Isuzu Trooper (1998-2002 year). Manual - part 719

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–73

Check circuit

Terminal

Measuring condition

Voltage (V)

+

-

Winter lamp

C79-12

C78-15 

or -19

Winter lamp ON

Less than 1

Winter lamp OFF

8 

∼

 16

Solenoid S1

C78-4

C78-15 

or -19

OFF (3rd or O/D)

Less than 1

ON (1st or 2nd)

8

 ∼

 16

Solenoid S2

C78-3

C78-15 

or -19

OFF (1st or O/D)

Less than 1

ON (2nd or 3rd)

8 

∼

 16

Lock up solenoid SL

C78-12

C78-15 

or -19

OFF (Lock up OFF)

Less than 1

ON (Lock up ON)

8 

∼

 16

Pressure control solenoid

C78-11

C78-8

At throttle pressure changing

Less than 

1 

⇔

 8-16

Oil temperature sensor

C79-18

C79-27

ATF temperature 20

°

C

4.70

ATF temperature 80

°

C

3.65

Tech 2 diagnosis terminal 
(J1850)

C78-6

C78-15 

or -19

On diagnosis communication

0-1.5 

⇔

6.25-8.0

Throttle position sensor 
(ground)

C79-19

C78-15 

or -19

Key switch ON

-0.1 

∼

 0.1

7A–74

AUTOMATIC TRANSMISSION (AW30-40LE)

MEMO

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–75

ON-VEHICLE SERVICE

 242RX00001

TRANSIMISSION FLUID LEVEL AND
CONDITION

Park vehicle on level ground and set parking brake.
With the engine idling, move the shift lever through all
positions from "P" to "L", then return to position "P".
Check to see If the level of fluid comes to "HOT" range
of about 80

°

C (176

°

F) on the dipstick gauge.

If the level of fluid is too low, replenish to bring it to
maximum level in "HOT" range.

Inspection of fluid condition
If the ATF is black or smells burnt, replace it.

ATF REPLACEMENT

NOTE:
Do not overfill.

1) Remove the drain plug from oil pan and drain the

fluid.

2) Reinstall the drain plug securely.

3) With the engine OFF, add new fluid through the filler

tube.

4) Start the engine and shift the selector into all

position from "P" through "L", and then shift into "P".

5) With the engine idling, check the fluid level. Add fluid

up to the "COLD" level on the dipstick.

6) The ATF level must be checked again for correct

level with the "HOT" level.

NOTE:
To prevent fluid leaks, the drain plug gasket must be
replaced each time this plug is removed.

Transmission

Drain and refill

5.2 L

Dry fill

8.7 L

Fluid

BESCO ATF III

7A–76

AUTOMATIC TRANSMISSION (AW30-40LE)

249RY00010

249RY00008

NEUTRAL START SWITCH INSPECTION

Inspection

With a circuit tester, make a continuity test on the neutral start
switch with the moving piece set in each position.

❍

 

❍ 

Continuity

Removal

Preparation:

Disconnect negative (–) battery cable.

1. Remove rear sound cover.

2. Remove the rear side ATF cooler pipe from the

transmission elbow.

3. Disconnect neutral start switch connector.
4. Unstake the lock washer, and then remove the shaft nut.
5. Remove the neutral start switch.

Installation

To install, follow the removal steps in the reverse order, noting
the following points;

Adjustment

1) Loosen the neutral start switch bolt and set the shift

selector to the "N" range.

2) Align the groove and neutral basic line.

3) Hold in position and tighten the bolt.

Terminal 

Position

1

4

3

5

2

6

8

7

9

P

❍

❍

❍

❍

R

❍

❍

N

❍

❍

❍

❍

D

❍

❍

2

❍

❍

L

❍

❍

Torque

N·m (kg·cm/lb·in)

Nut

7 (70/61)

Bolt

13 (130/113)