Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 636

7A1–44 AUTOMATIC TRANSMISSION (4L30-E)

Line Pressure and Force Motor Current

KPa (kg/cm

2

/ PSI)

4. Start the engine and allow it to idle until the engine

coolant temperature reaches 70 - 80

°

C (158- 176

°

F).

5. Hold the brake pedal down as far as it will go.
6.

Place the selector in the “D” range.

7. Note the pressure gauge reading with the engine

idling.

8. Gradually push the accelerator pedal to the floor. The

throttle valve will be fully open.
Note the pressure gauge reading with the accelerator
pedal fully depressed.

NOTE:

Do not continuously run this test longer than 5
seconds.

9. Release the accelerator pedal.

10. Place the selector in the “N” range.
11. Run the engine at 1,200 rpm for one minute.

This will cool the transmission fluid.

12. Repeat Steps 7 - 11 for the “3”, “2”, “L”, and “R”

ranges.

13. Install a pressure detection plug to the transmission

case, applying recommended thread locking agent
(LOCTITE 242) or its equivalent to thread of plug.
Make sure that thread is cleaned before applying
locking agents.

14. Tighten the pressure detection plug to the specified

torque.

Pressure Detection Plug Torque

N·m (kg·m / lb·ft)

9 – 14 (0.9 – 1.4 / 7 – 10)

LEVER

ENGINE

FORCE

MODE

LINE PRESSURE

MOTOR

POSITION

SPEED

CURRENT

NORMAL/POWER

D, 3, 2, L

IDLE

312 – 363 (3.2 – 3.7 / 45.2 – 52.6)

VARIABLE

NORMAL/POWER

REVERSE

IDLE

419 – 486 (4.3 – 5.0 / 60.7 – 70.5)

0.9 – 1.0A

NORMAL/POWER

D, 3, 2, L

STALL SPEED

1236 – 1320 (12.6 – 13.5 / 179.3 – 191.4)

0.1 – 0.2A

NORMAL/POWER

REVERSE

STALL SPEED

1634 – 1743 (16.7 – 17.8 / 236.9 – 252.8)

0.1 – 0.2A

AUTOMATIC TRANSMISSION (4L30-E) 7A1–45

SHIFT SPEED CHART

Transfer gear ratio: High: 1.000

( 

Rear axle ratio: 4.555

)

“Normal mode”

Downshift

Km/h (mph)

Upshift

Km/h (mph)

Range

Throttle opening

1 

→

2

2 

→

3

3 

→

4

(First Gear) (Second Gear) (Second Gear) (Third Gear) (Third Gear) (Fourth Gear)

D

Fully opened

41 ~ 47 (25 ~ 29)

84 ~  90 (52 ~ 56)

127 ~ 133 (79 ~ 83)

(Drive)

Half throttle

33 ~ 39 (20 ~ 24)

60 ~  66 (37 ~ 41)

117 ~ 123 (73 ~ 76)

3

Fully opened

49 ~ 55 (30 ~ 34)

99 ~ 105 (62 ~ 66)

–

(Third)

Half throttle

32 ~ 38 (20 ~ 24)

58 ~  64 (36 ~ 40)

–

2

Fully opened

49 ~ 55 (30 ~ 34)

–

–

(Second)

Half throttle

32 ~ 38 (20 ~ 24)

–

–

Range

Throttle opening

1 

←

2

2 

←

3

3 

←

4

(First Gear) (Second Gear) (Second Gear) (Third Gear) (Third Gear) (Fourth Gear)

D

Fully opened

16 ~ 22 (10 ~ 14)

62 ~  68 (39 ~ 42)

104 ~ 110 (65 ~ 68)

(Drive)

Half throttle

15 ~ 21 (9 ~ 13)

34 ~  40 (21 ~ 25)

67 ~  73 (42 ~ 46)

Fully closed

14 ~ 20 (9 ~ 12)

21 ~  27 (13 ~ 17)

29 ~  35 (18 ~ 22)

3

Fully opened

39 ~ 45 (24 ~ 28)

87 ~  93 (54 ~ 58)

–

(Third)

Half throttle

15 ~ 21 (9 ~ 13)

34 ~  40 (21 ~ 25)

–

Fully closed

13 ~ 19 (8 ~ 12)

15 ~  21 (9 ~ 13)

–

2

Fully opened

40 ~ 46 (25 ~ 29)

94 ~ 100 (59 ~ 63)

–

(Second)

Half throttle

15 ~ 21 (9 ~ 13)

94 ~ 100 (59 ~ 63)

–

Fully closed

13 ~ 19 (8 ~ 12)

82 ~  88 (51 ~ 55)

–

L

–

50 ~ 56 (31 ~ 35)

–

–

(First)

7A1–46 AUTOMATIC TRANSMISSION (4L30-E)

“Power mode”

Upshift

Km/h (mph)

Downshift

Km/h (mph)

Range

Throttle opening

1 

→

2

2 

→

3

3 

→

4

(First Gear) (Second Gear) (Second Gear) (Third Gear) (Third Gear) (Fourth Gear)

D

Fully opened

49 ~ 55 (30 ~ 34)

99 ~ 105 (62 ~ 66)

169 ~ 175 (105 ~ 109)

(Drive)

Half throttle

37 ~ 43 (23 ~ 27)

74 ~  80 (46 ~ 50)

124 ~ 130 (77 ~ 81)

3

Fully opened

49 ~ 55 (30 ~ 34)

99 ~ 105 (62 ~ 66)

–

(Thire)

Half throttle

37 ~ 43 (23 ~ 27)

74 ~  80 (46 ~ 50)

–

2

Fully opened

49 ~ 55 (30 ~ 34)

–

–

(Second)

Half throttle

37 ~ 43 (23 ~ 27)

–

–

Range

Throttle opening

1 

←

2

2 

←

3

3 

←

4

(First Gear) (Second Gear) (Second Gear) (Third Gear) (Third Gear) (Fourth Gear)

D

Fully opened

40 ~ 46 (25 ~ 29)

90 ~  96 (56 ~ 60)

160 ~ 166 (100 ~ 104)

(Drive)

Half throttle

21 ~ 27 (13 ~ 17)

53 ~  59 (33 ~ 37)

98 ~ 104 (61 ~ 65)

Fully closed

13 ~ 19 (8 ~ 12)

24 ~  30 (15 ~ 19)

46 ~  52 (29 ~ 32)

3

Fully opened

40 ~ 46 (25 ~ 29)

90 ~  96 (56 ~ 60)

–

(Third)

Half throttle

21 ~ 27 (13 ~ 17)

53 ~  59 (33 ~ 37)

–

Fully closed

13 ~ 19 (8 ~ 12)

24 ~  30 (15 ~ 19)

–

2

Fully opened

40 ~ 46 (25 ~ 29)

94 ~ 100 (59 ~ 63)

–

(Second)

Half throttle

21 ~ 27 (13 ~ 17)

94 ~ 100 (59 ~ 63)

–

Fully closed

13 ~ 19 (8 ~ 12)

82 ~  88 (51 ~ 55)

–

L

–

50 ~ 56 (31 ~ 35)

–

–

(First)

LOCK-UP SPEED CHART

Transfer gear ratio: High: 1.000

( 

Rear axle ratio: 4.555

)

Km/h (mph)

Mode

Lock-Up ON

Lock-Up OFF

2nd

3rd

4th

2nd

3rd

4th

Normal

75 ~ 81

55 ~ 61

67 ~ 73

70 ~ 76

47 ~ 53

62 ~ 68

(47 ~ 50 )

(34 ~ 38)

(42 ~ 45)

(43 ~ 47)

(29 ~ 33)

(39 ~ 42)

Power

72 ~ 78

77 ~ 83

77 ~ 83

67 ~ 73

68 ~ 74

72 ~ 78

(45 ~ 48 )

(48 ~ 52)

(48 ~ 52)

(42 ~ 45)

(42 ~ 46)

(45 ~ 48)

D range
Throttle
opening
9%

AUTOMATIC TRANSMISSION (4L30-E) 7A1–47

ELECTRONIC DIAGNOSIS

HOW TO DIAGNOSE THE PROBLEM

1.

To avoid incorrect diagnostics: this book needs to be
followed accurately. Unless stated: do not jump
directly to a section that could contain the solution:
some important information may be missed.

2.

The sections in CAPITALS and bold are the main
sections that can be found in the contents.

3.

The GOTO “SECTION” means to continue to check
going to the “section”.

4.

The GOTHROUGH “SECTION” means to go through
the “section” and then to go back to the place the
GOTHROUGH was written.

5.

BASIC ELECTRIC CIRCUITS:
You should understand the basic theory of electricity.
This will include the meaning of voltage, amps,
ohms, and what happens in a circuit with an open or
shorted wire. You should also be able to read and
understand wiring diagrams.

6.

IGNITION CYCLE:
When the car is driven a malfunction can occur due to
a car wiring harness problem, in this case the driver
can reset the system (as on a personal computer). To
reset the computer he must:
(1) Stop the car and the engine.
(2) Turn the key ignition OFF.
(3) Turn the key ignition ON.