2004 INFINITI FX35 Service Manual

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Page 201 of 4449

INFINITI FX35 2004 Service Manual AT-124
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureACS007BN
1. CHECK INPUT SIGNALS
With CONSULT-II
1. Turn ignition switch “ON”. (D

Page 202 of 4449

INFINITI FX35 2004 Service Manual DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
AT-125
D
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B
AT
Revision: 2004 November 2004 FX35/FX45
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)PFP:31940
DescriptionACS007BO
This malfunction

DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
AT-125
D
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B
AT
Revision: 2004 November 2004 FX35/FX45
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)PFP:31940
DescriptionACS007BO
This malfunction is detected when the A/T does not shift into 5th gear position or the torque converter clutch
does not lock-up as instructed by the TCM. This is not only caused by electrical malfunction (circuits open or
shorted) but also by mechanical malfunction such as control valve sticking, improper solenoid valve operation,
etc.
CONSULT-II Reference ValueACS007BP
On Board Diagnosis LogicACS007BQ
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “A/T TCC S/V FNCTN” with CONSULT-II or P0744 without CONSULT-II is
detected under the following conditions.
–When A/T cannot perform lock-up even if electrical circuit is good.
–When TCM detects as irregular by comparing reference value with slip rotation.
Possible CauseACS007BR
Harness or connectors
(Solenoid circuit is open or shorted.)
Torque converter clutch solenoid valve
Hydraulic control circuit
DTC Confirmation ProcedureACS007BS
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. Start engine and Select “TCC SOL FUNCTN CHECK” of “DTC
WORK SUPPORT” mode for “A/T” with CONSULT-II and touch
“START”.
2. Accelerate vehicle to more than 80 km/h (50 MPH) and maintain
the following condition continuously until “TESTING” has turned
to “COMPLETE”. (It will take approximately 30 seconds after
“TESTING” shows.)
ACCELE POSI: More than 1.0/8 (at all times during step 4)
TCC SOLENOID: 0.4 - 0.6 A
Selector lever: “D” position
[Reference speed: Constant speed of more than 80 km/h (50
MPH)]
–Make sure “GEAR” shows “5”.
–For shift schedule, refer to AT- 3 4 9 , "Vehicle Speed When Performing and Releasing Complete
Lock-up" .
–If “TESTING” does not appear on CONSULT-II for a long time, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than P0744 is shown, refer to applicable “TROUBLE DIAGNOSIS FOR
DTC”.
3. Make sure that “OK” is displayed. (If “NG” is displayed, refer to “DIAGNOSTIC PROCEDURE”.)
Refer to AT- 1 2 6 , "
Diagnostic Procedure" .
Refer to shift schedule, AT- 3 4 9 , "
Vehicle Speed When Performing and Releasing Complete Lock-up" .
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
SAT014K

Page 203 of 4449

INFINITI FX35 2004 Service 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 C

Page 204 of 4449

INFINITI FX35 2004 Service Manual 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 sol

Page 205 of 4449

INFINITI FX35 2004 Service Manual 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 star

Page 206 of 4449

INFINITI FX35 2004 Service Manual DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
AT-129
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AT
Revision: 2004 November 2004 FX35/FX45
DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)PFP:31036
DescriptionAC

Page 207 of 4449

INFINITI FX35 2004 Service Manual AT-130
DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — AT — POWERACS007C4
TCWM0250E

Page 208 of 4449

INFINITI FX35 2004 Service Manual DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
AT-131
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Revision: 2004 November 2004 FX35/FX45
TCM terminals and data are reference value. Measured between each terminal

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