2003 NISSAN ALMERA N16 Engine Control

AT-286
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Clutches or brakes slip somewhat in
starting.ON vehicle1. Fluid levelAT-261, "
FLUID LEVEL
CHECK"
2. Control cable adjustmentAT-408, "Control Cable
Adjustment"
3. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT-352, "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
4. Line pressure testAT-265, "Line Pressure
Te s t"
5. Line pressure solenoid valveAT-388, "
LINE PRES-
SURE 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-722, "Idle Speed and
Ignition Timing"
No creep at all.
AT- 3 1 3 , "
6. Vehicle Does Not Creep
Backward In “R” Position" and AT-
316, "7. Vehicle Does Not Creep For-
ward In “D”,“2” Or “1” Position"
ON vehicle1. Fluid levelAT-261, "
FLUID LEVEL
CHECK"
2. Line pressure testAT-265, "Line Pressure
Te s t"
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 Item Reference Page

AT-288
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Too high a gear change point from “D1
” to “D2 ”, from “D2 ” to “D3 ”, from “D3
” to “D4 ”.
AT- 3 2 0 , "
9. A/T Does Not Shift: D1→
D2 Or Does No t K ick down : D4→ D2",
AT- 3 2 2 , "
1 0 . A /T D o e s N o t S h i f t: D2→
D3" and AT- 3 2 4 , "11. A/T Does Not
Shift: D3→ D4"
ON vehicle1.Throttle position sensor (Accelerator
pedal position (APP) sensor)AT-352, "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT-343, "
VEHICLE
SPEED SENSOR - A/T
(REVOLUTION SEN-
SOR)",AT-348, "DTC
VEHICLE SPEED SEN-
SOR MTR"
3. Shift solenoid valve AAT-357, "SHIFT SOLE-
NOID VALVE A"
4. Shift solenoid valve BAT-362, "SHIFT SOLE-
NOID VALVE B"
Gear change directly from “D1 ” to “D3
” occurs.ON vehicle1. Fluid levelAT-261, "
FLUID LEVEL
CHECK"
2. Accumulator servo releaseAT-406, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 3. Brake bandAT-483, "Band Servo Pis-
ton Assembly"
Engine stops when shifting lever into
“R”, “D”, “2” and “1”.ON vehicle1. Engine idling rpmEC-722, "
Idle Speed and
Ignition Timing"
2. Torque converter clutch solenoid valveAT-372, "
TORQUE CON-
VERTER CLUTCH
SOLENOID VALVE"
3. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 4. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Too sharp a shock in change from “D1
” to “D2 ”.ON vehicle1. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT-352, "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. Line pressure testAT-265, "Line Pressure
Te s t"
3. Accumulator servo releaseAT-406, "
Control Valve
Assembly and Accumula-
tors"
4. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
5. A/T fluid temp sen circ and TCM pow
sourAT-377, "
BATT/FLUID
TEMP SEN (A/T FLUID
TEMP SENSOR CIR-
CUIT AND TCM POWER
SOURCE)"
OFF vehicle 6. Brake bandAT-483, "Band Servo Pis-
ton Assembly"
Symptom Condition Diagnostic Item Reference Page

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-293
[EXC.F/EURO-OBD]
D
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MA
B
AT
Kickdown does not operate when
depressing accelerator pedal in “D
4 ”
within kick down vehicle speed.ON vehicle1. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT- 3 5 2 , "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 4 3 , "
VEHICLE
SPEED SENSOR - A/T
(REVOLUTION SEN-
SOR)",AT-348, "DTC
VEHICLE SPEED SEN-
SOR MTR"
3. Shift solenoid valve AAT- 3 5 7 , "SHIFT SOLE-
NOID VALVE A"
4. Shift solenoid valve BAT- 3 6 2 , "SHIFT SOLE-
NOID VALVE B"
Kickdown operates or engine over-
runs when depressing accelerator
pedal in “D
4 ” beyond kick down vehi-
cle speed limit.ON vehicle1. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 4 3 , "
VEHICLE
SPEED SENSOR - A/T
(REVOLUTION SEN-
SOR)",AT-348, "DTC
VEHICLE SPEED SEN-
SOR MTR"
2. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT- 3 5 2 , "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
3. Shift solenoid valve AAT- 3 5 7 , "SHIFT SOLE-
NOID VALVE A"
4. Shift solenoid valve BAT- 3 6 2 , "SHIFT SOLE-
NOID VALVE B"
Races extremely fast or slips in
changing from “D
4 ” to “D3 ” when
depressing accelerator pedal.ON vehicle1. Fluid levelAT- 2 6 1 , "
FLUID LEVEL
CHECK"
2. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT- 3 5 2 , "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
3. Line pressure testAT- 2 6 5 , "Line Pressure
Te s t"
4. Line pressure solenoid valveAT- 3 8 8 , "
LINE PRES-
SURE SOLENOID
VA LV E"
5. Control valve assemblyAT- 4 0 6 , "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle6. High clutchAT- 4 5 9 , "
High Clutch"
7. Forward clutchAT- 4 6 4 , "Forward and
Overrun Clutches"
Symptom Condition Diagnostic Item Reference Page

AT-296
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Failure to change from “D3 ” to “22 ”
when changing lever into “2” position.
AT- 3 3 1 , "
1 8 . A /T D o e s N o t S h i f t: D3→
22 , When Selector Lever “D”→“2”
Position"
ON vehicle1. PNP switch adjustmentAT-408, "
Park/Neutral
Position (PNP) Switch
Adjustment"
2. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT-352, "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
3. Overrun clutch solenoid valveAT-367, "
OVERRUN
CLUTCH SOLENOID
VA LV E"
4. Shift solenoid valve AAT-357, "SHIFT SOLE-
NOID VALVE A"
5. Shift solenoid valve BAT-362, "SHIFT SOLE-
NOID VALVE B"
6. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
7. Control cable adjustmentAT-408, "Control Cable
Adjustment"
Failure to change from “D3 ” to “22 ”
when changing lever into “2” position.
AT- 3 3 1 , "
1 8 . A /T D o e s N o t S h i f t: D3→
22 , When Selector Lever “D”→“2”
Position"
OFF vehicle8. Brake bandAT-483, "
Band Servo Pis-
ton Assembly"
9. Overrun clutchAT-464, "Forward and
Overrun Clutches"
Gear change from “22 ” to “23 ” in “2”
position.ON vehicle 1. PNP switch adjustmentAT-408, "Park/Neutral
Position (PNP) Switch
Adjustment"
Engine brake does not operate in “1”
position.
AT- 3 3 0 , "
16. Vehicle Does Not Start
From D1"
ON vehicle1. PNP switch adjustmentAT-408, "
Park/Neutral
Position (PNP) Switch
Adjustment"
2. Control cable adjustmentAT-408, "Control Cable
Adjustment"
3. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT-352, "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT-343, "
VEHICLE
SPEED SENSOR - A/T
(REVOLUTION SEN-
SOR)",AT-348, "DTC
VEHICLE SPEED SEN-
SOR MTR"
5. Shift solenoid valve AAT-357, "SHIFT SOLE-
NOID VALVE A"
6. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
7. Overrun clutch solenoid valveAT-367, "
OVERRUN
CLUTCH SOLENOID
VA LV E"
OFF vehicle8. Overrun clutchAT-464, "
Forward and
Overrun Clutches"
9. Low & reverse brakeAT-470, "Low & Reverse
Brake"
Symptom Condition Diagnostic Item Reference Page

AT-298
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Transmission overheats.ON vehicle1. Fluid levelAT-261, "
FLUID LEVEL
CHECK"
2. Engine idling rpmEC-722, "Idle Speed and
Ignition Timing"
3. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT-352, "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
4. Line pressure testAT-265, "Line Pressure
Te s t"
5. Line pressure solenoid valveAT-388, "
LINE PRES-
SURE 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-261, "
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 Item Reference Page

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-299
[EXC.F/EURO-OBD]
D
E
F
G
H
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MA
B
AT
Offensive smell at fluid charging pipe.ON vehicle 1. Fluid levelAT- 2 6 1 , "
FLUID LEVEL
CHECK"
OFF vehicle2. Torque converterAT- 4 1 7 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
3. Oil pumpAT- 4 3 5 , "Oil Pump"
4. Reverse clutchAT- 4 5 5 , "Reverse Clutch"
5. High clutchAT- 4 5 9 , "High Clutch"
6. Brake bandAT- 4 8 3 , "Band Servo Pis-
ton Assembly"
7. Forward clutchAT- 4 6 4 , "Forward and
Overrun Clutches"
8. Overrun clutchAT- 4 6 4 , "Forward and
Overrun Clutches"
9. Low & reverse brakeAT- 4 7 0 , "Low & Reverse
Brake"
Torque converter is not locked up.ON vehicle1. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT- 3 5 2 , "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 4 3 , "
VEHICLE
SPEED SENSOR - A/T
(REVOLUTION SEN-
SOR)",AT-348, "DTC
VEHICLE SPEED SEN-
SOR MTR"
3. PNP switch adjustmentAT- 4 0 8 , "
Park/Neutral
Position (PNP) Switch
Adjustment"
4. Engine speed signalAT- 3 8 3 , "ENGINE SPEED
SIGNAL"
5. 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)"
6. Line pressure testAT- 2 6 5 , "Line Pressure
Te s t"
7. Torque converter clutch solenoid valveAT- 3 7 2 , "
TORQUE CON-
VERTER CLUTCH
SOLENOID VALVE"
8. Control valve assemblyAT- 4 0 6 , "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle 9. Torque converterAT- 4 1 7 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Symptom Condition Diagnostic Item Reference Page

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-301
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
A/T does not shift to “D4 ” when driv-
ing with overdrive control switch “ON”.ON vehicle1. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT- 3 5 2 , "
ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
2. PNP switch adjustmentAT- 4 0 8 , "
Park/Neutral
Position (PNP) Switch
Adjustment"
3. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 3 4 3 , "
VEHICLE
SPEED SENSOR - A/T
(REVOLUTION SEN-
SOR)",AT-348, "DTC
VEHICLE SPEED SEN-
SOR MTR"
4. Shift solenoid valve AAT- 3 5 7 , "SHIFT SOLE-
NOID VALVE A"
5. Overrun clutch solenoid valveAT- 3 6 7 , "
OVERRUN
CLUTCH SOLENOID
VA LV E"
6. Control valve assemblyAT- 4 0 6 , "
Control Valve
Assembly and Accumula-
tors"
7. 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)"
8. Line pressure testAT- 2 6 5 , "Line Pressure
Te s t"
OFF vehicle9. Brake bandAT- 4 8 3 , "
Band Servo Pis-
ton Assembly"
10. Overrun clutchAT- 4 6 4 , "Forward and
Overrun Clutches"
Engine is stopped at “R”, “D”, “2” and
“1” positions.ON vehicle1. Fluid levelAT- 2 6 1 , "
FLUID LEVEL
CHECK"
2. Torque converter clutch solenoid valveAT- 3 7 2 , "
TORQUE CON-
VERTER CLUTCH
SOLENOID VALVE"
3. Shift solenoid valve AAT- 3 5 7 , "SHIFT SOLE-
NOID VALVE A"
4. Shift solenoid valve BAT- 3 6 2 , "SHIFT SOLE-
NOID VALVE B"
5. Control valve assemblyAT- 4 0 6 , "
Control Valve
Assembly and Accumula-
tors"
Symptom Condition Diagnostic Item Reference Page

CAN COMMUNICATION
AT-305
[EXC.F/EURO-OBD]
D
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AT
CAN COMMUNICATIONPFP:23710
System DescriptionECS007QX
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitECS007QY
×:Applicable
TYPE 1
System diagram
Input/output signal chart
T: Transmit R: Receive Body type Sedan/ 5DH/B/ 3DH/B
Axle2WD
Engine QG18DE QG15DE/QG18DE
Transmission A/T M/T
Brake controlABS
CAN communication unit
ECM××
TCM×
Smart entrance control unit××
Data link connector××
Combination meter××
CAN communication type AT-305, "
TYPE 1"AT- 3 0 6 , "TYPE 2"
SEL825Y
Signals ECM TCMSmart entrance
control unitCombination meter
Engine speed signal T R
Brake switch signal R T
Rear window defogger signal R T
Heater fan switch signal R T
Air conditioner switch signal R T
MI signal T R
Current gear position signal T R
Engine coolant temperature signal T R
Fuel consumption signal T R