2003 NISSAN ALMERA N16 oil pressure

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-67
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Line Pressure TestECS007NY
LINE PRESSURE TEST PORTS
Location of line pressure test ports are shown in the illustration.
●Always replace pressure plugs as they are self-sealing
bolts.
LINE PRESSURE TEST PROCEDURE
1. Check A/T fluid and engine oil levels. If necessary, add fluid or
oil.
2. Drive vehicle for approx. 10 minutes or until engine oil and AT F
reach operating temperature.
3. Install pressure gauge to corresponding line pressure port.
4. Set parking brake and block wheels.
●Continue to depress brake pedal fully while line pressure test is being performed at stall speed.
5. Start engine and measure line pressure at idle and stall speed.
●When measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure: Refer to AT- 5 1 5 , "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)" .
SAT561J
ATF operating temperature: 50 - 80°C (122 -176°F)
SAT647B
UAT008
SAT493G

AT-68
[EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
JUDGEMENT OF LINE PRESSURE TEST
Road TestECS007NZ
DESCRIPTION
●The purpose of the test is to determine overall performance of A/
T and analyze causes of problems.
●The road test consists of the following three parts:
1. Check before engine is started
2. Check at idle
3. Cruise test
●Before road test, familiarize yourself with all test procedures and
items to check.
●Conduct tests on all items until specified symptom is found.
Troubleshoot items which check out No Good after road test.
Refer to the following items.
Judgement Suspected parts
At idleLine pressure is low in all positions.
●Oil pump wear
●Control piston damage
●Pressure regulator valve or plug sticking
●Spring for pressure regulator valve damaged
●Line pressure leakage between oil strainer and pressure regulator valve
●Clogged strainer
Line pressure is low in particular posi-
tion.
●Line pressure leakage between manual valve and particular clutch
●For example, line pressure is:
− Low in “R” and “1” positions, but
− Normal in “D” and “2” positions.
Therefore, fluid leakage exists at or around low and reverse brake circuit.
Refer to AT- 1 8 , "
Shift Mechanism" .
Line pressure is high.
●Maladjustment of throttle position sensor
●A/T fluid temperature sensor damaged
●Line pressure solenoid valve sticking
●Short circuit of line pressure solenoid valve circuit
●Pressure modifier valve sticking
●Pressure regulator valve or plug sticking
●Open in dropping resistor circuit
At stall
speedLine pressure is low.
●Maladjustment of throttle position sensor
●Line pressure solenoid valve sticking
●Short circuit of line pressure solenoid valve circuit
●Pressure regulator valve or plug sticking
●Pressure modifier valve sticking
●Pilot valve sticking
SAT786A
SAT496G

AT-86
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
PFP:00000
Symptom ChartECS007O0
Numbers are arranged in order of inspection.
Perform inspections starting with number one and work up.
Symptom Condition Diagnostic ItemReference Page
EURO-OBD
Engine cannot start in “P” and “N”
positions.
AT- 2 1 2 , "
2. Engine Cannot Be
Sta r te d I n “P” and “N” Position"
ON vehicle1. Ignition switch and starter EL-11, SC-13
2. Control cable adjustmentAT-408, "
Control Cable
Adjustment"
3. PNP switch adjustmentAT-408, "
Park/Neutral Posi-
tion (PNP) Switch Adjust-
ment"
Engine starts in position other than
“N” and “P” positions.
AT- 2 1 2 , "
2. Engine Cannot Be
Sta r te d I n “P” and “N” Position"
ON vehicle1. Control cable adjustmentAT-408, "
Control Cable
Adjustment"
2. PNP switch adjustmentAT-408, "
Park/Neutral Posi-
tion (PNP) Switch Adjust-
ment"
Transaxle noise in “P” and “N” posi-
tions.ON vehicle1. Fluid levelAT- 6 3 , "
FLUID LEVEL
CHECK"
2. Line pressure testAT- 6 7 , "Line Pressure Test"
3. Throttle position sensor [Accelerator
pedal position (APP) sensor]AT-181, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT-123, "
DTC P0720 VEHI-
CLE SPEED SENSOR A/T
(REVOLUTION SEN-
SOR)",
AT-201, "
DTC VEHICLE
SPEED SENSOR MTR"
5. Engine speed signalAT-129, "DTC P0725
ENGINE SPEED SIGNAL"
OFF vehicle6. Oil pumpAT-435, "
Oil Pump"
7. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Vehicle moves when changing into
“P” position, or parking gear does
not disengage when shifted out of
“P” position.
AT- 2 1 3 , "
3. In “P” Position, Vehicle
Moves Forward Or Backward When
Pushed"
ON vehicle 1. Control cable adjustmentAT-408, "Control Cable
Adjustment"
OFF vehicle 2. Parking componentsAT-413, "
Output Shaft, Idler
Gear, Reduction Pinion
Gear and Bearing
Retainer",AT-432,
"REPAIR FOR COMPO-
NENT PARTS"
Vehicle runs in “N” position.
AT- 2 1 4 , "
4. In “N” Position, Vehicle
Moves"
ON vehicle 1. Control cable adjustmentAT-408, "Control Cable
Adjustment"
OFF vehicle2. Forward clutchAT-464, "
Forward and
Overrun Clutches"
3. Reverse clutchAT-455, "Reverse Clutch"
4. Overrun clutchAT-464, "Forward and
Overrun Clutches"

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-89
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Clutches or brakes slip somewhat in
starting.ON vehicle1. Fluid levelAT-63, "
FLUID LEVEL
CHECK"
2. Control cable adjustmentAT-408, "Control Cable
Adjustment"
3. Throttle position sensor [Accelerator
pedal position (APP) sensor]AT-181, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
4. Line pressure testAT-67, "Line Pressure Test"
5. Line pressure solenoid valveAT-164, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
6. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
7. Accumulator N-DAT-406, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle8. Forward clutchAT-464, "
Forward and
Overrun Clutches"
9. Reverse clutchAT-455, "Reverse Clutch"
10. Low & reverse brakeAT-470, "Low & Reverse
Brake"
11. Oil pumpAT-435, "Oil Pump"
12. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Excessive creep. ON vehicle 1. Engine idling rpmEC-30, "Idle Speed and
Ignition Timing Check"
No creep at all.
AT-216, "
6. Vehicle Does Not Creep
Backward In “R” Position" and AT-
219, "7. Vehicle Does Not Creep
Forward In “D”,“2” Or “1” Position"
ON vehicle1. Fluid levelAT-63, "
FLUID LEVEL
CHECK"
2. Line pressure testAT-67, "LINE PRESSURE
TEST PROCEDURE"
3. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle4. Forward clutchAT-464, "
Forward and
Overrun Clutches"
5. Oil pumpAT-435, "Oil Pump"
6. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Symptom Condition Diagnostic ItemReference Page
EURO-OBD

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-99
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Races extremely fast or slips in
changing from “D
4 ” or “D3 ” to “D1 ”
when depressing accelerator pedal.ON vehicle1. Fluid levelAT-63, "
FLUID LEVEL
CHECK"
2. Throttle position sensor [Accelerator
pedal position (APP) sensor]AT-181, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
3. Line pressure testAT-67, "Line Pressure Test"
4. Line pressure solenoid valveAT-164, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
5. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle6. Forward clutchAT-464, "
Forward and
Overrun Clutches"
7. Forward one-way clutchAT-413, "OVERHAUL"
8. Low one-way clutchAT-413, "
OVERHAUL",AT-
417, "Locations of Adjust-
ing Shims, Needle Bear-
ings, Thrust Washers and
Snap Rings"
Vehicle will not run in any position.ON vehicle1. Fluid levelAT-63, "
FLUID LEVEL
CHECK"
2. Control cable adjustmentAT-408, "Control Cable
Adjustment"
3. Line pressure testAT-67, "Line Pressure Test"
4. Line pressure solenoid valveAT-164, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
OFF vehicle5. Oil pumpAT-435, "
Oil Pump"
6. High clutchAT-459, "High Clutch"
7. Brake bandAT-483, "Band Servo Pis-
ton Assembly"
8. Low & reverse brakeAT-470, "Low & Reverse
Brake"
9. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
10. Parking componentsAT-413, "
Output Shaft, Idler
Gear, Reduction Pinion
Gear and Bearing
Retainer"
Transmission noise in “D”, “2”, “1”
and “R” positions.ON vehicle 1. Fluid levelAT-63, "
FLUID LEVEL
CHECK"
OFF vehicle 2. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Symptom Condition Diagnostic ItemReference Page
EURO-OBD

AT-102
[EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Large shock changing from “12 ” to
“1
1 ” in “1” position.ON vehicle 1. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 2. Low & reverse brakeAT-470, "Low & Reverse
Brake"
Transmission overheats.ON vehicle1. Fluid levelAT- 6 3 , "
FLUID LEVEL
CHECK"
2. Engine idling rpmEC-30, "Idle Speed and
Ignition Timing Check"
3. Throttle position sensor [Accelerator
pedal position (APP) sensor]AT-181, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
4. Line pressure testAT- 6 7 , "Line Pressure Test"
5. Line pressure solenoid valveAT-164, "
DTC P0745 LINE
PRESSURE SOLENOID
VA LV E"
6. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle7. Oil pumpAT-435, "
Oil Pump"
8. Reverse clutchAT-455, "Reverse Clutch"
9. High clutchAT-459, "High Clutch"
10. Brake bandAT-483, "Band Servo Pis-
ton Assembly"
11. Forward clutchAT-464, "Forward and
Overrun Clutches"
12. Overrun clutchAT-464, "Forward and
Overrun Clutches"
13. Low & reverse brakeAT-470, "Low & Reverse
Brake"
14. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
ATF shoots out during operation.
White smoke emitted from exhaust
pipe during operation.ON vehicle 1. Fluid levelAT- 6 3 , "
FLUID LEVEL
CHECK"
OFF vehicle2. Reverse clutchAT-455, "
Reverse Clutch"
3. High clutchAT-459, "High Clutch"
4. Brake bandAT-483, "Band Servo Pis-
ton Assembly"
5. Forward clutchAT-464, "Forward and
Overrun Clutches"
6. Overrun clutchAT-464, "Forward and
Overrun Clutches"
7. Low & reverse brakeAT-470, "Low & Reverse
Brake"
Symptom Condition Diagnostic ItemReference Page
EURO-OBD

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-103
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
Offensive smell at fluid charging
pipe.ON vehicle 1. Fluid levelAT-63, "
FLUID LEVEL
CHECK"
OFF vehicle2. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
3. Oil pumpAT-435, "Oil Pump"
4. Reverse clutchAT-455, "Reverse Clutch"
5. High clutchAT-459, "High Clutch"
6. Brake bandAT-483, "Band Servo Pis-
ton Assembly"
7. Forward clutchAT-464, "Forward and
Overrun Clutches"
8. Overrun clutchAT-464, "Forward and
Overrun Clutches"
9. Low & reverse brakeAT-470, "Low & Reverse
Brake"
Torque converter is not locked up.ON vehicle1. Throttle position sensor [Accelerator
pedal position (APP) sensor]AT-181, "
DTC P1705
ACCELERATOR PEDAL
POSITION (APP) SEN-
SOR"
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT-123, "
DTC P0720 VEHI-
CLE SPEED SENSOR A/T
(REVOLUTION SEN-
SOR)",AT-201, "DTC
VEHICLE SPEED SEN-
SOR MTR"
3. PNP switch adjustmentAT-408, "
Park/Neutral Posi-
tion (PNP) Switch Adjust-
ment"
4. Engine speed signalAT-129, "DTC P0725
ENGINE SPEED SIGNAL"
5. A/T fluid temp sen circ and TCM pow sourAT-195, "
DTC BATT/FLUID
TEMP SEN (A/T FLUID
TEMP SENSOR CIRCUIT
AND TCM POWER
SOURCE)"
6. Line pressure testAT-67, "Line Pressure Test"
7. Torque converter clutch solenoid valveAT-159, "
DTC P0740
TORQUE CONVERTER
CLUTCH SOLENOID
VA LV E"
8. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 9. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Symptom Condition Diagnostic ItemReference Page
EURO-OBD

DTC P0734 A/T 4TH GEAR FUNCTION
AT-151
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
DTC P0734 A/T 4TH GEAR FUNCTIONPFP:31940
DescriptionECS007OU
●This is an OBD-II self-diagnostic item and not available in TCM self-diagnosis.
●This malfunction will not be detected while the O/D 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 VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSTIC LOGIC
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.
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)
Monitor item Condition Specification
Line pressure solenoid valve dutySmall throttle opening
(Low line pressure)
↓
Large throttle opening
(High line pressure)Approximately 24%
↓
Approximately 95%
Te r m i -
nal No.Wire color Item ConditionJudgement stan-
dard
(Approx.)
1R/WLine pressure
solenoid valveWhen releasing accelerator pedal
after warming up engine.1.5 - 3.0V
When depressing accelerator pedal
fully after warming up engine.0V
2P/BLine pressure
solenoid valve
(with dropping
resistor)When releasing accelerator pedal
after warming up engine.5 - 14V
When depressing accelerator pedal
fully after warming up engine.0V
11 L / WShift solenoid
valve AWhen shift solenoid valve A oper-
ates.
(When driving in “D
1 ” or “D4 ”.)Battery voltage
When shift solenoid valve A does not
operate.
(When driving in “D
2 ” or “D3 ”.)0V
12 L/YShift solenoid
valve BWhen shift solenoid valve B oper-
ates.
(When driving in “D
1 ” or “D2 ”.)Battery voltage
When shift solenoid valve B does not
operate.
(When driving in “D
3 ” or “D4 ”.)0V