2002 NISSAN TERRANO engine control

CRUISE TEST Ð Part 1
Drive vehicle for approx. 10 minutes to
warm engine oil and ATF up to operating
temperature.
ATF operating temperature:
50 - 80ÉC (122 - 176ÉF)
1. Park vehicle on flat surface.
2. Set overdrive control switch to ªONº
position.
3. Move selector lever to ªPº position.
4. Start engine.
Move selector lever to ªDº position.
Accelerate vehicle by constantly depress-
ing accelerator pedal halfway.
Does vehicle start from D1?
Read gear position.
Ye s
ENo
Go to ª11. Vehicle Cannot
Be Started From D
1º,
AT-102.
Does A/T shift from D1to D2at the speci-
fied speed?
Read gear position, throttle open-
ing and vehicle speed.
Specified speed when shifting from
D
1to D2:
Refer to Shift schedule, AT-196.
Ye s
ENo
Go to ª12. A/T Does Not
Shift: D
1,D2Or Does
Not Kickdown: D
4,D2º,
AT-196.
Does A/T shift from D2to D3at the speci-
fied speed?
Read gear position, throttle posi-
tion and vehicle speed.
Specified speed when shifting from
D
2to D3:
Refer to Shift schedule, AT-104.
Ye s
ENo
Go to ª13. A/T Does Not
Shift: D
2,D3º, AT-104.
qA
(Go to next page.)
SAT774B
SAT775B
SAT495G
SAT401H
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TROUBLE DIAGNOSIS Ð Basic Inspection
Road Test (Cont'd)
AT-39

CRUISE TEST Ð Part 2
1. Confirm overdrive control switch is in
ªONº position.
2. Confirm selector lever is in ªDº position.
3. Accelerate vehicle by half throttle
again.
4. Does vehicle start from D
1?
Read gear position.
Ye s
ENo
Go to ª19. Vehicle Does
Not Start From D
1º,
AT-109.
1. Accelerate vehicle to 80 km/h (50
MPH) as shown in illustration.
2. Release accelerator pedal and then
quickly depress it fully.
3. Does A/T shift from D
4to D2as soon
as accelerator pedal is depressed fully?
Read gear position and throttle
position.
Ye s
ENo
Go to ª12. A/T Does Not
Shift: D
1,D2Or Does
Not Kickdown: D
4,D2º,
AT-103.
Does A/T shift from D2to D3at the speci-
fied speed?
Read gear position, throttle posi-
tion and vehicle speed.
Specified speed when shifting from
D
2to D3:
Refer to Shift schedule, AT-196.
Ye s
ENo
Go to ª13. A/T Does Not
Shift: D
2,D3º, AT-104.
1. Release accelerator pedal after shifting
from D
2to D3.
2. Does A/T shift from D
3to D4and does
vehicle decelerate by engine brake?
Read gear position, throttle posi-
tion and vehicle speed.
Ye s
ENo
Go to ª14. A/T Does Not
Shift: D
3,D4º, AT-105.
1. Decelerate to 10 km/h (6 MPH) with
accelerator pedal released and then
quickly depress it fully.
2. Does A/T shift from D
2to D1as soon
as accelerator pedal is depressed fully?
Ye s
ENo
Go to ª20. A/T Does Not
Shift: D
2,D1When
Depressing Accelerator
Pedalº, AT-110.
1. Stop vehicle.
2. Go to ªCruise test Ð Part 3º, AT-42.
SAT495G
SAT404H
SAT405H
SAT124I
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TROUBLE DIAGNOSIS Ð Basic Inspection
Road Test (Cont'd)
AT-41

CRUISE TEST Ð Part 3
1. Confirm overdrive control switch is in
ªONº position.
2. Confirm selector lever is in ªDº position.
Accelerate vehicle using half-throttle to D4.
Release accelerator pedal.
Set overdrive control switch to ªOFFº posi-
tion while driving in D
4.
Does A/T shift from D4to D3(O/D OFF)?Read gear position and vehicle
speed.
Ye s
ENo
Go to ª21. A/T Does Not
Shift: D
4,D3, When
Overdrive Control Switch
ªONº,ªOFFºº, AT-111.
Does vehicle decelerate by engine brake?
Ye s
ENo
Go to ª18. Engine Speed
Does Not Return To Idle
(Light Braking D
4,D3)º,
AT-108.
Move selector lever from ªDº to ª2º position
while driving in D
3(O/D OFF).
Does A/T shift from D3(O/D OFF) to 22?Read gear position.
Ye s
ENo
Go to ª22. A/T Does Not
Shift: D
3,22, When
Selector Lever ªDº,ª2º
Positionº, AT-111.
Does vehicle decelerate by engine brake?
Ye s
ENo
Go to ª18. Engine Speed
Does Not Return To Idle
(Light Braking D
4,D3)º,
AT-108.
1. Move selector lever from ª2º to ª1º posi-
tion while driving in 2
2.
2. Does A/T shift from 2
2to 11position?Read gear position.
Ye s
ENo
Go to ª23. A/T Does Not
Shift: 2
2,11, When
Selector Lever ª2º,ª1º
Positionº, AT-112.
Does vehicle decelerate by engine brake?
Ye s
ENo
Go to ª24. Vehicle Does
Not Decelerate By
Engine Brakeº, AT-112.
1. Stop vehicle.
2. Perform self-diagnosis. Refer to SELF-
DIAGNOSTIC PROCEDURE, AT-14.
SAT812A
SAT813A
SAT776BA
SAT791GA
SAT778B
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TROUBLE DIAGNOSIS Ð Basic Inspection
Road Test (Cont'd)
AT-42

Symptom Chart
FON vehicleEFOFF vehicleE
Reference page (AT- )27,
11 511 454,
60,
803063,
13966,
8469,
7276,
11 311 3 11 369,
123151,
155157157,
165161,
171175
Numbers are arranged in order of probability.
Perform inspections starting with number one and
work up. Circled numbers indicate that the transmis-
sion must be removed from the vehicle.
Fluid level
Control linkage
Park/neutral position switch
Throttle (accelerator) position sensor (Adjustment)
Revolution sensor and vehicle speed sensor
Engine speed signal
Engine idling speed
Line pressure
Control valve assembly
Shift solenoid valve A
Shift solenoid valve B
Line pressure solenoid valve
Torque converter clutch solenoid valve
Overrun clutch solenoid valve
A/T fluid temperature sensor
Accumulator N-D
Accumulator 1-2
Accumulator 2-3
Accumulator 3-4 (N-R)
Ignition switch and starter
Torque converter
Oil pump
Reverse clutch
High clutch
Forward clutch
Forward one-way clutch
Overrun clutch
Low one-way clutch
Low & reverse brake
Brake band
Parking pawl components
Engine does not start in ªNº, ªPº positions. . 2 3................1.......... .
Engine starts in position other than ªNº and ªPº. . 1 2................. .......... .
Transmission noise in ªPº and ªNº positions. 1 . . 3 4 5 . 2............q
7q6........ .
Vehicle moves when changing into ªPº position or
parking gear does not disengage when shifted out
of ªPº position.. 1.................. ..........q
2
Vehicle runs in ªNº position. . 1................2. ..q4.q3.q5... .
Vehicle will not run in ªRº position (but runs in ªDº,
ª2º and ª1º positions). Clutch slips.
Very poor acceleration.. 1.....24..3........ ..q
5q6q7.q8.q9..
Vehicle braked when shifting into ªRº position. 1 2.....35..4........ ...q
6q8.q9..q7.
Sharp shock in shifting from ªNº to ªDº position. . . . 2 .5137 . . 6 . . 48.... ....q
10..... .
Vehicle will not run in ªDº and ª2º positions (but runs
in ª1º and ªRº position).. 1.................. .......q
2.. .
Vehicle will not run in ªDº, ª1º and ª2º positions (but
runs in ªRº position). Clutch slips.
Very poor acceleration.1 ......24..3...5.... ..q
6q7q8q9.q10.. .
Clutches or brakes slip somewhat in starting. 1 2 . 3 . . . 4 6 . . 5 . . . 7 . . 8 .q
13q12q10.q9...q11..
Excessive creep. ......1............. .......... .
No creep at all. 1......23...........q
6q5..q4..... .
Failure to change gear from ªD
1ºtoªD2º. . 21.5...43.......... .........q6.
Failure to change gear from ªD
2ºtoªD3º. . 21.5...4.3......... ...q6.....q7.
Failure to change gear from ªD
3ºtoªD4º. . 21.4....3....5..... .........q6.
Too high a gear change point from ªD
1ºtoªD2º, from
ªD2ºtoªD3º, from ªD3ºtoªD4º.. ..12....34......... .......... .
Gear change directly from ªD
1ºtoªD3º occurs. 1...............2... .........q3.
Engine stops when shifting lever into ªRº, ªDº, ª2º
and ª1º.. .....1.3...2.......q
4......... .
Too sharp a shock in change from ªD
1ºtoªD2º. . ..1...24.....5.3... .........q6.
Too sharp a shock in change from ªD
2ºtoªD3º. . ..1...24........3.. ...q5.....q6.
TROUBLE DIAGNOSIS Ð General Description
AT-43

FON vehicleEFOFF vehicleE
Reference page (AT- )27,
11 511 454,
60,
803063,
13966,
8469,
7276,
11 311 3 11 369,
123151,
155157157,
165161,
171175
Numbers are arranged in order of probability.
Perform inspections starting with number one and
work up. Circled numbers indicate that the transmis-
sion must be removed from the vehicle.
Fluid level
Control linkage
Park/neutral position switch
Throttle (accelerator) position sensor (Adjustment)
Revolution sensor and vehicle speed sensor
Engine speed signal
Engine idling speed
Line pressure
Control valve assembly
Shift solenoid valve A
Shift solenoid valve B
Line pressure solenoid valve
Torque converter clutch solenoid valve
Overrun clutch solenoid valve
A/T fluid temperature sensor
Accumulator N-D
Accumulator 1-2
Accumulator 2-3
Accumulator 3-4 (N-R)
Ignition switch and starter
Torque converter
Oil pump
Reverse clutch
High clutch
Forward clutch
Forward one-way clutch
Overrun clutch
Low one-way clutch
Low & reverse brake
Brake band
Parking pawl components
Too sharp a shock in change from
ªD3ºtoªD4º.. ..1...24.........3. ......q6..q5.
Almost no shock or clutches slipping in change from
ªD
1ºtoªD2º.1 ..2...35.......4... .........q6.
Almost no shock or slipping in change from ªD
2ºto
ªD3º.1 ..2...35........4.. ...q6.....q7.
Almost no shock or slipping in change from ªD
3ºto
ªD4º.1 ..2...35.........4. ...q6.....q7.
Vehicle braked by gear change from ªD
1ºtoªD2º. 1 ................... ..q2q4...q5q3..
Vehicle braked by gear change from ªD
2ºtoªD3º. 1 ................... .........q2.
Vehicle braked by gear change from ªD
3ºtoªD4º. 1 ................... ..q4..q3q2... .
Maximum speed not attained. Acceleration poor. 1 . 2.....534.........q
11q10q6q7....q9q8.
Failure to change gear from ªD
4ºtoªD3º. 1 ..2....64.5.3...... ......q8.q7..
Failure to change gear from ªD
3ºtoªD2º or from
ªD4ºtoªD2º.1 ..2....534......... ...q6.....q7.
Failure to change gear from ªD
2ºtoªD1º or from
ªD3ºtoªD1º.1 ..2....534......... ...q7...q6.q8.
Gear change shock felt during deceleration by
releasing accelerator pedal.. ..1...24....3...... .......... .
Too high a change point from ªD
4ºtoªD3º, from ªD3º
to ªD2º, from ªD2ºtoªD1º.. ..12............... .......... .
Kickdown does not operate when depressing pedal
in ªD
4º within kickdown vehicle speed.. ..12....34......... .......... .
Kickdown operates or engine overruns when
depressing pedal in ªD
4º beyond kickdown vehicle
speed limit.. ..21....34......... .......... .
Races extremely fast or slips in changing from ªD
4º
to ªD3º when depressing pedal.1 ..2...35..4........ ...q6q7..... .
Races extremely fast or slips in changing from ªD
4º
to ªD2º when depressing pedal.1 ..2...365.4........ ....q8....q7.
Races extremely fast or slips in changing from ªD
3º
to ªD2º when depressing pedal.1 ..2...35..4..6..7.. ...q10q9....q8.
Races extremely fast or slips in changing from ªD
4º
or ªD3ºtoªD1º when depressing pedal.1 ..2...35..4........ ....q6q7.q8.. .
Vehicle will not run in any position. 1 2.....3...4........q
9q5.q6....q8q7q10
Transmission noise in ªDº, ª2º, ª1º and ªRº positions. 1...................q2......... .
TROUBLE DIAGNOSIS Ð General Description
Symptom Chart (Cont'd)
AT-44

FON vehicleEFOFF vehicleE
Reference page (AT- )27,
11 511 454,
60,
803063,
13966,
8469,
7276,
11 311 3 11 3139,
123151,
155157157,
165161,
171175
Numbers are arranged in order of probability.
Perform inspections starting with number one and
work up. Circled numbers indicate that the transmis-
sion must be removed from the vehicle.
Fluid level
Control linkage
Park/neutral position switch
Throttle (accelerator) position sensor (Adjustment)
Revolution sensor and vehicle speed sensor
Engine speed signal
Engine idling speed
Line pressure
Control valve assembly
Shift solenoid valve A
Shift solenoid valve B
Line pressure solenoid valve
Torque converter clutch solenoid valve
Overrun clutch solenoid valve
A/T fluid temperature sensor
Accumulator N-D
Accumulator 1-2
Accumulator 2-3
Accumulator 3-4 (N-R)
Ignition switch and starter
Torque converter
Oil pump
Reverse clutch
High clutch
Forward clutch
Forward one-way clutch
Overrun clutch
Low one-way clutch
Low & reverse brake
Brake band
Parking pawl components
Failure to change from ªD3º to ª2º when changing
lever into ª2º position.. 712....654..3...... ......q9..q8.
Gear change from ª2
1ºtoª22º in ª2º position. . . 1................. .......... .
Engine brake does not operate in ª1º position. .2134 . . . 65 . . . 7...... ......q
8.q9..
Gear change from ª1
1ºtoª12º in ª1º position. . 2 1................. .......... .
Does not change from ª1
2ºtoª11º in ª1º position. . . 1 . 2 . . . 4 3 . . . 5...... ......q6.q7..
Large shock changing from ª1
2ºtoª11º in ª1º posi-
tion.. .......1........... ........q2..
Transmission overheats. 1 . . 3 . . 2 4 6 . . 5........q
14q7q8q9q11.q12.q13q10.
ATF shoots out during operation.
White smoke emitted from exhaust pipe during
operation.1 ................... ..q
2q3q5.q6.q7q4.
Offensive smell at fluid charging pipe. 1...................q
2q3q4q5q7.q8.q9q6.
Torque converter is not locked up. . .3124 . 68 . . . 7 . 5.....q
9......... .
Torque converter clutch piston slip 1 . . 2 . . . 3 6 . . 5 4.......q
7......... .
Lock-up point is extremely high or low. . . . 1 2 . . . 4 . . . 3....... .......... .
A/T does not shift to ªD
4º when driving with over-
drive control switch ªONº.. .213..864...57..... ......q10..q9.
Engine is stopped at ªRº, ªDº, ª2º and ª1º positions. 1.......543.2....... .......... .
TROUBLE DIAGNOSIS Ð General Description
Symptom Chart (Cont'd)
AT-45

Terminal
No.Item ConditionJudgement
standard
10 Power source
When turning ignition switch to ªONº. Battery voltage
When turning ignition switch to
ªOFFº.Approximately 0V
11 Shift solenoid valve A
When shift solenoid valve A oper-
ates.
(When driving in ªD
1ºorªD4º.)Battery voltage
When shift solenoid valve A does not
operate.
(When driving in ªD
2ºorªD3º.)Approximately 0V
12 Shift solenoid valve BWhen shift solenoid valve B oper-
ates.
(When driving in ªD
1ºorªD2º.)Battery voltage
When shift solenoid valve B does
not operate.
(When driving in ªD
3ºorªD4º.)Approximately 0V
16Closed throttle position
switch
[in throttle (accelerator)
position switch]
When releasing accelerator pedal
after warming up engine.Battery voltage
When depressing accelerator pedal
after warming up engine.Approximately 0V
17Wide open throttle posi-
tion switch
[in throttle (accelerator)
position switch]When depressing accelerator pedal
more than half-way after warming up
engine.Battery voltage
When releasing accelerator pedal
after warming up engine.Approximately 0V
18A/T mode switch
ªSNOWºWhen setting A/T mode switch in
ªSNOWº position.Battery voltage
When setting A/T mode switch in
other position.Approximately 0V
19 Power source Same as No. 104
20Overrun clutch solenoid
valve
When overrun clutch solenoid valve
operates.Battery voltage
When overrun clutch solenoid valve
does not operate.Approximately 0V
22 Overdrive control switch
When setting overdrive control
switch in ªONº positionBattery voltage
When setting overdrive control
switch in ªOFFº position1V or less
26Park/neutral ª1º position
switchWhen setting selector lever to ª1º
position.Battery voltage
When setting selector lever to other
positions.Approximately 0V
27Park/neutral ª2º position
switchWhen setting selector lever to ª2º
position.Battery voltage
When setting selector lever to other
positions.Approximately 0V
28 Ground Ð Ð
TROUBLE DIAGNOSIS Ð General Description
TCM Terminals and Reference Value (Cont'd)
AT-47

DIAGNOSTIC PROCEDURE
Perform diagnostic test mode II (self-
diagnostic results) for engine control.
Refer to EC section [ªMalfunction Indicator
Lamp (MIL)º, ªON BOARD DIAGNOSTIC
SYSTEM DESCRIPTIONº].
OK
ENG
Check throttle (accelerator)
position sensor circuit for
engine control. Refer to
EC section [ªTROUBLE
DIAGNOSIS FOR ªTHRTL
(ACCEL) POSI SENº].
CHECK INPUT SIGNAL.
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in
Data Monitor.
3. Read out the value of ªTHRTL
POS SENº.
Voltage:
Fully-closed throttle:
Approximately 0.5V
Fully-open throttle:
Approximately 4V
-----------------------------------------------------------------------------------------------------------------------OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº posi-
tion. (Do not start engine.)
2. Check voltage between TCM ter-
minalsq
32andq42while accelerator
pedal is depressed slowly.
Voltage:
Fully-closed throttle valve:
Approximately 0.4V
Fully-open throttle valve:
Approximately 4V
(Voltage rises gradually in
response to throttle position)
OK
ENG
Check harness for short or
open between ECM and
TCM regarding throttle
(accelerator) position sen-
sor circuit. (Main harness)
CHECK THROTTLE (ACCELERATOR)
POSITION SWITCH.
Refer to ªCHECK THROTTLE (ACCEL-
ERATOR) POSITION SWITCHº, AT-88.
OK
ENG
Repair or replace dam-
aged parts.
Perform ªSELF-DIAGNOSIS CODE CON-
FIRMATION PROCEDUREº, AT-60.
OK
ENG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
YAT299
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TROUBLE DIAGNOSIS FOR THROTTLE POSI SEN
Throttle (Accelerator) Position Sensor (Cont'd)
AT-61