AT-94
[RE4F04B]
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
Revision: November 2006
2006 Altima
Shift Shock
Too sharp a
shock in change
from D
1
to D
2
.
ON vehicle
1. Throttle position sensor [accelerator pedal
position (APP) sensor] adjustment
2. Line pressure test
3. Accumulator servo release
4. Control valve assembly
5. A/T fluid temperature sensor
OFF vehicle
6. Brake band
Too sharp a
shock in change
from D
2
to D
3
.
ON vehicle
1. Throttle position sensor [accelerator pedal
position (APP) sensor] adjustment
2. Line pressure test
3. Control valve assembly
OFF vehicle
4. High clutch
5. Brake band
Too sharp a
shock in change
from D
3
to D
4
.
ON vehicle
1. Throttle position sensor [accelerator pedal
position (APP) sensor] adjustment
2. Line pressure test
3. Control valve assembly
OFF vehicle
4. Brake band
5. Overrun clutch
Gear change
shock felt during
deceleration by
releasing acceler-
ator pedal.
ON vehicle
1. Throttle position sensor [accelerator pedal
position (APP) sensor] adjustment
2. Line pressure test
3. Overrun clutch solenoid valve
4. Control valve assembly
Large shock
changing from 1
2
to 1
1
in 1 posi-
tion.
ON vehicle
1. Control valve assembly
ON vehicle
2. Low & reverse brake
Improper Shift
Timing
Too high a gear
change point from
D
1
to D
2
, from
D
2
to D
3
, from
D
3
to D
4
.
ON vehicle
1. Throttle position sensor [accelerator pedal
position (APP) sensor] adjustment
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
,
3. Shift solenoid valve A
4. Shift solenoid valve B
Gear change
directly from D
1
to D
3
occurs.
ON vehicle
1. Fluid level
2. Accumulator servo release
OFF vehicle
3. Brake band
Too high a
change point from
D
4
to D
3
, from
D
3
to D
2
, from
D
2
to D
1
.
ON vehicle
1. Throttle position sensor [accelerator pedal
position (APP) sensor] adjustment
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
,
Kickdown does
not operate when
depressing pedal
in D
4
within kick-
down vehicle
speed.
ON vehicle
1. Throttle position sensor [accelerator pedal
position (APP) sensor] adjustment
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTR
,
3. Shift solenoid valve A
4. Shift solenoid valve B
Items
Symptom
Condition
Diagnostic Item
Reference Page