Infiniti QX4 (R50). Manual — part 22
Items
Symptom
Condition
Diagnostic Item
Reference Page
No Up Shift
Failure to change
gear from D
3
to
D
4
.
ON vehicle
1. Park/neutral position (PNP) switch
adjustment
2. Manual control linkage adjustment
3. Shift solenoid valve A
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
5. A/T fluid temperature sensor
OFF vehicle
6. Brake band
A/T does not shift
to D
4
when driv-
ing with overdrive
control switch ON.
ON vehicle
1. Throttle position sensor (Adjustment)
2. Park/neutral position (PNP) switch
adjustment
3. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
4. Shift solenoid valve A
5. Overrun clutch solenoid valve
6. Control valve assembly
7. A/T fluid temperature sensor
8. Line pressure solenoid valve
OFF vehicle
9. Brake band
10. Overrun clutch
Slips/Will Not
Engage
Vehicle will not
run in R position
(but runs in D, 2
and 1 positions).
Clutch slips.
Very poor accel-
eration.
AT-227
ON vehicle
1. Manual control linkage adjustment
2. Line pressure test
3. Line pressure solenoid valve
4. Control valve assembly
OFF vehicle
5. Reverse clutch
6. High clutch
7. Forward clutch
8. Overrun clutch
9. Low & reverse brake
Vehicle will not
run in D and 2
positions (but
runs in 1 and R
positions).
ON vehicle
1. Manual control linkage adjustment
OFF vehicle
2. Low one-way 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-85
Items
Symptom
Condition
Diagnostic Item
Reference Page
Slips/Will Not
Engage
Vehicle will not
run in D, 1, 2
positions (but
runs in R posi-
tion). Clutch slips.
Very poor accel-
eration.
AT-230
ON vehicle
1. Fluid level
2. Line pressure test
3. Line pressure solenoid valve
4. Control valve assembly
5. Accumulator N-D
OFF vehicle
6. Reverse clutch
7. High clutch
8. Forward clutch
9. Forward one-way clutch
10. Low one-way clutch
Clutches or
brakes slip some-
what in starting.
ON vehicle
1. Fluid level
2. Manual control linkage adjustment
3. Throttle position sensor (Adjustment)
4. Line pressure test
5. Line pressure solenoid valve
6. Control valve assembly
7. Accumulator N-D
OFF vehicle
8. Forward clutch
9. Reverse clutch
10. Low & reverse brake
11. Oil pump
12. Torque converter
ON vehicle
1. Fluid level
2. Line pressure test
3. Control valve assembly
OFF vehicle
4. Forward clutch
5. Oil pump
6. Torque converter
Almost no shock
or clutches slip-
ping in change
from D
1
to D
2
.
ON vehicle
1. Fluid level
2. Throttle position sensor (Adjustment)
3. Line pressure test
4. Accumulator servo release
5. Control valve assembly
OFF vehicle
6. Brake band
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-86
Items
Symptom
Condition
Diagnostic Item
Reference Page
Slips/Will Not
Engage
Almost no shock
or slipping in
change from D
2
to
D
3
.
ON vehicle
1. Fluid level
2. Throttle position sensor (Adjustment)
3. Line pressure test
4. Control valve assembly
OFF vehicle
5. High clutch
6. Forward clutch
Almost no shock
or slipping in
change from D
3
to
D
4
.
ON vehicle
1. Fluid level
2. Throttle position sensor (Adjustment)
3. Line pressure test
4. Control valve assembly
OFF vehicle
5. High clutch
6. Brake band
Races extremely
fast or slips in
changing from D
4
to D
3
when
depressing pedal.
ON vehicle
1. Fluid level
2. Throttle position sensor (Adjustment)
3. Line pressure test
4. Line pressure solenoid valve
5. Control valve assembly
OFF vehicle
6. High clutch
7. Forward clutch
Races extremely
fast or slips in
changing from D
4
to D
2
when
depressing pedal.
ON vehicle
1. Fluid level
2. Throttle position sensor (Adjustment)
3. Line pressure test
4. Line pressure solenoid valve
5. Shift solenoid valve A
6. Control valve assembly
OFF vehicle
7. Brake band
8. Forward clutch
Races extremely
fast or slips in
changing from D
3
to D
2
when
depressing pedal.
ON vehicle
1. Fluid level
2. Throttle position sensor (Adjustment)
3. Line pressure test
4. Line pressure solenoid valve
5. Control valve assembly
6. A/T fluid temperature sensor
OFF vehicle
7. Brake band
8. Forward clutch
9. High 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-87
Items
Symptom
Condition
Diagnostic Item
Reference Page
Slips/Will Not
Engage
Races extremely
fast or slips in
changing from D
4
or D
3
to D
1
when
depressing pedal.
ON vehicle
1. Fluid level
2. Throttle position sensor (Adjustment)
3. Line pressure test
4. Line pressure solenoid valve
5. Control valve assembly
OFF vehicle
6. Forward clutch
7. Forward one-way clutch
8. Low one-way clutch
Vehicle will not
run in any posi-
tion.
ON vehicle
1. Fluid level
2. Manual control linkage adjustment
3. Line pressure test
4. Line pressure solenoid valve
OFF vehicle
5. Oil pump
6. High clutch
7. Brake band
8. Low & reverse brake
9. Torque converter
10. Parking pawl components
NOT USED
Engine cannot be
started in P and N
positions.
AT-221
ON vehicle
1. Ignition switch and starter
2. Manual control linkage adjustment
3. Park/neutral position (PNP) switch
adjustment
Engine starts in
positions other
than P and N.
AT-221
ON vehicle
1. Manual control linkage adjustment
2. Park/neutral position (PNP) switch
adjustment
Transmission
noise in P and N
positions.
ON vehicle
1. Fluid level
2. Line pressure test
3. Throttle position sensor (Adjustment)
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
5. Engine speed signal
OFF vehicle
6. Oil pump
7. Torque converter
Vehicle moves
when changing
into P position or
parking gear does
not disengage
when shifted out
of P position.
AT-222
ON vehicle
1. Manual control linkage adjustment
OFF vehicle
2. Parking pawl components
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-88
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст