TROUBLE DIAGNOSIS
AT-455
[RE5F22A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
Revision: November 2006
2006 Altima
In D or M range, does not downshift to 2nd
gear.
ON vehicle
1. Fluid level and state
2. TCM
3. Electric throttle control signal
4. Shift solenoid valve B
5. Shift solenoid valve C
6. Shift solenoid valve D
7. Pressure control solenoid valve A
8. Control valve assembly
OFF vehicle
9. U/D brake
10. B5 brake
In D or M range, does not downshift to 3rd
gear.
ON vehicle
1. Fluid level and state
2. TCM
3. Electric throttle control signal
4. Shift solenoid valve B
5. Shift solenoid valve C
6. Shift solenoid valve D
7. Control valve assembly
OFF vehicle
8. U/D clutch
9. U/D brake
In D or M range, does not downshift to 4th
gear.
ON vehicle
1. Fluid level and state
2. TCM
3. Electric throttle control signal
4. Shift solenoid valve B
5. Shift solenoid valve C
6. Control valve assembly
OFF vehicle
7. Forward and direct clutch assembly
8. 2nd coast brake
,
9. One-way clutch No.1
Does not lock-up or lock-up is not released.
ON vehicle
1. Fluid level and state
2. Stop lamp switch signal
3. ATF temperature sensor
4. TCM
5. Shift solenoid valve C
6. Shift solenoid valve D
7. Pressure control solenoid valve C
8. Control valve assembly
OFF vehicle
9. Torque converter
Symptom
Condition
Diagnostic Item
Reference
page