2003 NISSAN ALMERA N16 Engine Control

TROUBLE DIAGNOSIS — INTRODUCTION
AT-257
[EXC.F/EURO-OBD]
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Diagnostic Worksheet
1.❏ Read the Fail-safe and listen to customer complaints.AT- 2 5 6 ,
"Information
from Cus-
tomer"
2.❏ CHECK A/T FLUIDAT- 2 6 1 , "A/T
Fluid Check"❏ Leakage (Follow specified procedure)
❏ Fluid condition
❏ Fluid level
3.❏ Perform STALL TEST and LINE PRESSURE TEST.AT- 2 6 2 , "
Sta l l
Te s t",
AT- 2 6 5 , "
Line
Pressure
Te s t"
❏ Stall test — Mark possible damaged components/others.
❏ Torque converter one-way clutch
❏ Reverse clutch
❏ Forward clutch
❏ Overrun clutch
❏ Forward one-way clutch❏ Low & reverse brake
❏ Low one-way clutch
❏ Engine
❏ Line pressure is low
❏ Clutches and brakes except high clutch and
brake band are OK
❏ Line Pressure test — Suspected parts:
4.❏ Perform all ROAD TEST and mark required procedures.AT- 2 6 6 ,
"Road Test"
4-
1.Check before engine is started.AT- 2 6 8 , "1.
CHECK
BEFORE
ENGINE IS
STARTED"
❏ SELF-DIAGNOSTIC CONFIRMATION PROCEDURE — Mark detected items.
❏ Vehicle speed sensor·A/T (Revolution sensor), AT- 3 4 3
.
❏ Vehicle speed sensor·MTR, AT-348
.
❏ Accelerator pedal position (APP) sensor, AT-352
.
❏ Shift solenoid valve A, AT- 3 5 7
.
❏ Shift solenoid valve B, AT- 3 6 2
.
❏ Overrun clutch solenoid valve, AT- 3 6 7
.
❏ Torque converter clutch solenoid valve, AT-372
.
❏ A/T fluid temperature sensor and TCM power source, AT-377
.
❏ Engine speed signal, AT- 3 8 3
.
❏ Line pressure solenoid valve, AT-388
.
❏ CAN communication line, AT- 3 9 5
.
❏ Control unit (RAM), control unit (ROM), AT-205
.
❏ Control unit (EEP ROM), AT-207
.
❏ PNP & overdrive control switches, and throttle position sensor, AT- 3 3 3
.
❏ Battery
❏ Others
4-
2.Check at idleAT- 2 6 9 , "
2.
CHECK AT
IDLE"❏ 1. O/D OFF Indicator Lamp Does Not Come On, AT- 3 0 9 .
❏ 2. Engine Cannot Be Started In “P” And “N” Position, AT-309
.
❏ 3. In “P” Position, Vehicle Moves Forward Or Backward When Pushed, AT-310
.
❏ 4. In “N” Position, Vehicle Moves, AT- 3 11
.
❏ 5. Large Shock. “N” → “R” Position, AT- 3 1 2
.
❏ 6. Vehicle Does Not Creep Backward In “R” Position, AT-313
.
❏ 7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position, AT- 3 1 6
.

AT-258
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION
4. 4-
3.Cruise testAT-271, "3.
CRUISE
TEST",
AT-275,
"Cruise Test
— Part 1"
Part-1
❏ 8. Vehicle Cannot Be Started From D
1 , AT- 3 1 7 .
❏ 9. A/T Does Not Shift: D
1→ D2 Or Does Not Kickdown: D4→ D2 , AT- 3 2 0 .
❏ 10. A/T Does Not Shift: D
2→ D3 , AT-322 .
❏ 11. A/T Does Not Shift: D
3→ D4 , AT-324 .
❏ 12. A/T Does Not Perform Lock-up,AT-326
.
❏ 13. A/T Does Not Hold Lock-up Condition, AT-326
.
❏ 14. Lock-up Is Not Released, AT-328
.
❏ 15. Engine Speed Does Not Return To Idle (Light Braking D
4→ D3 ), AT- 3 2 8 .
Part-2AT-278,
"Cruise Test
— Part 2"❏ 16. Vehicle Does Not Start From D1 , AT-330 .
❏ 9. A/T Does Not Shift: D
1→ D2 Or Does Not Kickdown: D4→ D2 , AT- 3 2 0 .
❏ 10. A/T Does Not Shift: D
2→ D3 , AT-322 .
❏ 11. A/T Does Not Shift: D
3→ D4 , AT-324 .
Part-3AT-280,
"Cruise Test
— Part 3"❏ 17. A/T Does Not Shift: D4→ D3 When Overdrive Control Switch “ON” → “OFF”, AT- 3 3 0 .
❏ 15. Engine Speed Does Not Return To Idle (Engine Brake In D
3 ), AT-328 .
❏ 18. A/T Does Not Shift: D
3→ 22 , When Selector Lever “D” → “2” Position, AT- 3 3 1 .
❏ 15. Engine Speed Does Not Return To Idle (Light Braking D
4→D3 ),AT- 3 2 8 .
❏ 19. A/T Does Not Shift: 2
2→ 11 , When Selector Lever “2” → “1” Position, AT- 3 3 2 .
❏ 20. Vehicle Does Not Decelerate By Engine Brake, AT- 3 3 3
.
❏ 21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control Switches, and throttle position sen-
sor Circuit Checks), AT- 3 3 3
.
❏ SELF-DIAGNOSTIC PROCEDURE — Mark detected items.
❏ Vehicle speed sensor·A/T (Revolution sensor), AT-343
.
❏ Vehicle speed sensor·MTR, AT- 3 4 8
.
❏ Accelerator pedal position (APP) sensor, AT-352
.
❏ Shift solenoid valve A, AT-357
.
❏ Shift solenoid valve B, AT-362
.
❏ Overrun clutch solenoid valve, AT-367
.
❏ Torque converter clutch solenoid valve, AT- 3 7 2
.
❏ Batt/fluid temp sen (A/T fluid temperature sensor and TCM power source), AT-377
.
❏ Engine speed signal, AT-383
.
❏ Line pressure solenoid valve, AT-388
.
❏ CAN communication line, AT-395
.
❏ Control unit (RAM), control unit (ROM), AT- 2 0 5
.
❏ Control unit (EEP ROM), AT- 2 0 7
.
❏ PNP & overdrive control switches, and throttle position sensor, AT- 3 3 8
.
❏ Battery
❏ Others
5.❏ For self-diagnosis NG items, inspect each component. Repair or replace the damaged parts.AT- 2 5 0 ,
"SELF-DIAG-
NOSTIC
PROCE-
DURE
(WITHOUT
CONSULT-
II)"
6.❏ Perform all ROAD TEST and re-mark required procedures.AT-266,
"Road Test"

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-263
[EXC.F/EURO-OBD]
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JUDGEMENT OF STALL TEST
The test result and possible damaged components relating to each result are shown in the illustrations on next
page.
In order to pinpoint the possible damaged components, follow the WORK FLOW shown in AT- 2 5 9 , "
Work
Flow" .
NOTE:
Stall revolution is too high in “D”, “2” or “1” position:
●Slippage occurs in 1st gear but not in 2nd and 3rd gears...... Low one-way clutch slippage
●Slippage occurs in the following gears:
1st through 3rd gears in “D” position and engine brake functions with overdrive control switch set to
“OFF”.
1st and 2nd gears in “2” position and engine brake functions with accelerator pedal released (fully closed
throttle)...... Forward clutch or forward one-way clutch slippage
Stall revolution is too high in R position:
●Engine brake does not function in “1” position...... Low & reverse brake slippage
●Engine brake functions in “1” position...... Reverse clutch slippage
Stall revolution within specifications:
●Vehicle does not achieve speed of more than 80 km/h (50 MPH)...... One-way clutch seizure in torque
converter housing
CAUTION:
Be careful since automatic fluid temperature increases abnormally.
●Slippage occurs in 3rd and 4th gears in “D” position...... High clutch slippage
●Slippage occurs in 2nd and 4th gear in “D” position...... Brake band slippage
●Engine brake does not function in 2nd and 3rd gears in “D” position, 2nd gear in “2” position, and 1st gear
in “1” position with overdrive control switch set to “OFF”.
Stall revolution less than specifications:
●Poor acceleration during starts...... One-way clutch seizure in torque converter

AT-266
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
JUDGEMENT OF LINE PRESSURE TEST
Road TestECS007QU
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
●Fluid pressure leakage between oil strainer and pressure regulator valve
●Clogged strainer
Line pressure is low in particular posi-
tion.
●Fluid 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 , "
CLUTCH AND BAND CHART" .
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-268
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
1. CHECK BEFORE ENGINE IS STARTED
1. CHECK O/D OFF INDICATOR LAMP
1. Park vehicle on flat surface.
2. Turn ignition switch to “OFF” position.
3. Move selector lever to “P” position.
4. Set overdrive control switch to “ON” position.
5. Turn ignition switch to “ON” position. (Do not start engine.)
6. Does O/D OFF indicator lamp come on for about 2 seconds?
Ye s o r N o
Yes >> GO TO 2
No >> Stop ROAD TEST. GO TO AT- 3 0 9 , "
1. O/D OFF Indica-
tor Lamp Does Not Come On" .
2. CHECK O/D OFF INDICATOR LAMP
Does O/D OFF indicator lamp flicker for about 8 seconds?
Ye s o r N o
Yes >> Perform self-diagnosis and check NG items on the
DIAGNOSTIC WORKSHEET. Refer to AT- 2 5 6
and AT-
250, "SELF-DIAGNOSTIC PROCEDURE (WITHOUT
CONSULT-II)" .
No >> 1. Turn ignition switch to “OFF” position.
2. Perform self-diagnosis and note NG items.
Refer to AT- 2 5 0 , "
SELF-DIAGNOSTIC PROCEDURE
(WITHOUT CONSULT-II)" .
3. GO TO AT-269, "
2. CHECK AT IDLE" .
SAT774B
MCIA3103E
MCIA3103E

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-275
[EXC.F/EURO-OBD]
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Cruise Test — Part 1
1.CHECK STARTING GEAR (D1 ) POSITION
1. Drive vehicle for approx. 10 minutes to warm engine oil and ATF up to operating
temperature.
2. Park vehicle on flat surface.
3. Set overdrive control switch to “ON” position.
4. Move selector lever to “P” position.
5. Start engine.
6. Move selector lever to “D” position.
7. Accelerate vehicle by constantly depressing accelerator pedal
halfway.
8. Does vehicle start from D
1 ?
Read gear position.
Ye s o r N o
Ye s > > G O T O 2
No >>
●GO TO AT- 3 1 7 , "8. Vehicle Cannot Be Started From
D1" .
●Continue ROAD TEST. Refer to AT-266, "Road Test" . ATF operating temperature: 50 - 80°C (122 - 176°F)
SAT774B
SAT775B
SAT495G

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-283
[EXC.F/EURO-OBD]
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TROUBLE DIAGNOSIS — GENERAL DESCRIPTIONPFP:00000
Symptom ChartECS007QV
Numbers are arranged in order of inspection.
Perform inspections starting with number one and work up.
Symptom Condition Diagnostic Item Reference Page
Engine cannot start in “P” and “N”
positions.
AT-309, "
2. Engine Cannot Be Started
In “P” and “N” Position"
ON vehicle1. Ignition switch and starterEL-11, "POWER SUP-
PLY ROUTING",
SC-13, "STARTING SYS-
TEM"
2. Control cable adjustmentAT- 4 0 8 , "Control Cable
Adjustment"
3. PNP switch adjustmentAT- 4 0 8 , "
Park/Neutral
Position (PNP) Switch
Adjustment"
Engine starts in position other than
“N” and “P” positions.
AT-309, "
2. Engine Cannot Be Started
In “P” and “N” Position"
ON vehicle1. Control cable adjustmentAT- 4 0 8 , "
Control Cable
Adjustment"
2. PNP switch adjustmentAT- 4 0 8 , "
Park/Neutral
Position (PNP) Switch
Adjustment"
Transaxle noise in “P” and “N” posi-
tions.ON vehicle1. Fluid levelAT- 2 6 1 , "
FLUID LEVEL
CHECK"
2. Line pressure testAT- 2 6 5 , "Line Pressure
Te s t"
3. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT- 3 5 2 , "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 4 3 , "
VEHICLE
SPEED SENSOR - A/T
(REVOLUTION SEN-
SOR)"
AT- 3 4 8 , "DTC VEHICLE
SPEED SENSOR MTR"
5. Engine speed signalAT- 3 8 3 , "ENGINE SPEED
SIGNAL"
OFF vehicle6. Oil pumpAT- 4 3 5 , "
Oil Pump"
7. Torque converterAT- 4 1 7 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Vehicle moves when changing into “P”
position, or parking gear does not dis-
engage when shifted out of “P” posi-
tion.
AT-310, "
3. In “P” Position, Vehicle
Moves Forward Or Backward When
Pushed"
ON vehicle 1. Control cable adjustmentAT- 4 0 8 , "Control Cable
Adjustment"
OFF vehicle 2. Parking componentsAT- 4 7 8 , "
Output Shaft,
Idler Gear, Reduction Pin-
ion Gear and Bearing
Retainer"
Vehicle runs in “N” position.
AT- 3 11 , "
4. In “N” Position, Vehicle
Moves"
ON vehicle 1. Control cable adjustmentAT- 4 0 8 , "Control Cable
Adjustment"
OFF vehicle2. Forward clutchAT- 4 6 4 , "
Forward and
Overrun Clutches"
3. Reverse clutchAT- 4 5 5 , "Reverse Clutch"
4. Overrun clutchAT- 4 6 4 , "Forward and
Overrun Clutches"

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-285
[EXC.F/EURO-OBD]
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Sharp shock in shifting from “N” to “D”
position.ON vehicle1. Engine idling rpmEC-722, "
Idle Speed and
Ignition Timing"
2. Throttle position sensor Accelerator
pedal position (APP) sensor AdjustmentAT- 3 5 2 , "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
3. Line pressure testAT- 2 6 5 , "Line Pressure
Te s t"
4. A/T fluid temp sen circ and TCM pow
sourAT- 3 7 7 , "
BATT/FLUID
TEMP SEN (A/T FLUID
TEMP SENSOR CIR-
CUIT AND TCM POWER
SOURCE)"
5. Engine speed signalAT- 3 8 3 , "ENGINE SPEED
SIGNAL"
6. Line pressure solenoid valveAT- 3 8 8 , "
LINE PRES-
SURE SOLENOID
VA LV E"
7. Control valve assemblyAT- 4 0 6 , "
Control Valve
Assembly and Accumula-
tors"
8. Accumulator N-DAT- 4 0 6 , "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 9. Forward clutchAT- 4 6 4 , "Forward and
Overrun Clutches"
Vehicle will not run in “D” and “2” posi-
tions (but runs in “1” and “R” posi-
tions).ON vehicle 1. Control cable adjustmentAT- 4 0 8 , "
Control Cable
Adjustment"
OFF vehicle 2. Low one-way clutchAT- 4 1 3 , "
OVERHAUL",
AT- 4 1 7 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Vehicle will not run in “D”, “1”, “2” posi-
tions (but runs in “R” position). Clutch
slips. Very poor acceleration.
AT-316, "
7. Vehicle Does Not Creep
Forward In “D”,“2” Or “1” Position"
ON vehicle1. Fluid levelAT- 2 6 1 , "
FLUID LEVEL
CHECK"
2. Line pressure testAT- 2 6 5 , "Line Pressure
Te s t"
3. Line pressure solenoid valveAT- 3 8 8 , "
LINE PRES-
SURE SOLENOID
VA LV E"
4. Control valve assemblyAT- 4 0 6 , "
Control Valve
Assembly and Accumula-
tors"
5. Accumulator N-DAT- 4 0 6 , "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle6. Reverse clutch AT- 4 5 5 , "
Reverse Clutch"
7. High clutchAT- 4 5 9 , "High Clutch"
8. Forward clutchAT- 4 6 4 , "Forward and
Overrun Clutches"
9. Forward one-way clutchAT- 4 1 3 , "OVERHAUL"
10. Low one-way clutchAT- 4 1 3 , "
OVERHAUL",
AT- 4 1 7 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Symptom Condition Diagnostic Item Reference Page