Infiniti QX4 (R50). Manual — part 23
Items
Symptom
Condition
Diagnostic Item
Reference Page
NOT USED
Vehicle runs in N
position.
AT-223
ON vehicle
1. Manual control linkage adjustment
OFF vehicle
2. Forward clutch
3. Reverse clutch
4. Overrun clutch
Vehicle braked
when shifting into
R position.
ON vehicle
1. Fluid level
2. Manual control linkage adjustment
3. Line pressure test
4. Line pressure solenoid valve
5. Control valve assembly
OFF vehicle
6. High clutch
7. Brake band
8. Forward clutch
9. Overrun clutch
Excessive creep.
ON vehicle
1. Engine idling rpm
Engine stops
when shifting
lever into R, D, 2
and 1.
ON vehicle
1. Engine idling rpm
2. Torque converter clutch solenoid valve
3. Control valve assembly
OFF vehicle
4. Torque converter
Vehicle braked by
gear change from
D
1
to D
2
.
ON vehicle
1. Fluid level
OFF vehicle
2. Reverse clutch
3. Low & reverse brake
4. High clutch
5. Low one-way clutch
Vehicle braked by
gear change from
D
2
to D
3
.
ON vehicle
1. Fluid level
OFF vehicle
2. Brake band
Vehicle braked by
gear change from
D
3
to D
4
.
ON vehicle
1. Fluid level
OFF vehicle
2. Overrun clutch
3. Forward one-way clutch
4. Reverse clutch
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-89
Items
Symptom
Condition
Diagnostic Item
Reference Page
NOT USED
Maximum speed
not attained.
Acceleration poor.
ON vehicle
1. Fluid level
2. Park/neutral position (PNP) switch
adjustment
3. Shift solenoid valve A
4. Shift solenoid valve B
5. Control valve assembly
OFF vehicle
6. Reverse clutch
7. High clutch
8. Brake band
9. Low & reverse brake
10. Oil pump
11. Torque converter
Transmission
noise in D, 2, 1
and R positions.
ON vehicle
1. Fluid level
ON vehicle
2. Torque converter
Engine brake
does not operate
in “1” position.
AT-252
ON vehicle
1. Park/neutral position (PNP) switch
adjustment
2. Manual control linkage adjustment
3. Throttle position sensor (Adjustment)
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
5. Shift solenoid valve A
6. Control valve assembly
7. Overrun clutch solenoid valve
OFF vehicle
8. Overrun clutch
9. Low & reverse brake
Transmission
overheats.
ON vehicle
1. Fluid level
2. Engine idling rpm
3. Throttle position sensor (Adjustment)
4. Line pressure test
5. Line pressure solenoid valve
6. Control valve assembly
OFF vehicle
7. Oil pump
8. Reverse clutch
9. High clutch
10. Brake band
11. Forward clutch
12. Overrun clutch
13. Low & reverse brake
14. Torque converter
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-90
Items
Symptom
Condition
Diagnostic Item
Reference Page
NOT USED
ATF shoots out
during operation.
White smoke
emitted from
exhaust pipe dur-
ing operation.
ON vehicle
1. Fluid level
OFF vehicle
2. Reverse clutch
3. High clutch
4. Brake band
5. Forward clutch
6. Overrun clutch
7. Low & reverse brake
Offensive smell at
fluid charging
pipe.
ON vehicle
1. Fluid level
OFF vehicle
2. Torque converter
3. Oil pump
4. Reverse clutch
5. High clutch
6. Brake band
7. Forward clutch
8. Overrun clutch
9. Low & reverse brake
Engine is stopped
at R, D, 2 and 1
positions.
ON vehicle
1. Fluid level
2. Torque converter clutch solenoid valve
3. Shift solenoid valve B
4. Shift solenoid valve A
5. Control valve assembly
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-91
AAT475A
TCM Terminals and Reference Value
=NBAT0027
PREPARATION
NBAT0027S01
I
Measure voltage between each terminal and terminal 25 or 48
by following “TCM INSPECTION TABLE”.
SAT217JB
TCM HARNESS CONNECTOR TERMINAL LAYOUT
NBAT0027S02
TCM INSPECTION TABLE
NBAT0027S03
(Data are reference values.)
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
1
GY
Line pressure
solenoid valve
When releasing accelerator pedal after warm-
ing up engine.
1.5 - 3.0V
When depressing accelerator pedal fully after
warming up engine.
0V
2
BR/Y
Line pressure
solenoid valve
(with dropping
resistor)
When releasing accelerator pedal after warm-
ing up engine.
5 - 14V
When depressing accelerator pedal fully after
warming up engine.
0V
3
G/OR
Torque converter
clutch solenoid
valve
When A/T performs lock-up.
8 - 15V
When A/T does not perform lock- up.
0V
4
—
—
—
—
5
—
—
—
—
6
—
—
—
—
7
—
—
—
—
8
—
—
—
—
9
—
—
—
—
10
W/R
Power source
When turning ignition switch to “ON”.
Battery volt-
age
When turning ignition switch to “OFF”.
0V
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
TCM Terminals and Reference Value
AT-92
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст