2006 NISSAN VERSA engine oil

AT-128
DTC P0734 A/T 4TH GEAR FUNCTION
Revision: June 20062007 Versa
DTC P0734 A/T 4TH GEAR FUNCTIONPFP:31940
DescriptionUCS005ON

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-II Reference ValueUCS005OO
Remarks: Specification data are reference values.
On Board Diagnosis LogicUCS005OP

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0734 A/T 4TH GR FNCTN” with CONSULT-II 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
malfunction.
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 CauseUCS005OQ

Shift solenoid valve A

Shift solenoid valve B

Line pressure solenoid valve

Each clutch

Hydraulic control circuit
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%

DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
AT-139
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)PFP:31940
DescriptionUCS005P1

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-II Reference ValueUCS005P2
Remarks: Specification data are reference values.
On Board Diagnosis LogicUCS005P3

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0744 A/T TCC S/V FNCTN” with CONSULT-II 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
malfunction.
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 posi-
tion above
*: “P0744 A/T TCC S/V FNCTN” is detected.
Possible CauseUCS005P4

Line pressure solenoid valve

Torque converter clutch solenoid valve

Each clutch

Hydraulic control circuit
Item name Condition Display value (Approx)
TCC S/V DUTY Lock-up OFF ⇔ Lock-up ON 4% ⇔ 94%

DTC P0745 LINE PRESSURE SOLENOID VALVE
AT-145
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
DTC P0745 LINE PRESSURE SOLENOID VALVEPFP:31940
DescriptionUCS005P7
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-II Reference ValueUCS005P8
Remarks: Specification data are reference values.
On Board Diagnosis LogicUCS005P9

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0745 LINE PRESSURE S/V” with CONSULT-II or 11th judgement flicker with-
out CONSULT-II is detected when TCM detects an improper voltage drop while it tries to operate the sole-
noid valve.
Possible CauseUCS005PA

Harness or connector
(The solenoid circuit is open or shorted.)

Line pressure solenoid valve
DTC Confirmation ProcedureUCS005PB
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-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Touch “START”.
3. Depress accelerator pedal completely and wait at least 1 sec-
ond.
4. If the check result is NG, go to AT-147, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
WITHOUT CONSULT-II
1. Start engine.
2. With brake pedal depressed, shift the lever from “P” → “N” → “D” → “N” → “P” positions.
3. Perform self-diagnosis. Refer to AT- 9 0 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT-147, "
Diagnostic Procedure" .
Item name Condition Display value (Approx.)
LINE PRES DTYSmall throttle opening (Low line pressure) ⇔ Large
throttle opening (High line pressure)0% ⇔ 94%
BCIA0031E

TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-217
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
Engine Speed Does Not Return to Idle (Light Braking D4 → D3 )UCS005VA
SYMPTOM:
Engine speed does not smoothly return to idle when A/T shifts from D4 to D3 on “Cruise Test — Part
1”.
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT-82, "
SELF-DIAGNOSTIC RESULT MODE" or AT-90, "Diagnostic Proce-
dure Without CONSULT-II" .
Is any malfunction detected by self-diagnostic results?
YES >> Check the malfunctioning system. Refer to AT- 8 2 , "SELF-DIAGNOSTIC RESULT MODE" or AT-
91, "Judgement of Self-diagnosis Code" .
NO >> GO TO 2.
2. CHECK ACCELERATOR PEDAL POSITION SENSOR
Check accelerator pedal position sensor. Refer to EC-532, "
DTC P2138 APP SENSOR" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace accelerator pedal position sensor.
3. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT-257, "
Components" .
2. Check A/T fluid condition. Refer to AT-53, "
Fluid Condition Check" .
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT-242, "
Control Valve Assembly and Accumulators" .
2. Check the following items:
–Overrun clutch control valve
–Overrun clutch reducing valve
–Overrun clutch solenoid valve
3. Disassemble A/T. Refer to AT- 2 6 8 , "
Disassembly" .
4. Check the following items:
–Overrun clutch assembly. Refer to AT-320, "Forward and Overrun Clutches" .
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
5. DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT-242, "
Control Valve Assembly and Accumulators" .
2. Check the following items:
–Overrun clutch control valve
–Overrun clutch reducing valve
–Overrun clutch solenoid valve
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.

AT-222
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: June 20062007 Versa
2. CHECK PNP SWITCH CIRCUIT
Without CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground
while moving selector lever through each position. Refer to AT-
98, "Wiring Diagram — AT — PNP/SW" .
B: Battery voltage
0: 0V
OK or NG
OK >> GO TO 3
NG >> Check PNP switch. Refer to AT - 1 9 1 , "
PNP SWITCH" .
3. CHECK A/T POSITION
Check A/T position. Refer to AT-234, "
Checking of A/T Position" .
OK or NG
OK >> GO TO 4.
NG >> Adjust A/T position. Refer to AT- 2 3 3 , "
Adjustment of A/T Position" .
4. CHECK VEHICLE SPEED SENSOR·A/T AND VEHICLE SPEED SENSOR·MTR CIRCUIT
Check vehicle speed sensor·A/T (revolution sensor) and vehicle speed sensor·MTR circuit. Refer to AT-107,
"DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)" and/or AT-166, "DTC VEHICLE
SPEED SENSOR MTR" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace vehicle speed sensor·A/T (revolution sensor) and/or vehicle speed sensor·MTR
circuits.
5. CHECK A/T FLUID CONDITION
1. Remove oil pan. Refer to AT-257, "
Components" .
2. Check A/T fluid condition. Refer to AT- 5 3 , "
Fluid Condition Check" .
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
Selector lever positionTerminal
36 35 34 27 26
“P”, “N” B 0 0 0 0
“R” 0B000
“D” 0 0 B 0 0
“2” 0 0 0 B 0
“1” 0 0 0 0 B
SCIA7162E

AT-242
ON-VEHICLE SERVICE
Revision: June 20062007 Versa
ON-VEHICLE SERVICEPFP:00000
Control Valve Assembly and AccumulatorsUCS005VR
COMPONENTS
REMOVAL AND INSTALLATION
Removal
1. Disconnect the battery negative terminal.
2. Remove engine under cover and fender protector (LH). Refer to EI-22, "
Removal and Installation" .
3. Drain the A/T fluid. Refer to AT-16, "
A/T FLUID" .
4. Remove oil pan and oil pan gasket.
5. Check for foreign materials in oil pan to help determine cause of
malfunction. If the ATF is very dark, smell burned or contains for-
eign particles, friction material (clutches, band) may need
replacement. A tacky film that will not wipe clean indicates var-
nish build up. Varnish can cause valves, servo, and clutches to
stick and can inhibit pump pressure.

If ATF contains frictional material (clutch, bands, etc.),
replace radiator and flush cooler line using cleaning sol-
vent and compressed air after repair of A/T. Refer to CO-
11, "RADIATOR" .
6. Remove magnets from oil pan.
1. A/T 2. O-ring 3. Return spring
4. Control valve assembly 5. Oil pan gasket 6. Oil pan
7. Drain plug gasket 8. Drain plug 9. Magnet
10. Oil pan fitting bolt 11. Snap ring 12. O-ring
13. Servo release accumulator piston 14. N-D accumulator piston 15. O-ring
16. Return spring 17. Lip seal
SCIA8024E
SCIA8025E

TRANSAXLE ASSEMBLY
AT-255
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
CAUTION:

When replacing an engine or transmission you must make sure any dowels are installed correctly
during re-assembly.

Improper alignment caused by missing dowels may cause vibration, oil leaks or breakage of drive
train components.

Do not reuse O-rings and copper washers. Refer to AT- 2 5 3 , "COMPONENTS" .

When turning crankshaft, turn it clockwise as viewed from the front of the engine.

When tightening the bolts for the torque converter while securing the crankshaft pulley bolt, be
sure to confirm the tightening torque of the crankshaft pulley bolt. Refer to EM-37, "
TIMING
CHAIN" .

After converter is installed to drive plate, rotate crankshaft several turns to check that transaxle
rotates freely without binding.

When installing the torque converter to the transaxle measure
distance A.

Check the fitting of the dowel pins when installing the transaxle
assembly and the engine assembly.
: Dowel pin (2)

When installing the transaxle to the engine, align the matching mark on the drive plate with the matching
mark on the torque converter.

When securing the transaxle to the engine, attach the bolts in
accordance with the following standard.
(A): A/T to engine
(B): Engine to A/TDimension A: 14.4 mm (0.567 in) or more
SAT4 3 0D
SCIA7698E
Bolt No. 1 2
Number of bolts 2 7
Bolt length “L”
[mm (in)]55 (2.17) 50 (1.97)
Tightening torque
[N·m (kg-m, ft-lb)]62 (6.3, 46)
SCIA7685E

AV-24
AUDIO
Revision: June 20062007 Versa
NOTE:
The source of the noise can be found easily by listening to the noise while removing the fuses of electrical
components, one by one.
TYPE OF NOISE AND POSSIBLE CAUSE
Power Supply Circuit InspectionEKS00I9U
1. CHECK FUSE
Check that the following fuses of the subwoofer (premium system) and audio unit are not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. AUDIO UNIT POWER SUPPLY CIRCUIT CHECK
1. Disconnect audio unit connector.
2. Check voltage between the audio unit and ground.
OK or NG
OK >> With premium system, GO TO 3.
NG >>

Check connector housings for disconnected or loose
terminals.

Repair harness or connector.
Occurrence condition Possible cause
Occurs only when engine is ON.A continuous growling noise occurs. The speed of
the noise varies with changes in the engine speed.Ignition components
A whistling noise occurs while the engine speed is
high. A booming noise occurs while the engine is
running and the lighting switch is ON.Generator
Noise only occurs when various
electrical components are oper-
ating.A cracking or snapping sound occurs with the
operation of various switches.Relay malfunction, radio malfunction
The noise occurs when various motors are operat-
ing.

Motor case ground

Motor
The noise occurs constantly, not just under certain conditions.

Rear defogger coil malfunction

Open circuit in printed heater
A cracking or snapping sound occurs while the vehicle is being driven, especially
when it is vibrating excessively.

Ground wire of body parts.

Ground due to improper part installation

Wiring connections or a short circuit
Unit Terminals Signal name Fuse No.
Audio unit19 Battery power 27
7 Ignition switch ACC or ON 20
Subwoofer (with premium audio) 1 Ignition switch ACC or ON 27
UnitTe r m i n a l N o .
OFF ACC ON (+)
(-)
Connector Terminal
Audio unit M4319 GroundBattery
voltageBattery
voltageBattery
voltage
7 Ground 0VBattery
voltageBattery
voltage
WKIA5345E