Infiniti I30 (A33). Manual — part 23
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-233
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. Control cable 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
GI
MA
EM
LC
EC
FE
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
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
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-90
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. Control cable 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 components
NOT USED
Engine cannot be
started in P and N
positions.
AT-222
ON vehicle
1. Ignition switch and starter
2. Control cable adjustment
3. Park/neutral position (PNP) switch
adjustment
Engine starts in
positions other
than P and N.
AT-222
ON vehicle
1. Control cable adjustment
2. Park/neutral position (PNP) switch
adjustment
Transaxle 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-223
ON vehicle
1. Control cable adjustment
OFF vehicle
2. Parking components
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-91
Items
Symptom
Condition
Diagnostic Item
Reference Page
NOT USED
Vehicle runs in N
position.
AT-224
ON vehicle
1. Control cable 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. Control cable 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
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Chart (Cont’d)
AT-92
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