Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Forester 1999-2004 Approved Subaru Forester 1999-2000 TRANSMISSION AND DIFFERENTIAL SECTION Automatic Transmission and Differential MSA5T0124A27498
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3-2 [T1000] DIAGNOSTICS
10. General Diagnostic Table
10. General Diagnostic Table
Symptom Problem parts
1) Inhibitor switch
Starter does not rotate when select lever is in "P" or "N"; 2) Select cable
starter rotates when select lever is in "R", "D", "3" or "2". 3) Select lever
4) Starter motor and harness
1) Strainer
2) Transfer duty solenoid
Abnormal noise when select lever is in "P" or "N". 3) Oil pump
4) Drive plate
5) ATF level too high or too low
1) Strainer
Hissing noise occurs during standing start.
2) ATF level too high or too low
1) Final gear
Noise occurs while driving in "D1".
2) Planetary gear
3) Reduction gear
Noise occurs while driving in "D2".
4) Differential gear oil level too high or too low
1) Final gear
2) Low & reverse brake
Noise occurs while driving in "D3".
3) Reduction gear
4) Differential gear oil level too high or too low
1) Final gear
2) Low & reverse brake
Noise occurs while driving in "D4". 3) Planetary gear
4) Reduction gear
5) Differential gear oil level too high or too low
1) Control valve
2) Lock-up damper
Engine stalls while shifting from one range to another.
3) Engine performance
4) Input shaft
1) Control module
Vehicle moves when select lever is in "N".
2) Low clutch
1) Control module
2) Harness
Shock occurs when select lever is moved from "N" to "D". 3) Control valve
4) ATF deterioration
5) Dropping resistor
1) Control valve
2) Low clutch
Excessive time lag occurs when select lever is moved from
3) Line pressure duty solenoid
"N" to "D".
4) Seal ring
5) Front gasket transmission case
1) Control module
2) Harness
Shock occurs when select lever is moved from "N" to "R". 3) Control valve
4) ATF deterioration
5) Dropping resistor
1) Control valve
2) Low & reverse clutch
Excessive time lag occurs when select lever is moved from 3) Reverse clutch
"N" to "R". 4) Line pressure duty solenoid
5) Seal ring
6) Front gasket transmission case
1) Parking brake mechanism
Vehicle does not start in any shift range (engine stalls).
2) Planetary gear
126
DIAGNOSTICS [T1000] 3-2
10. General Diagnostic Table
Symptom Problem parts
1) Strainer
2) Line pressure duty solenoid
3) Control valve
4) Drive pinion
5) Hypoid gear
6) Axle shaft
7) Differential gear
Vehicle does not start in any shift range (engine revving up).
8) Oil pump
9) Input shaft
10) Output shaft
11) Planetary gear
12) Drive plate
13) ATF level too low
14) Front gasket transmission case
1) Select cable
2) Select lever
Vehicle does not start in "R" range only (engine revving up). 3) Control valve
4) Low & reverse clutch
5) Reverse clutch
1) Low clutch
2) 2-4 brake
Vehicle does not start in "R" range only (engine stalls).
3) Planetary gear
4) Parking brake mechanism
Vehicle does not start in "D", "3" range only (engine revving 1) Low clutch
up). 2) One-way clutch
Vehicle does not start in "D", "3" or "2" range only (engine rev-
1) Low clutch
ving up).
Vehicle does not start in "D", "3" or "2" range only (engine
1) Reverse clutch
stalls).
Vehicle starts in "R" range only (engine revving up). 1) Control valve
1) Control valve
2) Low clutch
3) Reverse clutch
Acceleration during standing starts is poor (high stall rpm).
4) ATF level too low
5) Front gasket transmission case
6) Differential gear oil level too high or too low
1) Oil pump
Acceleration during standing starts is poor (low stall rpm). 2) Torque converter one-way clutch
3) Engine performance
1) Control module
2) Control valve
Acceleration is poor when select lever is in "D", "3" or "2"
3) High clutch
range (normal stall rpm).
4) 2-4 brake
5) Planetary gear
1) Control valve
Acceleration is poor when select lever is in "R" (normal stall 2) High clutch
rpm). 3) 2-4 brake
4) Planetary gear
1) Control module
2) Vehicle speed sensor 1 (Rear)
3) Vehicle speed sensor 2 (Front)
No shift occurs from 1st to 2nd gear. 4) Throttle position sensor
5) Shift solenoid 1
6) Control valve
7) 2-4 brake
1) Control module
2) Control valve
No shift occurs from 2nd to 3rd gear.
3) High clutch
4) Shift solenoid 2
127
3-2 [T1000] DIAGNOSTICS
10. General Diagnostic Table
Symptom Problem parts
1) Control module
2) Shift solenoid 1
No shift occurs from 3rd to 4th gear. 3) ATF temperature sensor
4) Control valve
5) 2-4 brake
1) Inhibitor switch
2) Control module
Engine brake is not effected when select lever is in "3" range.
3) Throttle position sensor
4) Control valve
Engine brake is not effected when select lever is in "3" or "2"
1) Control valve
range.
1) Control valve
Engine brake is not effected when select lever is in "1" range.
2) Low & reverse brake
1) Inhibitor switch
2) Control module
3) Vehicle speed sensor 1 (Front)
Shift characteristics are erroneous. 4) Vehicle speed sensor 2 (Rear)
5) Throttle position sensor
6) Control valve
7) Ground earth
1) Control module
2) Throttle position sensor
3) ATF temperature sensor
No lock-up occurs.
4) Control valve
5) Lock-up facing
6) Engine speed signal
Parking brake is not effected. 1) Select cable
Shift lever cannot be moved or is hard to move from "P" 2) Select lever
range. 3) Parking mechanism
ATF spurts out. 1) ATF level too high
Differential oil spurts out. 1) Differential gear oil too high
1) Seal pipe
Differential oil level changes excessively.
2) Double oil seal
1) High clutch
2) 2-4 brake
3) Low & reverse clutch
Odor is produced from ATF supply pipe.
4) Reverse clutch
5) Lock-up facing
6) ATF deterioration
1) Control module
2) Throttle position sensor
3) 2-4 brake duty solenoid
4) ATF temperature sensor
5) Line pressure duty solenoid
Shock occurs from 1st to 2nd gear. 6) Control valve
7) 2-4 brake
8) ATF deterioration
9) Engine performance
10) Dropping resistor
11) 2-4 brake timing solenoid
1) Control module
2) Throttle position sensor
3) 2-4 brake duty solenoid
4) ATF temperature sensor
Slippage occurs from 1st to 2nd gear. 5) Line pressure duty solenoid
6) Control valve
7) 2-4 brake
8) 2-4 brake timing solenoid
9) High clutch
128
DIAGNOSTICS [T1000] 3-2
10. General Diagnostic Table
Symptom Problem parts
1) Control module
2) Throttle position sensor
3) 2-4 brake duty solenoid
4) ATF temperature sensor
5) Line pressure duty solenoid
Shock occurs from 2nd to 3rd gear. 6) Control valve
7) High clutch
8) 2-4 brake
9) ATF deterioration
10) Engine performance
11) 2-4 brake timing solenoid
1) Control module
2) Throttle position sensor
3) 2-4 brake duty solenoid
4) ATF temperature sensor
Slippage occurs from 2nd to 3rd gear. 5) Line pressure duty solenoid
6) Control valve
7) High clutch
8) 2-4 brake
9) 2-4 brake timing solenoid
1) Control module
2) Throttle position sensor
3) 2-4 brake duty solenoid
4) ATF temperature sensor
5) Line pressure duty solenoid
6) Control valve
Shock occurs from 3rd to 4th gear.
7) 2-4 brake timing solenoid
8) 2-4 brake
9) ATF deterioration
10) Engine performance
11) Low clutch timing solenoid
12) Low clutch
1) Control module
2) Throttle position sensor
3) 2-4 brake duty solenoid
4) ATF temperature sensor
Slippage occurs from 3rd to 4th gear.
5) Line pressure duty solenoid
6) Control valve
7) 2-4 brake
8) 2-4 brake timing solenoid
1) Control module
2) Throttle position sensor
3) ATF temperature sensor
4) Line pressure duty solenoid
Shock occurs when select lever is moved from "3" to "2"
5) Control valve
range.
6) 2-4 brake duty solenoid
7) 2-4 brake
8) ATF deterioration
9) 2-4 brake timing solenoid
1) Control module
2) Throttle position sensor
3) ATF temperature sensor
4) Line pressure duty solenoid
Shock occurs when select lever is moved from "D" to "1"
5) Control valve
range.
6) ATF deterioration
7) 2-4 brake duty solenoid
8) 2-4 brake timing solenoid
9) Low clutch timing solenoid
129
3-2 [T1000] DIAGNOSTICS
10. General Diagnostic Table
Symptom Problem parts
1) Control module
2) Throttle position sensor
3) ATF temperature sensor
4) Line pressure duty solenoid
Shock occurs when select lever is moved from "2" to "1" 5) Control valve
range. 6) Low & reverse clutch
7) ATF deterioration
8) 2-4 brake duty solenoid
9) 2-4 brake timing solenoid
10) Low clutch timing solenoid
1) Control module
2) Throttle position sensor
3) ATF temperature sensor
4) Line pressure duty solenoid
Shock occurs when accelerator pedal is released at medium 5) Control valve
speeds. 6) Lock-up damper
7) Engine performance
8) 2-4 brake duty solenoid
9) 2-4 brake timing solenoid
10) Low clutch timing solenoid
1) Control module
2) Lock-up duty solenoid
Vibration occurs during straight-forward operation.
3) Lock-up facing
4) Lock-up damper
1) Control module
2) Vehicle speed sensor 1 (Front)
3) Vehicle speed sensor 2 (Rear)
4) Throttle position sensor
Vibration occurs during turns (tight corner "braking" phenom- 5) ATF temperature sensor
enon). 6) Transfer clutch
7) Transfer valve
8) Transfer duty solenoid
9) ATF deterioration
10) Harness
1) Control module
2) Vehicle speed sensor 2 (Front)
3) FWD switch
4) Throttle position sensor
5) ATF temperature sensor
Front wheel slippage occurs during standing starts.
6) Control valve
7) Transfer clutch
8) Transfer valve
9) Transfer pipe
10) Transfer duty solenoid
1) Control module
2) FWD switch
Vehicle is not set in FWD mode. 3) Transfer clutch
4) Transfer valve
5) Transfer duty solenoid
1) Select cable
2) Select lever
Select lever is hard to move.
3) Detent spring
4) Manual plate
1) Detent spring
Select lever is too high to move (unreasonable resistance).
2) Manual plate
1) Select cable
Select lever slips out of operation during acceleration or while 2) Select lever
driving on rough terrain. 3) Detent spring
4) Manual plate
130
3-2 DIAGNOSTICS
MEMO:
131
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