Nissan Frontier D22. Manual — part 16
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-33
[RL4R01A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
PFP:00000
Symptom Chart
ECS007IV
Numbers are arranged in order of the inspection.
Perform inspections starting with number one and work up.
Numbers in the OFF VEHICLE columns indicate that the transmission must be removed from the vehicle to perform the inspection.
*: Valve suspected to be malfunctioning
Symptom
Condition
Diagnostic Item
Sharp shocks in shifting from N to D position
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Engine idling speed
4. Line pressure
5. Throttle wire
6. Accumulator N-D
7. Accumulator 3-4 (N-R)
8. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Accumulator control valve
* Throttle valve & detent valve
* Kickdown modifier valve
OFF VEHICLE
9. Reverse clutch
Shift shocks
When shifting from 1st to 2nd or 2nd to
3rd.
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Accumulator 1-2
6. Accumulator 2-3
7. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Accumulator control valve
When shifting from 3rd to 4th.
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Accumulator 3-4 (N-R)
6. Control valve
* 4th speed cut valve
* Pressure regulator valve
* Pressure modifier valve
OFF VEHICLE
7. Brake band
8. Overrun clutch
When shifting from D to 2 and 1 posi-
tion.
When overdrive control switch is set
from ON to OFF
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Overrun clutch reducing valve
OFF VEHICLE
6. Brake band
7. High clutch
Shift shocks
When shifting from 2nd to 1st in 1 posi-
tion
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Control valve
* Pressure regulator valve
* Pressure modifier valve
* 1st reducing valve
OFF VEHICLE
6. Low one-way clutch
AT-34
[RL4R01A]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Shift slippage when
upshifting
When shifting from 1st to 2nd
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Accumulator 1-2
6. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Kickdown modifier valve
OFF VEHICLE
7. Brake band
When shifting from 2nd to 3rd
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Accumulator 2-3
6. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Kickdown modifier valve
OFF VEHICLE
7. Brake band
8. High clutch
When shifting from 3rd to 4th
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Accumulator 3-4 (N-R)
6. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Kickdown modifier valve
OFF VEHICLE
7. Brake band
8. High clutch
Symptom
Condition
Diagnostic Item
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-35
[RL4R01A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
Shift slippage with
accelerator pedal
depressed
When shifting from 4th to 2nd.
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Governor pressure
5. Throttle wire
6. Accumulator N-D
7. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Kickdown modifier valve
* 4-2 sequence valve
8. Accumulator 3-4 (N-R)
9. Accumulator 1-2
10. Accumulator 2-3
11. Governor valve
* Primary governor valve
* Secondary governor valve 1
* Secondary governor valve 2
OFF VEHICLE
12. Torque converter
13. Fluid pump
14. Reverse clutch
15. High clutch
16. Forward clutch
17. Forward one-way clutch
18. Overrun clutch
19. Low one-way clutch
20. Low & reverse clutch
21. Brake band
When shifting from 4th to 3rd.
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Accumulator 1-2
6. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Kickdown modifier valve
7. Accumulator 2-3
8. Accumulator 3-4 (N-R)
OFF VEHICLE
9. Fluid pump
10. High clutch
11. Brake band
12. Overrun clutch
13. Low & reverse clutch
Symptom
Condition
Diagnostic Item
AT-36
[RL4R01A]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Shift slippage with
accelerator pedal
depressed
When shifting from 4th to 1st and shift-
ing from 3rd to 1st.
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Governor pressure
5. Throttle wire
6. Accumulator 2-3
7. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Kickdown modifier valve
* 3-2 timing valve
8. Governor valve
* Primary governor valve
* Secondary governor valve 1
* Secondary governor valve 2
OFF VEHICLE
9. High clutch
10. Brake band
11. Forward one-way clutch
Poor power/accelera-
tion
When vehicle starts.
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Accumulator 2-3
6. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Kickdown modifier valve
OFF VEHICLE
7. High clutch
8. Forward clutch
When upshifting.
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Governor pressure
6. Accumulator 2-3
7. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Kickdown modifier valve
* 3-2 timing valve
8. Governor valve
* Primary governor valve
* Secondary governor valve 1
* Secondary governor valve 2
OFF VEHICLE
9. Forward clutch
No engine braking
When shifting from D to 2 and 1 posi-
tion.
ON VEHICLE
1. Fluid level and fluid quality
2. Control linkage
3. Line pressure
4. Throttle wire
5. Accumulator 2-3
6. Control valve
* Pressure regulator valve
* Pressure modifier valve
* Throttle valve & detent valve
* Overrun clutch reducing valve
OFF VEHICLE
7. Overrun clutch
Symptom
Condition
Diagnostic Item
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