1995 ISUZU TROOPER Workshop Manual

AUTOMATIC TRANSMISSION (4L30-E) 7A-17
Example of form completed.
A-Today's date : Month : April .............. Day: .13 ............. YOM: .1994 ..............
B-Ead U.er Name, Address : Dave Smith
6584, Arlington road
P1ymoutll Ml 48170
USA
C-Date or Problem :
Month : April... ................ Day:.8 ................ You : .1994 ...............
D-Mileace: E-With lguirioa ON is CHECK F -Car load whcu problem occartd:
12230 .. J.@1Km @! TRANS ludicator: 1 -Towing a trailer 2-.. 2 ....... people OR ......... Kg ashing 2-
Not Flashing
G-Weatbtr couditious wbeu H-Weather Temperature wheu I-Road Conditions ""hen problem J-Frequency or the Problem : problem: problem: : 1-Always ~sionaJ :
1-Clear 2- Cloudy 1-Hot 2-Wann 1-Any l.-lltto:r City ........ fio•~s/ y,
3-
Rain 4-Snow 3-Cool ~d 3-Owside City (j}Highway .. .3 ... tim~stmonth 5-Unstable (!).ny S-Unstable 6- y 5-Uphill ti-Downhill 3-Only Once 4-Otb.n: 7-Unpaved )8t.now 9-Others .......___
l!Jis 111P.
K -Euciue Coa.dition : L-Engiue Speed wbea the problem M-Traasmiuioo Condition wheu ~e IJJis 7~~· do l1ot
!-Always 2-At Cold occared: it occared: lJto a
~ing Warming up 1-Idling 2-Starting 1-Any 2-Idling C'collnt
er Warming
or Hot 3-Stalling (3Higt~RPM 3-Starting 4-Driving
5-Others S-Low RPM (~cceleratin~~~~g 7-lr. comer 8-JUftmg
IN-Irtbcrt is a Transmission drive ability problem BEFORE THE CHECK TRANS INVJCATOR WAS FLASHING :
1-NoPower in Range : All -P -R-N-D-3 - 2 - L during a: upshift: 1-2 I 2-3 J 3-4 or downshift: 4-3 I 3-2 / 2-1
~hift inR.ange:AII-P-R-~-0-3-2-L during a : up~hifl : 1-2 I 2-3 ! 3-4 01 uowushifl : ~-3 I 3-2 I 2-1 Shock in Range: AII-P-R-N -~ -2-L during·~-: I 2-3 I (Do~:Qi 3-2 I 2-l 4-Shift Slip in Range : All -P -R-N - D - 3 - 2 - L during a: ups "ft : 1-2 I 2-3 / 3-4 or dov.nshift : 4-3 / 3-2 I 2-1
S-Shift Delayed
in Range,.: All -P -R-N -D-3 -2 - L during
a :upshift : 1-2 I 2-3 I 3-4 or dovmshift : 4-3 I 3-2 I 2-1
6-Shift Point too higJl in Range :All -P-R-N • D-3-2-J.. during a : upshift : 1-2 I 2-3 ! 3-4 or downshift : 4-3 I 3-2 I 2-1 7-Shift Point too low
in Range :All -P-R-N-D-3-2; L during a :upshift : 1-2 I 2-3 I 3-4 or downshift : 4-3 I 3-2 I 2-1
8-TCC Shudder
in Range : All -P - R
- N - D - 3 -2 - L during
a :upshift : 1-2 I 2-3 I 3-4 or downshift : 4-3 I 3-2 I 2-1
9-Noise in Range : All -P -R-N -D-3 -2-L during a :upshift : 1-2 I 2-3 I 3-4 or downshift : 4-3 I 3-2 I 2-1
~oise type: 1-Buzz 2-Whine 3-Clunk 4-lWtle S-Whistle II 6-light 7-medium 8-heavy
10-0thor: ..................... inR.ange:AII-P-R-N-0-3-2-L during
a :upshift : 1-2 I 2-3 I 3-4 or downshift : 4-3 I 3-2 I 2-1
0-Other customer co accra aa.d com meat• :
(This is just an e~ample ). Shift shock very harsh
overall during a downshift. Not sure if
it's the 4-3 or 3-2.
P-huza Vehicle Code : 94 UCR Q -VIN Number 4S2CV58ZXM432404 7
R-Date ofVehieJe Re~stratioa Month : .November. Day: ... .18 ........ Year: . .1993 .........
S -Traaa.. mtldel : 4L30-E T-Aff Serial Number : 96 358 654
U-Yoali'D.ame: Joe Spring
V-Dealer Name, Address, Phooe
Kent Helfrich
Home-town ISUZU
900 -999 -9999

7A-18 AUTOMATIC TRANSMISSION (4L30-E)
GENERAL DIAGNOSIS PROCEDURE
I Complaint
1 Follow PRELIMINARY
INSPECTION CHART
Remove transmission
assembly and
repair/replace
as
required
transmission assembly
NO
NO
Perform repair
per
SYMPTOMS CHART
Can fault
TEST DRIVING
YES
YES
•

AUTOMATIC TRANSMISSION (4l30-E) 7A-19
PRELIMINARY INSPECTION CHART
Does symptom reflect
NORMAL OPERATIONS
OF 1994 -95 4L30·E
TRANSMISSION?
(See p.age-1-Ac13)
YES
Check CHART3: TRANSMISSION AND TCM IDENTIFICATION on page-~n.
Check TRANSMISSION FLUID LEVEL and CONDITION. See--page"'7A'•2'0.
Check manual linkage. TCM:
Transmission Control Module
Hydraulic system appears OK!
Are any DTC's stored in TCM?
NO
Refer to MANUAL LINKAGE in this manual.
See~.
Ll_v_e_rify_e_n_g_in_e..:.p_e~rf_or_m_a_n_c_e. ___ l--------1•~1 Refer to Engine Seeticm.
Road
test vehicle to verify concern l----------;..f~s~e;;e-;:ga;;;:;:ge~7.A:o.~2i2f;fo;;r~TiE:SsTTDD~RmlvliiNNiGG~.l
UCHECK TRANS"
flashing >--Y-ES ________ ~ See CHECK TRANS INDICATOR
CHART
on page 7A-23.
Any
Trouble Codes stored by TCM?
YES
See
MECHANICAL/HYDRAULIC DIAGNOSIS.~.
See ELECTRONIC DIAGNOSIS. ~r tliis nusnllal on-JH!ge 7A 45.

7 A-20 AUTOMATIC TRANSMISSION (4L30-E)
CHECKING TRANSMISSION FLUID
LEVEL AND CONDITION
Checking fluid level and condition (color and odor)
at
regular intervals will provide early diagnosis
information about the transmission. This inform­
ation may be used to correct a condition that, if not
detected early, could result in major transmission
repairs.
IMPORTANT: When new, automatic transmission
fluid is red in color. As the vehicle is driven, the
transmission
fluid will begin to look darker in color.
The
color may eventually appear light brown.
A DARK
brown color with burnt odor may indicate
excessive
fluid deterioration and signal a need for
fluid change.
FLUID LEVEL
When adding
or changing fluid, use only DEXRON
®-Ill.
Refer to the Maintenance and Lubrication (Section 0
of this manual) for maintenance information and
servicing
interval.
\f CAUTION: DO NOT OVERFILL
Overfilling will cause foaming, loss ~f fluid,
abnormal shifting and possible damage to
the transmission.
1. Start engine and drive vehicle until normal AfT
oil operating temperature is reached:
NOTE: The automatic transmission fluid level
must be checked with the vehicle at normal
A/T oil operating temperature: 75 TO 85°C
(167 TO 185°F) MEASURED WITH TECH1 SCAN
TOOL.
Temperature will greatly affect transmission
fluid level.
If the vehicle is not at normal AfT oil operating
temperature and the proper checking
procedures are
not followed, the result could
be a false reading of the fluid level indicator
and
an incorrect adjustment of the fluid level.
2. Park vehicle on level ground.
3. Move gear selector to "Park".
4. Apply parking brake and block wheels.
5. Allow vehicle to idle for 3 minutes with all
accessories turned off.
6. Check fluid level with engine running at idle:
Fluid should
be in "HOT" area on AfT dipstick
(Fig. 7A-6).
Check also color and condition (Refer to next
page.)
Hot
Cold ---IIU 0
0
Min
Dipstick
Fig. 7A-6
\f CAUTION:
DO NOT CHECK FLUID LEVEL UNDER THESE
CONDITIONS: •
At high ambient temperature above 30°C
(86°F).
Immediately after driving at sustained highway
speeds.
• In heavy city traffic during hot weather.
If vehicle is towing a trailer.
If the vehicle has been operated under these
conditions,
shut the engine off and allow the
vehicle to "cool" for thirty (30) minutes. After the
cool-down period, restart the vehicle and continue
from step 2 above.
'~I
......

AUTOMATIC TRANSMISSION (4L30-E) 7A-21
FLUID CONDITION
FLUID CONDITION
NORMAL* CONTAMINATED
COLOR
RED BROWN NON-TRANSPARENT BROWN OR LIGHT BROWN
/PINK
DRAIN NO
YES YES YES
REQUIRED?
CO NT AMI- NONE Very small amount Contamination by Large pieces of
NATION of foreign material coolant or other metal or other
in bottom of pan
source foreign material in
bottom of pan
1. LOW LEVEL:
A. Add fluid to -
Remove both pans -Repair/replace
obtain
proper radiator cooler
level
& check -Change filter -Transmission -Transmission
CORRECT for external overhaul required overhaul required
LEVEL leaks. See -Flush cooler -Check for:
& chart 16..811 • Damaged plates -Flush cooler and
CONDITION ~· -Add new fluid and seals cooler
lines
B. Correct cause • Contaminated -Add new fluid
of leak. -Check level solenoids
2. HIGH LEVEL: -Flush cooler -Check level
-Remove excess -Add new fluid
fluid -Check level
* Fluid should be changed according to maintenance schedule.