID” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 9 4 , "
SELF-DIAGNOSTIC RESULT MODE" .
Do the self-diagnostic results indicate
“TCM-POWER SUPPLY”?
YES >> Check the TCM power circuit. Refer to AT- 1 2 9 , "DTC P1701 TRANSMISSION CONTROL MOD-
ULE (POWER SUPPLY)" .
NO >> GO TO 3.
3. DETECT MALFUNCTIONING ITEM
Check the following items:

The A/T assembly harness connector terminals for damage or loose connection with harness connector.
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 >> Repair or replace damaged parts.
4. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 2 5 , "DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value (Approx.)
TCC SOLENOIDWhen performing slip lock-up 0.2 - 0.4 A
When performing lock-up 0.4 - 0.6 A
SCIA4793E

DTC P0745 LINE PRESSURE SOLENOID VALVE
AT-127
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Revision: 2004 November 2004 FX35/FX45
DTC P0745 LINE PRESSURE SOLENOID VALVEPFP:31940
DescriptionACS007BU
The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in
response to a signal sent from the TCM.
The line pressure duty cycle value is not consistent when the closed throttle position signal is “ON”.
To confirm the line pressure duty cycle at low pressure, the accelerator (throttle) should be open until
the closed throttle position signal is “OFF”.
CONSULT-II Reference ValueACS007BV
On Board Diagnosis LogicACS007BW

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “L/PRESS SOL/CIRC” with CONSULT-II or P0745 without 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 CauseACS007BX

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

Line pressure solenoid valve
DTC Confirmation ProcedureACS007BY
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” and select “DATA MONITOR” mode for
“ENGINE” with CONSULT-II.
2. Engine start and wait at least 5 second.
3. If DTC is detected, go to “AT- 1 2 8 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “With CONSULT-II”.
Item name Condition Display value (Approx.)
LINE PRES SOL During driving 0.2 - 0.6 A
SAT014K

AT-128
DTC P0745 LINE PRESSURE SOLENOID VALVE
Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureACS007BZ
1. CHECK INPUT SIGNALS
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 the engine.
4. Read out the value of “LINE PRES SOL” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT- 9 4 , "
SELF-DIAGNOSTIC RESULT MODE" .
Do the self-diagnostic results indicate
“TCM-POWER SUPPLY”?
YES >> Check the TCM power circuit. Refer to AT- 1 2 9 , "DTC P1701 TRANSMISSION CONTROL MOD-
ULE (POWER SUPPLY)" .
NO >> GO TO 3.
3. DETECT MALFUNCTIONING ITEM
Check the following items:

The A/T assembly harness connector terminals for damage or loose connection with harness connector.
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 >> Repair or replace damaged parts.
4. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 2 7 , "DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value (Approx.)
LINE PRES SOL During driving 0.2 - 0.6 A
SCIA4793E

DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
AT-129
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Revision: 2004 November 2004 FX35/FX45
DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)PFP:31036
DescriptionACS007C0
When the power supply to the TCM is cut “OFF”, for example because the battery is removed, and the self-
diagnostics memory function stops, malfunction is detected.
On Board Diagnosis LogicACS007C1

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

Diagnostic trouble code “TCM-POWER SUPPLY” with CONSULT-II is detected when TCM does not
receive the voltage signal from the battery power supply.

This is not a malfunction message. (Whenever shutting “OFF” a power supply to the TCM, this message
appears on the screen.)
Possible CauseACS007C2
Harness or connectors
(Battery or ignition switch and TCM circuit is open or shorted.)
DTC Confirmation ProcedureACS007C3
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. Wait for at least 2 consecutive seconds.
4. If DTC is detected, go to AT- 1 3 1 , "
Diagnostic Procedure" .
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DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
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Revision: 2004 November 2004 FX35/FX45
TCM terminals and data are reference value. Measured between each terminal and ground.
Diagnostic ProcedureACS007C5
1. CHECK TCM POWER SOURCE STEP 1
1. Turn ignition switch “OFF”.
2. Disconnect A/T assembly harness connector.
3. Check voltage between A/T assembly harness connector and
ground. Refer to AT- 1 3 0 , "
Wiring Diagram — AT — POWER" .
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK TCM POWER SOURCE STEP 2
1. Disconnect A/T assembly harness connector.
2. Turn ignition switch “ON”. (Do not start engine.)
3. Check voltage between A/T assembly harness connector and
ground. Refer to AT- 1 3 0 , "
Wiring Diagram — AT — POWER" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
TerminalWire
colorItem Condition Data (Approx.)
1LGPower supply
(Memory back-up)Always Battery voltage
2LGPower supply
(Memory back-up)Always Battery voltage
5 B Ground Always 0V
6 Y Power supply– Battery voltage
–0V
10 B Ground Always 0V
Item ConnectorTerminal
(Wire color)Voltage
TCM F441 (LG) - Ground
Battery voltage
2 (LG) - Ground
6 (Y) - Ground 0V
SCIA2104E
Item ConnectorTerminal
(Wire color)Voltag e
TCM F441 (LG) - Ground
Battery voltage 2 (LG) - Ground
6 (Y) - Ground
SCIA2105E

DTC P1702 TRANSMISSION CONTROL MODULE (RAM)
AT-133
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Revision: 2004 November 2004 FX35/FX45
DTC P1702 TRANSMISSION CONTROL MODULE (RAM)PFP:31036
DescriptionACS007C6
The TCM consists of a microcomputer and connectors for ground, power supply and for signal inputs and out-
puts. The TCM controls the A/T.
On Board Diagnosis LogicACS007C7

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

Diagnostic trouble code “TCM·RAM” with CONSULT-II is detected when TCM memory RAM is malfunc-
tioning.
Possible CauseACS007C8
TCM.
DTC Confirmation ProcedureACS007C9
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. Start engine.
4. Run engine for at least 2 consecutive seconds at idle speed.
5. If DTC is detected, go to AT- 1 3 3 , "
Diagnostic Procedure" .
Diagnostic ProcedureACS007CA
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- 1 3 3 , "
DTC Confirma-
tion Procedure" .
Is the
“TCM·RAM” displayed again?
YES >> Replace the control valve with TCM. Refer to AT- 2 4 2 ,
"Control Valve with TCM and A/T Fluid Temperature
Sensor 2" .
NO >>INSPECTION END
SAT014K
SCIA5304E

AT-134
DTC P1703 TRANSMISSION CONTROL MODULE (ROM)
Revision: 2004 November 2004 FX35/FX45
DTC P1703 TRANSMISSION CONTROL MODULE (ROM)PFP:31036
DescriptionACS007CB
The TCM consists of a microcomputer and connectors for ground, power supply and for signal inputs and out-
puts. The TCM controls the A/T.
On Board Diagnosis LogicACS007CC

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

Diagnostic trouble code “TCM·ROM” with CONSULT-II is detected when TCM memory ROM is malfunc-
tioning.
Possible CauseACS007CD
TCM.
DTC Confirmation ProcedureACS007CE
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. Start engine.
4. Run engine for at least 2 consecutive seconds at idle speed.
5. If DTC is detected, go to AT- 1 3 4 , "
Diagnostic Procedure" .
Diagnostic ProcedureACS007CF
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- 1 3 4 , "
DTC Confirma-
tion Procedure" .
Is the
“TCM·ROM” displayed again?
YES >> Replace the control valve with TCM. Refer to AT- 2 4 2 ,
"Control Valve with TCM and A/T Fluid Temperature
Sensor 2" .
NO >>INSPECTION END
SAT014K
SCIA5304E

DTC P1704 TRANSMISSION CONTROL MODULE (EEPROM)
AT-135
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Revision: 2004 November 2004 FX35/FX45
DTC P1704 TRANSMISSION CONTROL MODULE (EEPROM)PFP:31036
DescriptionACS007CG
The TCM consists of a microcomputer and connectors for ground, power supply and for signal inputs and out-
puts. The TCM controls the A/T.
On Board Diagnosis LogicACS007CH

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

Diagnostic trouble code “TCM·EEPROM” with CONSULT-II is detected when TCM memory EEPROM is
malfunctioning.
Possible CauseACS007CI
TCM.
DTC Confirmation ProcedureACS007CJ
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. Start engine.
4. Run engine for at least 2 consecutive seconds at idle speed.
5. If DTC is detected, go to AT- 1 3 5 , "
Diagnostic Procedure" .
Diagnostic ProcedureACS007CK
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- 1 3 5 , "
DTC Confirma-
tion Procedure" .
Is the
“TCM·EEPROM” displayed again?
YES >> Replace the control valve with TCM. Refer to AT- 2 4 2 ,
"Control Valve with TCM and A/T Fluid Temperature
Sensor 2" .
NO >>INSPECTION END
SAT014K
SCIA5304E

AT-136
DTC P1705 THROTTLE POSITION SENSOR
Revision: 2004 November 2004 FX35/FX45
DTC P1705 THROTTLE POSITION SENSORPFP:22620
DescriptionACS007CL
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 ValueACS007CM
On Board Diagnosis LogicACS007CN

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “TP SEN/CIRC A/T” with CONSULT-II or P1705* 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 CauseACS007CO
Harness or connectors
(Sensor circuit is open or shorted.)
DTC Confirmation ProcedureACS007CP
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. Start engine and let it idle for 1 second.
4. If DTC is detected, go to “AT- 1 3 6 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “With CONSULT-II”.
Diagnostic ProcedureACS007CQ
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to AT- 9 4 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 , "TCM SELF-
DIAGNOSTIC PROCEDURE (NO TOOLS)" .
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 1 0 5 , "DTC U1000 CAN COMMUNICATION LINE" .
NO >> GO TO 2.
Item name Condition Display value (Approx.)
ACCLE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
THROTTLE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
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DTC P1705 THROTTLE POSITION SENSOR
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Revision: 2004 November 2004 FX35/FX45
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 “ACCLE
POS” and “THROTTLE POSI”.
Check engine speed changes according to throttle position.
4. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-II. Refer to AT- 9 4 , "
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-109, "
CONSULT-II Function" (for
VQ35DE) or EC-759, "
CONSULT-II Function" (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-109, "
CON-
SULT-II Function" (for VQ35DE) or EC-759, "CON-
SULT-II Function" (for VK45DE).

If CAN communication line is detected, go to AT- 1 0 5 , "DTC U1000 CAN COMMUNICATION
LINE" .
4. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 3 6 , "DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
Item name Condition Display value
(Approx.)
ACCLE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
THROTTLE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
PCIA0070E
SAT014K