torque NISSAN 350Z 2007 Z33 Automatic Transmission User Guide

AT-36
A/T CONTROL SYSTEM
Revision: 2006 November2007 350Z
FUNCTION OF ATF PRESSURE SWITCH
Accumulator control valveAdjusts the pressure (accumulator control pressure) acting on the accumulator piston
and low coast reducing valve to the pressure appropriate to the driving state.
Pilot valve AAdjusts the line pressure and produces the constant pressure (pilot pressure) required
for line pressure control, shift change control, and lock-up control.
Pilot valve BAdjusts the line pressure and produces the constant pressure (pilot pressure) required
for shift change control.
Low coast brake switching valve During engine braking, supplies the line pressure to the low coast brake reducing valve.
Low coast brake reducing valveWhen the low coast brake is coupled, adjusts the line pressure to the optimum pressure
(low coast brake pressure) and supplies it to the low coast brake.
N-R accumulator Produces the stabilizing pressure for when N-R is selected.
Direct clutch piston switching valve Operates in 4th gear and switches the direct clutch coupling capacity.
High and low reverse clutch control valveWhen the high and low reverse clutch is coupled, adjusts the line pressure to the opti-
mum pressure (high and low reverse clutch pressure) and supplies it to the high and low
reverse clutch. (In 1st, 3rd, 4th and 5th gears, adjusts the clutch pressure.)
Input clutch control valveWhen the input clutch is coupled, adjusts the line pressure to the optimum pressure
(input clutch pressure) and supplies it to the input clutch. (In 4th and 5th gears, adjusts
the clutch pressure.)
Direct clutch control valveWhen the direct clutch is coupled, adjusts the line pressure to the optimum pressure
(direct clutch pressure) and supplies it to the direct clutch. (In 2nd, 3rd, and 4th gears,
adjusts the clutch pressure.)
TCC control valve
TCC control plug
TCC control sleeveSwitches the lock-up to operating or released. Also, by performing the lock-up operation
transiently, lock-up smoothly.
Torque converter lubrication valveOperates during lock-up to switch the torque converter, cooling, and lubrication system
oil passage.
Cool bypass valve Allows excess oil to bypass cooler circuit without being fed into it.
Line pressure relief valve Discharges excess oil from line pressure circuit.
N-D accumulator Produces the stabilizing pressure for when N-D is selected.
Manual valveSends line pressure to each circuit according to the select position. The circuits to which
the line pressure is not sent drain. Name Function
Name Function
ATF pressure switch 2 (LC/B)Detects any malfunction in the low coast brake hydraulic pressure. When it detects any
malfunction, it puts the system into fail-safe mode.

TROUBLE DIAGNOSIS
AT-41
D
E
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G
H
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MA
B
AT
Revision: 2006 November2007 350Z
A/T Interlock

If there is an A/T interlock judgment malfunction, the transmission is fixed in 2nd gear to make driving pos-
sible.
NOTE:
When the vehicle is driven fixed in 2nd gear a turbine revolution sensor malfunction is displayed,
but this is not a turbine revolution sensor malfunction.

When interlock is detected at the 3rd gear or more, it is locked at the 2nd gear.
A/T 1st Engine Braking
When there is an A/T first gear engine brake judgment malfunction, the low coast brake solenoid is switched
OFF to avoid the engine brake operation.
Line Pressure Solenoid
The solenoid is switched OFF and the line pressure is set to the maximum hydraulic pressure to make driving
possible.
Torque Converter Clutch Solenoid
The solenoid is switched OFF to release the lock-up.
Low Coast Brake Solenoid
When a malfunction (electrical or functional) occurs, in order to make driving possible, if the solenoid is ON,
the A/T is held in 2nd gear; if the solenoid is OFF, the A/T is held in 4th gear. (Engine brake is not applied in
1st and 2nd gear.)
Input Clutch Solenoid
If a malfunction (electrical or functional) occurs with the solenoid either ON or OFF, the A/T is held in 4th gear
to make driving possible.
Direct Clutch Solenoid
If a malfunction (electrical or functional) occurs with the solenoid either ON or OFF, the A/T is held in 4th gear
to make driving possible.
Front Brake Solenoid
If a malfunction (electrical or functional) occurs with the solenoid ON, in order to make driving possible, the A/
T is held in 5th gear; if the solenoid is OFF, 4th gear.
High and Low Reverse Clutch Solenoid
If a malfunction (electrical or functional) occurs with the solenoid either ON or OFF, the A/T is held in 4th gear
to make driving possible.
Turbine Revolution Sensor 1 or 2
The control is the same as if there were no turbine revolution sensors, 5th gear and manual mode are prohib-
ited.

AT-44
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
DIAGNOSTIC WORKSHEET
Information from Customer
KEY POINTS

WHAT..... Vehicle & A/T model

WHEN..... Date, Frequencies

WHERE..... Road conditions

HOW..... Operating conditions, Symptoms
Diagnostic Worksheet Chart
Customer name MR/MS Model & Year VIN
Trans. Model Engine Mileage
Incident Date Manuf. Date In Service Date
Frequency❏ Continuous❏ Intermittent ( times a day)
Symptoms❏ Vehicle does not move. (❏ Any position❏ Particular position)
❏ No up-shift (❏ 1st → 2nd❏ 2nd → 3rd❏ 3rd → 4th ❏ 4th → 5th)
❏ No down-shift (❏ 5th → 4th ❏ 4th → 3rd❏ 3rd → 2nd❏ 2nd → 1st)
❏ Lock-up malfunction
❏ Shift point too high or too low.
❏ Shift shock or slip (❏ N → D❏ Lock-up❏ Any drive position)
❏ Noise or vibration
❏ No kick down
❏ No pattern select
❏ Others
()
A/T CHECK indicator lamp❏ Continuously lit❏ Not lit
Malfunction indicator lamp (MIL)❏ Continuously lit❏ Not lit
1❏ Read the item on cautions concerning fail-safe and understand the customer's complaint.AT- 4 0
2❏ A/T fluid inspectionAT- 4 9❏ Leak (Repair leak location.)
❏ State
❏ Amount
3❏ Stall test and line pressure testAT- 4 9
,
AT- 5 0
❏ Stall test
❏ Torque converter one-way clutch
❏ Front brake
❏ High and low reverse clutch
❏ Low coast brake
❏ Forward brake
❏ Reverse brake
❏ Forward one-way clutch❏ 1st one-way clutch
❏ 3rd one-way clutch
❏ Engine
❏ Line pressure low
❏ Except for input clutch and direct
clutch, clutches and brakes OK
❏ Line pressure inspection - Suspected part:

TROUBLE DIAGNOSIS
AT-45
D
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MA
B
AT
Revision: 2006 November2007 350Z
4❏ Perform all road tests and enter checks in required inspection items.AT- 5 2
4-1.Check before engine is started AT- 5 3
❏ AT- 1 7 2 , "A/T Check Indicator Lamp Does Not Come On"
❏ Perform self-diagnostics. Enter checks for detected items. AT- 8 6 , AT- 9 2
❏ AT-94, "DTC U1000 CAN COMMUNICATION LINE"
❏ AT-97, "DTC P0615 START SIGNAL CIRCUIT"
❏ AT-101, "DTC P0700 TCM"
❏ AT-102, "DTC P0705 PARK/NEUTRAL POSITION SWITCH"
❏ AT-106, "DTC P0717 TURBINE REVOLUTION SENSOR"
❏ AT-108, "DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)"
❏ AT-113, "DTC P0725 ENGINE SPEED SIGNAL"
❏ AT-115, "DTC P0731 A/T 1ST GEAR FUNCTION"
❏ AT-117, "DTC P0732 A/T 2ND GEAR FUNCTION"
❏ AT-119, "DTC P0733 A/T 3RD GEAR FUNCTION"
❏ AT-121, "DTC P0734 A/T 4TH GEAR FUNCTION"
❏ AT-123, "DTC P0735 A/T 5TH GEAR FUNCTION"
❏ AT-125, "DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE"
❏ AT-127, "DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)"
❏ AT-129, "DTC P0745 LINE PRESSURE SOLENOID VALVE"
❏ AT-131, "DTC P1705 THROTTLE POSITION SENSOR"
❏ AT-134, "DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT"
❏ AT-139, "DTC P1721 VEHICLE SPEED SENSOR MTR"
❏ AT-141, "DTC P1730 A/T INTERLOCK"
❏ AT-143, "DTC P1731 A/T 1ST ENGINE BRAKING"
❏ AT-145, "DTC P1752 INPUT CLUTCH SOLENOID VALVE"
❏ AT-147, "DTC P1757 FRONT BRAKE SOLENOID VALVE"
❏ AT-149, "DTC P1762 DIRECT CLUTCH SOLENOID VALVE"
❏ AT-151, "DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE"
❏ AT-153, "DTC P1772 LOW COAST BRAKE SOLENOID VALVE"
❏ AT-155, "DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION"
❏ AT-157, "DTC P1815 MANUAL MODE SWITCH"
4-2.Check at IdleAT- 5 3
❏ AT- 1 7 3 , "Engine Cannot Be Started in “P” or “N” Position"
❏ AT- 1 7 3 , "In “P” Position, Vehicle Moves When Pushed"
❏ AT- 1 7 4 , "In “N” Position, Vehicle Moves"
❏ AT- 1 7 5 , "Large Shock (“N” to “D” Position)"
❏ AT- 1 7 7 , "Vehicle Does Not Creep Backward in “R” Position"
❏ AT- 1 7 9 , "Vehicle Does Not Creep Forward in “D” Position"
4-3.Cruise testAT- 5 5
Part 1
❏ AT- 1 8 1 , "
Vehicle Cannot Be Started from D1"
❏ AT- 1 8 3 , "A/T Does Not Shift: D1 → D2"
❏ AT- 1 8 5 , "A/T Does Not Shift: D2 → D3"
❏ AT- 1 8 7 , "A/T Does Not Shift: D3 → D4"
❏ AT- 1 8 9 , "A/T Does Not Shift: D4 → D5"
❏ AT- 1 9 1 , "A/T Does Not Lock-up"
❏ AT- 1 9 3 , "A/T Does Not Hold Lock-up Condition"
❏ AT- 1 9 4 , "Lock-up Is Not Released"
❏ AT- 1 9 5 , "Engine Speed Does Not Return to Idle"

AT-46
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
44-3.Part 2AT- 5 7
❏ AT-181, "Vehicle Cannot Be Started from D1"
❏ AT-183, "A/T Does Not Shift: D1 → D2"
❏ AT-185, "A/T Does Not Shift: D2 → D3"
❏ AT-187, "A/T Does Not Shift: D3 → D4"
Part 3AT- 5 8
❏ AT-196, "Cannot Be Changed to Manual Mode"
❏ AT-196, "A/T Does Not Shift: 5th Gear → 4th Gear"
❏ AT-198, "A/T Does Not Shift: 4th Gear → 3rd Gear"
❏ AT-199, "A/T Does Not Shift: 3rd Gear → 2nd Gear"
❏ AT-201, "A/T Does Not Shift: 2nd Gear → 1st Gear"
❏ AT-202, "Vehicle Does Not Decelerate by Engine Brake"
❏ Perform self-diagnostics. Enter checks for detected items. AT- 8 6 , AT- 9 2
❏ AT- 9 4 , "DTC U1000 CAN COMMUNICATION LINE"
❏ AT- 9 7 , "DTC P0615 START SIGNAL CIRCUIT"
❏ AT-101, "DTC P0700 TCM"
❏ AT-102, "DTC P0705 PARK/NEUTRAL POSITION SWITCH"
❏ AT-106, "DTC P0717 TURBINE REVOLUTION SENSOR"
❏ AT-108, "DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)"
❏ AT- 11 3 , "DTC P0725 ENGINE SPEED SIGNAL"
❏ AT- 11 5 , "DTC P0731 A/T 1ST GEAR FUNCTION"
❏ AT- 11 7 , "DTC P0732 A/T 2ND GEAR FUNCTION"
❏ AT- 11 9 , "DTC P0733 A/T 3RD GEAR FUNCTION"
❏ AT-121, "DTC P0734 A/T 4TH GEAR FUNCTION"
❏ AT-123, "DTC P0735 A/T 5TH GEAR FUNCTION"
❏ AT-125, "DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE"
❏ AT-127, "DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)"
❏ AT-129, "DTC P0745 LINE PRESSURE SOLENOID VALVE"
❏ AT-131, "DTC P1705 THROTTLE POSITION SENSOR"
❏ AT-134, "DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT"
❏ AT-139, "DTC P1721 VEHICLE SPEED SENSOR MTR"
❏ AT-141, "DTC P1730 A/T INTERLOCK"
❏ AT-143, "DTC P1731 A/T 1ST ENGINE BRAKING"
❏ AT-145, "DTC P1752 INPUT CLUTCH SOLENOID VALVE"
❏ AT-147, "DTC P1757 FRONT BRAKE SOLENOID VALVE"
❏ AT-149, "DTC P1762 DIRECT CLUTCH SOLENOID VALVE"
❏ AT-151, "DTC P1767 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE"
❏ AT-153, "DTC P1772 LOW COAST BRAKE SOLENOID VALVE"
❏ AT-155, "DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION"
❏ AT-157, "DTC P1815 MANUAL MODE SWITCH"
5❏ Inspect each system for items found to be NG in the self-diagnostics and repair or replace the malfunctioning parts.
6❏ Perform all road tests and enter the checks again for the required items.AT- 5 2
7❏ For any remaining NG items, perform the “diagnostics procedure” and repair or replace the malfunctioning
parts. See the chart for diagnostics by symptoms. (This chart also contains other symptoms and inspection pro-
cedures.)AT- 5 9
8❏ Erase the results of the self-diagnostics from TCM and ECM.AT- 9 3,
AT- 3 8

AT-50
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
8. Cool down the ATF.
CAUTION:
Run the engine at idle for at least one minute.
9. Repeat steps 5 through 8 with selector lever in “R” position.
Judgment Stall Test
O: Stall speed within standard value position
H: Stall speed higher than standard value
L: Stall speed lower than standard value
Stall Test Standard Value Position
LINE PRESSURE TEST
Line Pressure Test Port
Line Pressure Test Procedure
1. Inspect the amount of engine oil and replenish if necessary.
2. Drive the car for about 10 minutes to warm it up so that the ATF reaches in range of 50 to 80°C (122 to
176°F), then inspect the amount of ATF and replenish if necessary.
NOTE:
The A/T fluid temperature rises in range of 50 to 80°C (122 to 176°F) during 10 minutes of driving.
Selector lever position
Expected problem location
“D” and “M” “R”
Stall speedHO

Forward brake

Forward one-way clutch

1st one-way clutch

3rd one-way clutch
OH

Reverse brake
LL

Engine and torque converter one-way clutch
HH

Line pressure low
Does not shift-up “D” or “M” position 1 → 2 Slipping in 2nd, 3rd or 4th gear Direct clutch slippage
Does not shift-up “D” or “M” position 2 → 3 Slipping in 3rd, 4th or 5th gear High and low reverse clutch slippage
Does not shift-up “D” or “M” position 3 → 4 Slipping in 4th or 5th gear Input clutch slippage
Does not shift-up “D” or “M” position 4 → 5 Slipping in 5th gear Front brake slippage
SCIA2187E

TROUBLE DIAGNOSIS
AT-51
D
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F
G
H
I
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MA
B
AT
Revision: 2006 November2007 350Z
3. After warming up remove the oil pressure detection plug and
install the oil pressure gauge [ST2505S001(J-34301-C)].
CAUTION:
When using the oil pressure gauge, be sure to use O- ring
attached to the oil pressure detection plug.
4. Securely engage the parking brake so that the tires do not turn.
5. Start the engine, then measure the line pressure at both idle and
the stall speed.
CAUTION:

Keep brake pedal pressed all the way down during mea-
surement.

When measuring the line pressure at the stall speed,
refer to AT- 4 9 , "
STALL TEST" .
6. After the measurements are complete, install the oil pressure
detection plug and tighten to the specified torque. Refer to AT-
246, "Components" .
CAUTION:

Do not reuse O-ring.

Apply ATF to O-ring.
Line Pressure
SCIA5309E
SAT513G
SAT493G
Engine speedLine pressure kPa (kg/cm2 , psi)
“R” position “D” and “M” positions
At idle speed 425 – 465 (4.3 – 4.7, 62 – 67) 379 – 428 (3.9 – 4.4, 55 – 62)
At stall speed 1,605 – 1,950 (16.4 – 19.9, 233 – 283) 1,310 – 1,500 (13.4 – 15.3, 190 – 218)

TROUBLE DIAGNOSIS
AT-61
D
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F
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B
AT
Revision: 2006 November2007 350Z
7
Shift
ShockShock is too large for
upshift when acceler-
ator pedal is released.ON vehicle1. Accelerator pedal position sensorAT-131
2. A/T positionAT-206
3. Engine speed signalAT- 11 3
4. CAN communication lineAT- 9 4
5. Turbine revolution sensorAT-106
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT-108,
AT-139
7. A/T fluid level and stateAT- 4 9
8. Control valve with TCMAT-215
OFF vehicle9. Front brake (brake band)AT-25510. Input clutchAT-276
11. High and low reverse clutchAT-286
12. Direct clutchAT-288
8Shock is too large for
lock-up.ON vehicle1. Accelerator pedal position sensorAT-131
2. A/T positionAT-206
3. Engine speed signalAT- 11 3
4. CAN communication lineAT- 9 4
5. Turbine revolution sensorAT-106
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT-108,
AT-139
7. Torque converter clutch solenoid valveAT-125
8. A/T fluid level and stateAT- 4 9
9. Control valve with TCMAT-215
OFF vehicle 10. Torque converterAT-255
9Shock is too large
during engine brake.ON vehicle1. Accelerator pedal position sensorAT-131
2. A/T positionAT-206
3. CAN communication lineAT- 9 4
4. A/T fluid level and stateAT- 4 9
5. Control valve with TCMAT-215
OFF vehicle6. Front brake (brake band)AT-2557. Input clutchAT-276
8. High and low reverse clutchAT-286
9. Direct clutchAT-288
No. Items Symptom Condition Diagnostic ItemReference
page

AT-66
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
23
Slips/Will
Not
EngageVehicle cannot be
started from D
1 .
Refer to AT-181,
"Vehicle Cannot Be
Started from D1" .ON vehicle1. A/T fluid level and stateAT- 4 9
2. Accelerator pedal position sensorAT- 1 3 1
3. Line pressure testAT- 5 0
4. CAN communication lineAT- 9 4
5. Control valve with TCMAT- 2 1 5
OFF vehicle6. Torque converterAT- 2 5 5
7. Oil pump assemblyAT- 2 7 1
8. 3rd one-way clutchAT- 2 7 4
9. 1st one-way clutchAT- 2 8 1
10. Gear systemAT- 2 4 6
11. Reverse brakeAT- 2 5 5
12. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT-17, "
Cross-sectional View" .)AT- 2 5 5
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-sectional View" .)AT- 2 5 5
24Does not lock-up.
Refer to AT-191, "A/T
Does Not Lock-up" .ON vehicle1. A/T fluid level and stateAT- 4 9
2. Line pressure testAT- 5 0
3. Engine speed signalAT- 11 3
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 5
6. CAN communication lineAT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converterAT- 2 5 59. Oil pump assemblyAT- 2 7 1
25Does not hold lock-up
condition.
Refer to AT-193, "A/T
Does Not Hold Lock-
up Condition" .ON vehicle1. A/T fluid level and stateAT- 4 9
2. Line pressure testAT- 5 0
3. Engine speed signalAT- 11 3
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 5
6. CAN communication lineAT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converterAT- 2 5 59. Oil pump assemblyAT- 2 7 1
No. Items Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
AT-67
D
E
F
G
H
I
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MA
B
AT
Revision: 2006 November2007 350Z26
Slips/Will
Not
EngageLock-up is not
released.
Refer to AT-194,
"Lock-up Is Not
Released" .ON vehicle1. A/T fluid level and stateAT- 4 9
2. Line pressure testAT- 5 0
3. Engine speed signalAT- 11 3
4. Turbine revolution sensorAT-106
5. Torque converter clutch solenoid valveAT-125
6. CAN communication lineAT- 9 4
7. Control valve with TCMAT-215
OFF vehicle8. Torque converterAT-2559. Oil pump assemblyAT-271
27No shock at all or the
clutch slips when
vehicle changes
speed D
1 → D2 or
M
1 → M2 . ON vehicle1. A/T fluid level and stateAT- 4 9
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT-108,
AT-139
3. Direct clutch solenoid valveAT-149
4. CAN communication lineAT- 9 4
5. Line pressure testAT- 5 0
6. Control valve with TCMAT-215
OFF vehicle7. Torque converterAT-255
8. Oil pump assemblyAT-271
9. 3rd one-way clutchAT-274
10. Gear systemAT-246
11. Direct clutchAT-288
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-sectional View" .)AT-255
No. Items Symptom Condition Diagnostic ItemReference
page