automatic transmission fluid ISUZU TROOPER 1995 Owner's Manual

7 A-98 AUTOMATIC TRANSMISSION (4L30-E)
DIAGNOSTIC TROUBLE CODE (DTC) 33
TCC HIGH SHORT TO PLUS OR OPEN
This DTC flashes the CHECK TRANS indicator and
does NOT set the BACKUP MODE.
Circuit Description:
• The Torque Converter Clutch (TCC) solenoid is a
simple ON/OFF solenoid connected to the
adapter case valve body. When the solenoid is
energized
by the Transmission Control Module
(TCM), it opens a fluid port. When the port is
open,
line pressure actuates the converter clutch
control valve which engages the torque converter
clutch by exhausting the fluid. The TCM engages
the torque converter clutch only when all of the
following conditions exist:
G) The transmission is at operating temperature.
® The brake pedal is released.
® The transmission is operating in second, third
or fourth gear.
@ The engine is warm (more than 70°C).
® The shift pattern requests TCC apply.
® Shift finished.
(]) No malfunction which will disable the TCC:
DTC43, DTC55
(only short to ground).
• The solenoid is activated by a current. This
current is produced by applying a voltage to one
side (the High side) and a ground to the other
side (low side).
• The High Side Driver (HSD) is a circuit of the TCM
that acts as a switch between the solenoid and
the supply voltage. The High side of the TCC
solenoid is used to turn the TCC ON or OFF
because the Low side is permanently connected
to the ground of the transmission. In BACKUP
MODE
or when ignition is turned OFF the TCC
High Side is
turned OFF.
• The TCM continually monitors the solenoid
connection to its High Side Driver for either low
or high voltage.
• There is only one test of the HSD for TCC: when
the engine is cranked and the TCC is turned OFF.
•
If this circuit is shorted to plus, the TCC solenoid
is constantly commanded ON (shifts can be firm).
In 1st gear the TCC is hydraulically OFF, whatever
the TCC solenoid position. This means that the
car can be driven even with the TCC shorted to
voltage. The engine could stall when the driver is
braking strongly, if the car is stopped when the
transmission is still in second gear with TCC
applied. Note: The 3-2
shifts are very firm.
Diagnostic Aids:
• This diagnostic is an electrical test done by the
TCM.
• Detection conditions:
G) The solenoid high side connected to TCM
terminal C7 is shorted to voltage or open.
® The condition needs to be present for 0.13
second.
• Action after the detection time:
G) TCC is turned OFF.
® CHECK TRANS indicator turned ON.
•
Recovery conditions: To recover, do an IGNITION
CYCLE.
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TRANSMISSION
CONTROL MODULE (TCM)
•

7A-102 AUTOMATIC TRANSMISSION (4L30-E)
DIAGNOSTIC TROUBLE CODE
(DTC) 34
BAND APPLY SOLENOID SHORT TO GROUND OR OPEN
This DTC flashes the CHECK TRANS indicator and
sets the BACKUP
MODE.
Circuit Description:
• The band apply solenoid is a normally open
solenoid
which controls the flow of fluid for brake
band
application. The Transmission Control
Module (TCM) uses Pulse Width Modulation
(PWM) and changes the duty cycle to control the
solenoid. The
TCM turns the solenoid ON
(energized) and OFF (de-energized) at a constant
frequency. The length
of time the solenoid is
energized
during each ON/OFF cycle is called the
pulse
width. By varying or "modulating" the
pulse
width, the solenoid output pressure is
changed.
Since the solenoid is normally closed,
increasing the pulse width increases the duty
cycle and decreases the output pressure. PWM
control provides smooth band application
without an accumulator. The band is only
applied in first and second gears.
• In the event of an electrical failure (open), the
solenoid regulates at the
maximum oil flow (0%
duty cycle).
• The solenoid is activated by a current. This
current is produced
by applying a voltage to one
side (the High side) and a
ground to the other
side (low side).
• The High Side Driver (HSD) is a circuit of the TCM
that acts as a switch between the solenoids and
the
supply voltage. The High side of the solenoid
is
permanently supplied with voltage, except in
BACKUP
MODE or when Ignition is OFF the HSD
2{8)\l, M-7
r----C-90 BRN/YEL H-10 ( 12
is turned OFF.
• The TCM continually monitors the splenoid
connection
to its low Side Driver (LSD) for either
low or high voltage. The LSD is a circuit of the
TCM that acts as a switch between the solenoid
and
ground. When the solenoid is commanded
ON the TCM is switching the solenoid to ground.
• There are two tests of the LSD: when the engine
is cranked (DTC82) and
when the ignition is
turned ON (DTC34).
• When the ignition is turned ON, and before the
engine is cranked, the TCM activates the shift
solenoids (1-2/3-4, 2-3 and Band) to check for
short circuits or open circuits. To do so the gear
is set
to 4th, 3rd, 1st, 1st with band apply, 4th
with no HSD. Each one of the 5 tests requires
0.15 second. If the engine is cranked before the
end
of all tests, the remaining tests are not done.
Diagnostic Aids:
• This diagnostic is an electrical test done by the
TCM.
• Detection conditions:
CD The solenoid low side connected to TCM
terminal A9 is shorted to ground or open.
@ The test is only done when ignition is ON.
@ Engine Speed <480 RPM (not cranked) and
Output Speed= 0 RPM.
® The condition needs to be present for 0.15 to
0.75 second after ignition switch ON.
•
Action after the detection time: BACKUP MODE.
•
Recovery conditions: To recover, do an IGNITION
CYCLE.
: --r ----r ----
1-
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TRANSMISSION
CONTROL
MODULE (TCM)
•

7A-110 AUTOMATIC TRANSMISSION (4L30-E)
DIAGNOSTIC TROUBLE CODE (DTC) 41
SOLENOID 1-2/3-4 SHORT TO PLUS
This DTC flashes the CHECK TRANS indicator and
sets
the BACKUP MODE.
Circuit Description:
• The 1-2/3-4 solenoid is a simple ON/OFF solenoid
located in the main case valve body. The
solenoid is the normally closed-type. In second
or third gear the Transmission Control Module
(TCM) energizes the solenoid to open a fluid inlet
port. When the port is open, fluid pressure
actuates
the shift valve.
• The solenoid is activated by a current. This
current is produced by applying a voltage to one
side (the High side) and a ground to the other
side (Low side).
• The High Side Driver (HSD) is a circuit of the TCM
that acts as a switch between the solenoids and
the supply voltage. The High side of the solenoid
is permanently supplied with voltage, except in
BACKUP MODE or when ignition is OFF the HSD
is
turned OFF.
•
The TCM continually monitors the solenoid
connection to its Low Side Driver (LSD) for either
low or high voltage. The LSD is a circuit of the
TCM that acts as a switch between the solenoid
and ground. When the solenoid is commanded
ON the TCM is switching the solenoid to ground.
H-7
• There are two tests of the LSD: when the engine
is cranked (DTC82) and when the ignition is
turned ON (DTC41 ).
• When the ignition is turned ON, and before the
engine is cranked, the TCM activates the shift
solenoids ( 1-2/2-3, 2-3 and Band) to check for
short circuits or open circuits. To do so the gear
is set to 4th, 3rd, 1st, 1st with band apply, 4th
with no HSD. Each one of the 5 tests requires
0.15 second. If the engine is cranked before the
end of all tests, the remaining tests are not done.
Diagnostic Aids:
• This diagnostic is an electrical test done by the
TCM.
• Detection conditions:
CD The solenoid Low side connected to TCM
terminal A2 is shorted to plus.
@ The test is only done when ignition is ON.
@ Engine Speed < 480 RPM (not cranked) and
Output Speed = 0 RPM.
@ The condition needs to be present for 0.15 to
0.88 seGond after ignition switch ON.
•
Action after the detection time: BACKUP MODE.
•
Recovery conditions: To recover, do an IGNITION
CYCLE.
,.... BATTERY-1 C-90
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TRANSMISSION
CONTROL MODULE (TCMI
•

7A-112 AUTOMATIC TRANSMISSION (4l30-E)
DIAGNOSTIC TROUBLE CODE (DTC) 42
SOLENOID 2-3 SHORT TO PLUS
This DTC flashes the CHECK TRANS indicator and
sets the BACKUP MODE.
Circuit Description:
• The 2-3 solenoid is a simple ON/OFF solenoid
located
in the main case valve body. The
solenoid is the normally open-type. When the
port is open, fluid pressure actuates the shift
valve. In first or second gear the Transmission
Control Module (TCM) energizes the solenoid to
close a fluid inlet port.
• The solenoid is activated by a current. This
current is produced
by applying a voltage to one
side (the High side) and a
ground to the other
side (Low side).
• The High Side Driver (HSD) is a circuit of the TCM
that acts as a switch between the solenoids and
the
supply voltage. The High side of the solenoid
is permanently supplied with voltage, except in
BACKUP
MODE or when ignition is OFF the HSD
is turned OFF.
• The TCM continually monitors the solenoid
connection to its Low Side Driver (LSD) for either
low or high voltage. The LSD is a circuit of the
TCM
that acts as a switch between the solenoid
and ground. When the solenoid is commanded
ON the TCM is switching the solenoid to ground.
• There are two tests of the LSD: when the engine
is cranked (DTC82) and
when the ignition is
turned ON (DTC42).
• When the ignition is turned ON, and before the
engine is cranked, the TCM activates the
shift
solenoids (1-2/2-3, 2-3 and Band) to check for
short circuits or open circuits. To do so the gear
is set
to 4th, 3rd, 1st, 1st with band apply, 4th
with no HISD. Each one of the 5 tests requires
0.15 second. If the engine is cranked before the
end
of all tests, the remaining tests are not done.
Diagnostic Aids:
• This diagnostic is an electrical test done by the
TCM.
• Detection ~:onditions:
CD The solenoid Low side connected to TCM
terminal A3 shorted to plus.
® The test is only done when ignition is ON.
® Engine Speed < 480 RPM (not cranked) and
Output Speed = 0 RPM.
@ The condition needs to be present for 0.15 to
1.03 second after ignition switch ON.
•
Action after the detection time: BACKUP MODE.
• Recovery conditions: To recover, do an IGNITION
CYCLE.
•

7A-114 AUTOMATIC TRANSMISSION (4l30-E)
DIAGNOSTIC TROUBLE CODE (DTC) 43
TCC HIGH SHORT TO GROUND
This DTC does NOT flash the CHECK TRANS
indicator and does NOT set the BACKUP MODE.
Circuit Description:
• The Torque Converter Clutch (TCC) solenoid is a
simple ON/OFF solenoid connected to the
adapter case
valve body. When the solenoid is
energized
by the Transmission Control Module
(TCM), it opens a fluid port. When the port is
open,
line pressure actuates the converter clutch
control valve
which engages the torque converter
clutch by exhausting the fluid. The TCM engages
the
torque converter clutch only when all of the
following conditions exist:
G) The transmission is at operating temperature.
@ The brake pedal is released.
® The transmission is operating in second, third
or fourth gear.
® The engine is warm (more than 70°C).
@ The shift pattern requests TCC apply.
® Shift finished.
(f) No malfunction which will disable the TCC:
DTC33, DTC55 (only short to ground).
• The solenoid is activated by a current. This
current is produced
by applying a voltage to one
side (the High side) and a
ground to the other
side (low side).
• The High Side Driver (HSD) is a circuit of the TCM
that acts as a switch between the solenoid and
the supply voltage. The High side of the TCC
solenoid is used to turn the TCC ON or OFF
because the Low side is permanently connected
to the ground of the transmission. In BACKUP
MODE or when ignition OFF the TCC High Side is
turned OFIF.
• The TCM continually monitors the solenoid
connection of to its High Side Driver for either
low or high voltage.
• There is only one test of the HSD for TCC: when
the engine is cranked and the TCC is turned ON.
Diagnostic .Aids:
• This diagnostic is an electrical test done by the
TCM.
• Detection conditions:
G) The solenoid High side connected to TCM
terminal C7 is shorted to ground.
@ The condition needs to be present for 0.07
seconds after ignition switch ON.
•
Action after the detection time: TCC is turned
OFF.
• Recovery eonditions: To recover, do an IGNITION
CYCLE.
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g~~i~~TER I C7 II --1-- -- ---, AUTOMATIC
SOLENOID 1 TRANSMISSION
I
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CONTROL
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l---~ 01
TRANSMISSION CONTROL
MODULE (TCM)
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•

7A-116 AUTOMATIC TRANSMISSION (4L30-E)
DIAGNOSTIC TROUBLE CODE (DTC) 44
BAND APPLY SOLENOID SHORT TO PLUS
This DTC flashes the CHECK TRANS indicator and
sets the BACKUP
MODE.
Circuit Description:
• The band apply solenoid is a normally open
solenoid which controls the flow of fluid for brake
band
application. The Transmission Control
Module (TCM) uses Pulse Width Modulation
(PWM) and changes the duty cycle to control the
solenoid. The TCM turns the solenoid ON
(energized) and OFF (de-energized) at a constant
frequency. The
length of time the solenoid is
energized
during each ON/OFF cycle is called the
pulse width. By varying or "modulating" the
pulse width, the solenoid output pressure is
changed.
Since the solenoid is normally closed,
increasing the pulse width increases the duty
cycle and decreases the output pressure. PWM
control provides smooth band application
without an accumulator. The band is only applied
in first and second gears.
• In the event of an electrical failure (open), the
solenoid regulates at the maximum oil flow (0%
duty cycle).
•
The solenoid is activated by a current. This
current is produced by
applying a voltage to one
side (the High side) and a
ground to the other
side (low side).
• The High Side Driver (HSD) is a circuit of the TCM
that acts as a switch between the solenoids and
the
supply voltage. The High side of the solenoid
is permanently supplied with voltage, except in
BACKUP
MODE or when ignition is OFF the HSD
H-7
is turned OFF.
• The TCM continually monitors the solenoid
connection to its Low Side Driver (LSD) for either
low or high voltage. The LSD is a circuit of the
TCM
that acts as a switch between the solenoid
and ground. When the solenoid is commanded
ON the TCM is switching the solenoid to ground.
• There are two tests of the LSD: when the engine
is cranked (DTC82) and
when the ignition is
turned
ON (DTC44).
• When the ignition is turned ON, and before the
engine is cranked, the TCM activates the
shift
solenoids (1-2/3-4, 2-3 and Band) to check for
short circuits or open circuits. To do so the gear
is set
to 4th, 3rd, 1st, 1st with band apply, 4th
with no HSD. Each one of the 5 tests requires
0.15 second. If the engine is cranked before the
end
of all tests, the remaining tests are not done.
Diagnostic Aids:
• This diagnostic is an electrical test done by the
TCM.
• Detection conditions:
CD The solenoid Low side connected to TCM
termin.al A9 is shorted to voltage.
@ The test is only done when ignition is ON.
@ Engine Speed < 480 RPM (not cranked) and
Output
Speed = 0 RPM.
@ The condition needs to be present for 0.15 to
1.18 second after ignition switch ON.
•
Action after the detection time: BACKUP MODE.
•
Recovery conditions: To recover, do an IGNITION
CYCLE.
,... BATTERY-, C-90
I INPUT I? A4 GRN/WHT ·~-----BATTERY
( 4
I IGNITION I ? I INPUT A7 II
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TRANSMISSION
CONTROL MODULE (TCMI
C12
RED/GRN
BRN/YEL
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BRN/WHT
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«--------3-(D--,I'l----- --'~L -,,,l M-7
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H-10 ( 10
•

7A-138 AUTOMATIC TRANSMISSION (4L30-E)
DIAGNOSTIC TROUBLE CODE (DTC) 82
SHIFT OR BAND APPLY SOLENOIDS FAULTY DURING DRIVING
This DTC flashes the CHECK TRANS indicator and
sets
the BACKUP MODE.
Circuit Description:
• The shift solenoids are simple ON/OFF solenoids
located in the main case valve body. The
solenoids are
normally closed or open-type.
Depending
on gear the Transmission Control
Module (TCM) controls the solenoids to open or
close a fluid inlet port. When the port is open,
fluid pressure actuates the shift valve.
• The solenoid is activated by a current. This
current is produced by applying a voltage to one
side (the High side) and a
ground to the other
side (low side).
• The High Side Driver (HSD) is a circuit of the TCM
that acts as a switch between the solenoids and
the
supply voltage. The High side of the solenoid
is
permanently supplied with voltage, except in
BACKUP
MODE or when Ignition is OFF the High
Side Driver is turned
OFF.
• The Low Side Driver (LSD) is a circuit of the TCM
that acts as a switch between the solenoid and
ground. When the solenoid is commanded ON
the TCM is switching the solenoid to ground. The
TCM
continually monitors each solenoid
connection
to its Low Side Driver and to its High
Side Driver
for either low or high voltage.
• DTC82 is activated when the Shift High Side
Driver
or one of the Shift Low Side Drivers
senses a
short circuit or open circuit when the
engine is cranked, then when the car is driven.
DTC82 can be set
only when the TCM is
activating the solenoids in
with the problem
circuit.
• To know where the fault comes from, do
IGNITION CYCLE to use the TCM self-check of
solenoids when Engine is not cranked but
Ignition ON.
Diagnostic Aids:
• This diagnostic is an electrical test done by the
TCM.
• Detection conditions:
CD HSD or LSD is improperly ON.
@ The condition needs to be present for at least
0.15 sec:ond.
•
Action after the detection time: BACKUP MODE
•
Recovery conditions: To recover, do after
IGNITION CYCLE.
•

... ......,.
AUTOMATIC TRANSMISSION (4L30-E) 7A-155
ON-VEHICLE SERVICE
CHECKING TRANSMISSION FLUID
LEVEL
1. Park the vehicle on level ground.
2. Apply the parking brake.
3. Place the automatic transmission in "Park" and
start the engine.
Allow the engine to idle for
two minutes.
4. With the brakes applied, move the shifter lever
through all the gear ranges, ending in "Park".
5. Remove the dipstick, Carefully touch the
dipstick with your finger to determine the
temperature of the fluid. (Fig. 7A-14)
• If the fluid is cool or warm (approximately
room temperature) or slightly higher (but
not too hot to touch), the fluid level should
be within the "Cold" range.
• If the fluid is hot, the fluid level should be
(A; within the "Hot" range.
6.
Cold Hot
Fig. 7A-14
• If the vehicle has just been driven for a long
period of time at highway speeds or in city
traffic in hot weather, wait 30 minutes for
the fluid to cool down before checking fluid
level.
If fluid level is low, add enough DEXRON®-m
Automatic transmission fluid to bring trans­
mission
to its proper fluid level through the
transmission oil filler tube.
NOTE:
The automatic transmission fluid level must be
checked
with the vehicle at normal AfT oil
operating temperature: 75 TO 85°C (167 TO
185°F)
measured with TECH1 scan tool.
Overfilling or underfilling could result in
damage
to the transmission.
• If fluid level is low, inspect the area around
the oil pan for leakage.
•
If the fluid smells burnt or is black, replace
it.
CHANGING TRANSMISSION FLUID
There is no need to change the transmission fluid
unless the transmission is used under one or more
of the following heavy duty conditions.
A: Repeated
short trips
B: Driving on rough roads
C: Driving on dusty roads
D: Towing a trailer
If the vehicle is used under these conditions,
change the fluid every 20,000 miles (32,000 km.)
There is
no drain plug in the oil pan. Oil should be
extracted
with suitable suction device through the
filler tube. Alternately the fluid can be drained by
carefully removing the oil pan. Place a large drain
pan
under the oil pan, remove 13 bolts on the right,
left and front sides of the oil pan and loosen 3 bolts
on the rear side.
Drain
the fluid carefully.
Hold
the pan horizontally, remove the remaining 3
bolts and remove pan and gasket. Clean the oil pan
and
reinstall it . with a new gasket. It is also
recommended to replace the fixing bolts. Tighten
16 fixing bolts to 11 N·m (8 lb·ft.) torque.
MANUAL LINKAGE
~ INSPECTION
1. Make sure that when the shifter control lever is
shifted
from "P" to "L", a "clicking" can be felt
at each shift position. Make sure that the gear
corresponds
to that of the position plate
indicator.
2. Check to see if the shifter lever can be shifted
as
shown in Fig. 7A-15. jQ
~ Button must be pressed.
~ Button need not be pressed.
Fig. 7A-15

2. Exhaust and transfer protectors
~~~ Torque N-m(lb.ft) 37 (27)
1. Skid plate
• Connect negative (-) battery cable.
• Install
engine hood.
• Adjust shift lock cable.
Refer to "Selector lever" in this section.
SOLENOID VALVE
(MAIN CASE VALVE BODY)
l••l REMOVAL
Preparation:
• Disconnect negative {-) battery cable.
•
Remove exhaust protector and exhaust pipe.
1. Main case oil pan
• Remove sixteen 10 mm screws, main case
oil pan, magnet, and gasket.
• Drain fluid.
Refer to "CHANGING TRANSMISSION
FLUID".
2. Oil filter
• Remove three 13 mm screws, oil filter.
3. Wiring harness
• Disconnect wiring harness from band control
solenoid,
shift solenoids and main case 4 pin
connector.
Pull only on connectors, not on
wiring harness.
4. Spring pin (Fig. 7 A-29b and 7 A-29c)
• Remove spring pin for 1-2/3-4 shift solenoid,
2-3 shift solenoid, and band control solenoid
respectively,
using suitable pliers taking care
not to damage solenoids.
Fig. 7A-29b
AUTOMATIC TRANSMISSION (4L30 .. E) 7A-165
Fig. 7A-29c
5. Solenoids
• Remove 1-2/3-4 shift solenoid, 2-3 shift
solenoid, band control solenoid, and gaskets
from main case valve body. Do not pull on
wiring harness. Remove
· solenoids by
grasping the
metal tip.
I••! INSTALLATION
To install, follow the removal steps in the reverse
order,
noting the following points;
5. Solenoids
• Install 1-2/3-4 shift solenoid, 2-3 shift
solenoid, band control solenoid with new
gaskets to main case valve body respectively.
4. Spring pin (Fig. 7 A·29d)
• Carefully install spring pin with hammer to
avoid damage to valve body etc.
3. Wiring harness
• Connect wiring harness to solenoids and
main case 4 pin connector.
2. Oil filter
• Install oil filter with new gasket, three 13 mm
screws.
~~~ Torque N·m(lb.ft) 20 (15)
1. Main case oil pan
•
Install magnet, main case oil pan with new
gasket, sixteen 10 mm screws.
1~1 Torque N·m(lb·in) J 11 (96)
• Fill transmission through the oil filler tube,
using ATF DEXRQN®-m.
• Install exhaust protector and exhaust pipe.
• Connect negative (-) battery cable.

7A-166 AUTOMATIC TRANSMISSION (4l30-E)
Fig. 7A-29d
SOLENOID VALVE
(ADAPTER CASE VALVE BODY)
l++l REMOVAL
Preparation:
• Disconnect negative(-) battery cable.
• Remove exhaust protector and exhaust pipe.
• Drain fluid.
• Refer to "CHANGING TRANSMISSION FLUID".
1. Adapter case oil pan
• Remove twelve 10 mm screws, adapter case
oil pan, and gasket.
NOTE:
Oil pan still contains transmission fluid. Place a
large
drain container under the oil pan.
Drain
the fluid carefully.
2. Wiring harness
• Disconnect wiring harness from force motor
solenoid, converter clutch solenoid and 5
pin
connector of adapter case. Pull only on
connectors,
not on wiring harness.
Fig. 7A-29e Fig.
7A-29f
3. Solenoid (fig. 7 A-29e and 7 A-29f)
• Remove 11 mm bolt and converter clutch
solenoid
with two 0-rings.
• Remove 11 mm bolt, retainer, and force
motor solenoid.
1••1 INSTALLATION
To install, follow the removal steps in the reverse
order,
noting the following points;
3. Solenoid
• Install force motor solenoid, retainer, and 11
mm bolt to adapter case valve body.
~~~ Torque N-m(lb-in) I 10 (87)
• Install converter clutch solenoid with two 0-
rings, and 11 mm bolt to adapter case valve
body.
~~~ Torque N-mOb·in) 10 (87)
2. Wiring harness
• Connect w1nng harness assembly to
solenoids and 5 pin connector of adapter
case.
1. Adapter case oil pan
• Install adapter case oil pan, new gasket, and
twelve 10 mm screws.
~~~ Torque~ N·mOb·in) I 11 (96)
• Fill transmission through the oil filter tube,
usin~1 ATF DEXRON®-111.
• Install exhaust protector and exhaust pipe.
• Connect negative (-) battery cable.
•