2007 NISSAN TIIDA low oil pressure

TM-68
< COMPONENT DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
DTC P0734 A/T 4TH GEAR FUNCTION
DTC P0734 A/T 4TH GEAR FUNCTION
DescriptionINFOID:0000000001694328
 This malfunction will not be detected while the OD OFF indicator lamp is indicating another self-diagnosis
malfunction.
 This malfunction is detected when the A/T does not shift into fourth gear position or the torque converter
clutch does not lock up as instructed by the TCM. This is not caused by electrical malfunction (circuits open
or shorted) but by mechanical malfunction such as control valve sticking, improper solenoid valve operation,
malfunctioning oil pump or torque converter clutch, etc.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001694329
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001694330
 This is an OBD self-diagnostic item.
 Diagnostic trouble code “P0734 A/T 4TH GR FNCTN” with CONSULT-III is detected when A/T cannot be
shifted to the 4th gear position even if electrical circuit is good.
 This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by TCM
as follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is much lower than the position (4th) supposed by TCM, the slip ratio will be much
less than normal. In case the ratio does not reach the specified value, TCM judges this diagnosis malfunc-
tion.
This malfunction will be caused when shift solenoid valve A is stuck open or shift solenoid valve B is stuck
closed.
 Gear positions supposed by TCM are as follows.
In case of gear position with no malfunctions: 1, 2, 3 and 4 positions
In case of gear position with shift solenoid valve A stuck open: 2, 2, 3 and 3* positions
In case of gear position with shift solenoid valve B stuck closed: 1, 2, 2 and 1* positions to each gear position
above
*: “P0734 A/T 4TH GR FNCTN” is detected.
Possible CauseINFOID:0000000001694331
 Shift solenoid valve A
 Shift solenoid valve B
 Line pressure solenoid valve
 Each clutch
 Hydraulic control circuit
DTC Confirmation ProcedureINFOID:0000000001694332
CAUTION:
 Always drive vehicle at a safe speed.
 If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
Gear position 1 2 3 4
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
Item name Condition Display value (Approx.)
LINE PRES DTYSmall throttle opening (Low line pressure) ⇔ Large
throttle opening (High line pressure)0% ⇔ 94%

TM-76
< COMPONENT DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
DescriptionINFOID:0000000001694342
 This malfunction will not be detected while the OD OFF indicator lamp is indicating another self-diagnosis
malfunction.
 This malfunction is detected when the A/T does not shift into fourth gear position or the torque converter
clutch does not lock-up as instructed by the TCM. This is not caused by electrical malfunction (circuits open
or shorted) but by mechanical malfunction such as control valve sticking, improper solenoid valve operation,
malfunctioning oil pump or torque converter clutch, etc.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001694343
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001694344
 This is an OBD self-diagnostic item.
 Diagnostic trouble code “P0744 A/T TCC S/V FNCTN” with CONSULT-III is detected when A/T cannot per-
form lock-up even if electrical circuit is good.
 This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by TCM
as follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is much lower than the position (4th) supposed by TCM, the slip ratio will be much
less than normal. In case the ratio does not reach the specified value, TCM judges this diagnosis malfunc-
tion.
This malfunction will be caused when shift solenoid valve B is stuck closed.
 Gear positions supposed by TCM are as follows.
In case of gear position with no malfunctions: 1, 2, 3 and 4 positions
In case of gear position with shift solenoid valve B stuck closed: 1, 2, 2 and 1* positions to each gear position
above
*: “P0744 A/T TCC S/V FNCTN” is detected.
Possible CauseINFOID:0000000001694345
 Line pressure solenoid valve
 Torque converter clutch solenoid valve
 Each clutch
 Hydraulic control circuit
DTC Confirmation ProcedureINFOID:0000000001694346
CAUTION:
 Always drive vehicle at a safe speed.
 If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start engine and select “DATA MONITOR” mode for “A/T” with CONSULT-III.
2. Touch “START”.
3. Make sure that output voltage of A/T fluid temperature sensor is within the range below.
FLUID TEMP SE: 0.4 - 1.5V
If out of range, drive vehicle to decrease voltage (warm up the fluid) or stop engine to increase voltage
(cool down the fluid).
4. Select “TCC S/V FNCTN P0744” of “DTC WORK SUPPORT” mode for “A/T” with CONSULT-III and touch
“START”.
Item name Condition Display value (Approx)
TCC S/V DUTY Lock-up OFF ⇔ Lock-up ON 4% ⇔ 94%

DTC P0745 LINE PRESSURE SOLENOID VALVE
TM-81
< COMPONENT DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
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DTC P0745 LINE PRESSURE SOLENOID VALVE
DescriptionINFOID:0000000001694348
The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in
response to signals sent from the TCM.
The line pressure duty cycle value is not constant when the closed throttle position switch is ON. To
confirm the line pressure duty cycle at low-pressure, the accelerator (throttle) should be open until the
closed throttle position switch is OFF.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001694349
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001694350
 This is an OBD self-diagnostic item.
 Diagnostic trouble code “P0745 LINE PRESSURE S/V” with CONSULT-III or 11th judgement flicker without
CONSULT-III is detected when TCM detects an improper voltage drop while it tries to operate the solenoid
valve.
Possible CauseINFOID:0000000001694351
 Harness or connector
(The solenoid circuit is open or shorted.)
 Line pressure solenoid valve
DTC Confirmation ProcedureINFOID:0000000001694352
CAUTION:
If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode for “A/T” with CONSULT-III.
2. Touch “START”.
3. Depress accelerator pedal completely and wait at least 1 second.
4. If the check result is NG, go to TM-81, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
WITHOUT CONSULT-III
1. Start engine.
2. With brake pedal depressed, shift the lever from “P”→“N”→“D”→“N”→“P” positions.
3. Perform self-diagnosis. Refer to TM-38, "
Diagnosis Procedure without CONSULT-III".
4. If the check result is NG, go to TM-81, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001694354
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-III.
3. Read out the value of “LINE PRES DTY” while driving. Check the value changes according to driving
speed.
Item name Condition Display value (Approx.)
LINE PRES DTYSmall throttle opening (Low line pressure) ⇔ Large
throttle opening (High line pressure)0% ⇔ 94%

TM-124
< ECU DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
TCM
The SELF-DIAGNOSIS results will be as follows:
 The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.
 During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
FAIL-SAFE FUNCTION
The following fail-safe functions allow vehicles to be driven even when sensor, switch or solenoid malfunction
occurs.
Vehicle Speed Sensor·A/T (Revolution Sensor)
Vehicle speed sensor·MTR signal is input from combination meter.
Accelerator Pedal Position Sensor Signal and Throttle Position Sensor Signal
TCM controls the throttle opening angle to a predetermined fixed position to enable driving if a malfunctioning
signal is input to TCM.
PNP Switch
When the multiple PNP switch signals are input to TCM, the priority of selector lever position becomes “D”,
“N”, “R”, “2” and “1” in order by internal TCM determination.
The use of 4th gear is inhibited until normal operation resumes. Because the hydraulic circuit of the control
valve is switched by manual valve according to the selector lever position, however, actual operating condition
of vehicle becomes as follows.
Shift Solenoid Valve A and B
If non-standard solenoid signal is sent to TCM, use of certain gears is limited. Refer to chart shown below.
●: Solenoid ON
×: Solenoid OFF
–: Non-standard condition
Line Pressure Solenoid Valve
If non-standard solenoid signal is sent to TCM, line pressure solenoid valve is turned OFF to achieve maxi-
mum oil pressure.
Torque Converter Clutch Solenoid Valve
Actual lever position PNP switch input signal Running status
“P” “P” position and other position signals P
“R” “R” position and other position signals R
“N” “N” position and other position signals N
“D” “D” position and other position signals D
1⇔D2⇔D3⇔D4
“2”“2” position and other position signals (Except “1” position) 21⇔22⇔23
“2” position and “1” position signals 21⇔22
“1”“1” position and other position signals (Except “2” position) 11⇔12⇔13
“1” position and “2” position signals 11⇔12
Shift positionNormalMalfunction in solenoid
valve AMalfunction in solenoid
valve BMalfunction in solenoid
valves A and B
A B Gear A B Gear A B Gear A B Gear
“D” position●●1st –●→×
3rd ●→×–
3rd ––
3rd ×●2nd –●→× ×–––
××3rd – x×–––
●×4th – x●→×–––
“2” position●●1st –●→×●→×–––
×●2nd –●→× ×–––
××3rd – x×–––
“1” position●●1st –●→×●→×–––
×●2nd –●→× ×–––
××3rd – x×–––

SYSTEM SYMPTOM
TM-133
< SYMPTOM DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
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Slips/Will Not EngageVehicle will not run in
“D”, “1”, “2” positions
(but runs in R posi-
tion). Clutch slips.
Very poor accelera-
tion.ON vehicle1. A/T fluid levelTM-171
2. Stall testTM-175
3. Line pressure testTM-178
4. Line pressure solenoid valveTM-81
5. Control valve assemblyTM-191
6. Accumulator N-DTM-191
OFF vehicle7. Reverse clutchTM-258
8. High clutchTM-262
9. Forward clutchTM-267
10. Forward one-way clutchTM-278
11. Low one-way clutchTM-222
Clutches or brakes
slip somewhat in start-
ing.ON vehicle1. A/T fluid levelTM-171
2. Control cable adjustmentTM-204
3. Accelerator pedal position sensorEC-297
4. Line pressure testTM-178
5. Line pressure solenoid valveTM-81
6. Control valve assemblyTM-191
7. Accumulator N-DTM-191
OFF vehicle8. Forward clutchTM-267
9. Reverse clutchTM-258
10. Low & reverse brakeTM-273
11. Oil pumpTM-240
12. Torque converterTM-222
No creep at all.
TM-142
, TM-144
ON vehicle1. A/T fluid levelTM-1712. Line pressure testTM-178
3. Control valve assemblyTM-191
OFF vehicle4. Forward clutchTM-2675. Oil pumpTM-240
6. Torque converterTM-222
Almost no shock or
clutches slipping in
change from D
1 to D2.ON vehicle1. A/T fluid levelTM-171
2. Accelerator pedal position sensorEC-297
3. Line pressure testTM-178
4. Accumulator servo releaseTM-191
5. Control valve assemblyTM-191
OFF vehicle 6. Brake bandTM-287
Items Symptom Condition Diagnostic item Reference page

SYSTEM SYMPTOM
TM-135
< SYMPTOM DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
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Slips/Will Not EngageRaces extremely fast
or slips in changing
from D
3 to D2 when
depressing accelera-
tor pedal. ON vehicle1. A/T fluid levelTM-171
2. Accelerator pedal position sensor EC-297
3. Line pressure testTM-178
4. Line pressure solenoid valveTM-81
5. Shift solenoid valve BTM-89
6. Control valve assemblyTM-191
OFF vehicle7. Brake bandTM-2878. High clutchTM-262
Races extremely fast
or slips in changing
from D
4 or D3 to D 1
when depressing ac-
celerator pedal.ON vehicle1. A/T fluid levelTM-171
2. Accelerator pedal position sensorEC-297
3. Line pressure testTM-178
4. Line pressure solenoid valveTM-81
5. Shift solenoid valve ATM-85
6. Shift solenoid valve BTM-89
7. Control valve assemblyTM-191
OFF vehicle8. Forward clutchTM-2679. Forward one-way clutchTM-278
10. Low one-way clutchTM-222
Vehicle will not run in
any position.ON vehicle1. A/T fluid levelTM-171
2. Control cable adjustmentTM-204
3. Line pressure testTM-178
4. Line pressure solenoid valveTM-81
OFF vehicle5. Oil pumpTM-240
6. High clutchTM-262
7. Brake bandTM-287
8. Low & reverse brakeTM-273
9. Torque converterTM-222
10. Parking componentsTM-213
OthersEngine cannot be
started in “P” and “N”
positions.
TM-140
ON vehicle1. Ignition switch and starterSTR-62. Control cable adjustmentTM-204
3. PNP switch adjustmentTM-195
Engine starts in posi-
tions other than “P”
and “N”.ON vehicle1. Control cable adjustmentTM-204
2. PNP switch adjustmentTM-195
Items Symptom Condition Diagnostic item Reference page

TM-136
< SYMPTOM DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
SYSTEM SYMPTOM
OthersTransaxle noise in“ P”
and “N” positions.ON vehicle1. A/T fluid levelTM-171
2. Line pressure testTM-178
3. Accelerator pedal position sensorEC-297
4. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRTM-52 and TM-97
OFF vehicle5. Oil pumpTM-2406. Torque converterTM-222
Vehicle moves when
changing into “P” po-
sition or parking gear
does not disengage
when shifted out of “P”
position.ON vehicle 1. Control cable adjustmentTM-204
OFF vehicle 2. Parking componentsTM-213
Vehicle runs in “N” po-
sition.
TM-141
ON vehicle 1. Control cable adjustmentTM-204
OFF vehicle2. Forward clutchTM-2673. Reverse clutchTM-258
4. Overrun clutchTM-267
Vehicle braked when
shifting into “R” posi-
tion.ON vehicle1. A/T fluid levelTM-171
2. Control cable adjustmentTM-204
3. Line pressure testTM-178
4. Line pressure solenoid valveTM-81
5. Control valve assemblyTM-191
OFF vehicle6. High clutchTM-2627. Brake band TM-287
8. Forward clutchTM-267
9. Overrun clutchTM-267
Excessive creep. ON vehicle 1. Engine idling speedEC-26
Engine stops when
shifting lever into “R”,
“D”, “2” and “1” posi-
tions.ON vehicle1. Engine idling speedEC-262. A/T fluid levelTM-171
3. Torque converter clutch solenoid valveTM-73
4. Control valve assemblyTM-191
OFF vehicle 5. Torque converterTM-222
Vehicle braked by
gear change from D
1
to D
2.ON vehicle 1. A/T fluid levelTM-171OFF vehicle2. Reverse clutchTM-2583. Low & reverse brakeTM-273
4. High clutchTM-262
5. Low one-way clutchTM-222
Vehicle braked by
gear change from D
2
to D
3.ON vehicle 1. A/T fluid levelTM-171OFF vehicle 2. Brake bandTM-287
Items Symptom Condition Diagnostic item Reference page

TM-138
< SYMPTOM DIAGNOSIS >[TYPE 1 (4AT: RE4F03B)]
SYSTEM SYMPTOM
OD OFF Indicator Lamp Does Not Come On
INFOID:0000000001696242
SYMPTOM:
OD OFF indicator lamp does not come on for about 2 seconds when turning ignition switch to ON.
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TM-35, "
CONSULT-III Function (TRANSMISSION)" or TM-350, "Diagnosis
Procedure without CONSULT-III".
Is a malfunction in CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to TM-43, "Description" (type 1) or TM-391, "Description"
(type 2).
NO >> GO TO 2.
2.CHECK TCM POWER SOURCE
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground.
OthersTransaxle overheats.ON vehicle1. A/T fluid levelTM-171
2. Engine idling speedEC-26
3. Accelerator pedal position sensorEC-297
4. Line pressure testTM-178
5. Line pressure solenoid valveTM-81
6. Control valve assemblyTM-191
OFF vehicle7. Oil pumpTM-240
8. Reverse clutchTM-258
9. High clutchTM-262
10. Brake bandTM-287
11. Forward clutchTM-267
12. Overrun clutchTM-267
13. Low & reverse brakeTM-273
14. Torque converterTM-222
ATF shoots out during
operation.
White smoke emitted
from exhaust pipe
during operation.ON vehicle 1. A/T fluid levelTM-171
OFF vehicle2. Reverse clutchTM-258
3. High clutchTM-262
4. Brake bandTM-287
5. Forward clutchTM-267
6. Overrun clutchTM-267
7. Low & reverse brakeTM-273
Unusual smell at A/T
fluid charging pipe.ON vehicle 1. A/T fluid levelTM-171
OFF vehicle2. Torque converterTM-222
3. Oil pumpTM-240
4. Reverse clutchTM-258
5. High clutchTM-262
6. Brake bandTM-287
7. Forward clutchTM-267
8. Overrun clutchTM-267
9. Low & reverse brakeTM-273
Items Symptom Condition Diagnostic item Reference page