Isuzu Trooper (1998-2002 year). Manual — part 718
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–69
SHIFT POINT CHART AND LOCK-UP POINT CHART
SHIFT POINT CHART
(H2, H4)
(REAR AXLE RATIO: 4.300)
(RADIUS OF TIRE: 0.363m)
“NORMAL” mode
Up shift
km/h
Down shift
km/h
“POWER” mode
Up shift
km/h
Down shift
km/h
Range
Throttle Opening
1
⇒
2
2
⇒
3
3
⇒
4
D
Fully opened
39 - 45
78 - 84
128 - 134
Half throttle
22 - 28
48 - 54
89 - 95
2
Fully opened
39 - 45
89 - 95
—
Half throttle
22 - 28
89 - 95
—
Range
Throttle Opening
1
⇐
2
2
⇐
3
3
⇐
4
D
Fully opened
30 - 36
65 - 71
115 - 121
Half throttle
9 - 15
27 - 33
64 - 70
Fully closed
9 - 15
22 - 28
37 - 43
2
Fully opened
30 - 36
85 - 91
—
Half throttle
9 - 15
85 - 91
—
Fully closed
9 - 15
85 - 91
—
L
Fully opened
43 - 49
85 - 91
—
Half throttle
43 - 49
85 - 91
—
Fully closed
43 - 49
85 - 91
—
Range
Throttle Opening
1
⇒
2
2
⇒
3
3
⇒
4
D
Fully opened
39 - 45
78 - 84
128 - 134
Half throttle
29 - 35
58 - 64
89 - 95
2
Fully opened
39 - 45
89 - 95
—
Half throttle
22 - 28
89 - 95
—
Range
Throttle Opening
1
⇐
2
2
⇐
3
3
⇐
4
D
Fully opened
30 - 36
65 - 71
115 - 121
Half throttle
11 - 17
45 - 51
74 - 80
Fully closed
9 - 15
22 - 28
37 - 43
2
Fully opened
30 - 36
85 - 91
—
Half throttle
9 - 15
85 - 91
—
Fully closed
9 - 15
85 - 91
—
L
Fully opened
43 - 49
85 - 91
—
Half throttle
43 - 49
85 - 91
—
Fully closed
43 - 49
85 - 91
—
7A–70
AUTOMATIC TRANSMISSION (AW30-40LE)
LOCK-UP POINT CHART
(H2, H4)
(REAR AXLE RATIO: 4.300)
(RADIUS OF TIRE: 0.363m)
km/h
Range
A/T Mode
Throttle Opening : 20%
Lock-up ON
Lock-up OFF
3rd
4th
3rd
4th
D
NORMAL
47 - 53
62 - 68
45 - 51
55 - 61
POWER
47 - 53
66 - 72
45 - 51
55 - 61
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–71
826RY00017
TCM VOLTAGE CHECK
TCM voltage check is done to check for transmission and
transmission control module (TCM) problems which cannot be
detected by self-diagnosis.
Additionally, it serves as a back-up check for self-diagnosis.
Measure the voltage drop and make a continuity test for each
of the sensors, solenoids, and switches.
If the voltage is within the specified range and continuity exists,
that particular area of the TCM and automatic transmission
assembly is normal.
If voltage deviation or lack of continuity is discovered,
disconnect the applicable parts and check each of them
individually.
This will allow you to determine the trouble location (TCM,
automatic transmission unit, or another area of the vehicle).
Inspection Tool
Use a circuit tester to measure voltage and circuit continuity.
Insert the test probes from the connector wiring side. TCM
terminals are extremely small.
Wrap a piece of thin wire around the probe of tester.
This will make measurement easier.
TCM Voltage Check Procedure
1. Remove the TCM.
2. Turn the ignition switch on. Do not start the engine.
3. Measure the voltage at the terminal. Refer to
the following
table for the specified voltage ranges.
7A–72
AUTOMATIC TRANSMISSION (AW30-40LE)
TCM STANDARD VOLTAGE
Check circuit
Terminal
Measuring condition
Voltage (V)
+
-
Throttle position sensor
C79-6
C79-28
Throttle fully opened (WOT)
3.47
∼
4.56
Throttle fully closed (idling)
0.25
∼
0.45
C79-19
C79-18
Key switch ON
4.75
∼
5.25
Output revolution sensor
C79-4
C79-16
Engine idling in gear
0
∼
3
Input revolution sensor
C79-5
C79-17
Engine idling
0
∼
3
Speed meter sensor
C79-7
C78-15
or -19
Vehicle speed 10
∼
20 km/h
Less than 1.4
⇔
about 5
Brake switch
C78-18
C78-15
or -19
Depress brake
7
∼
16
Release brake
Less than 1
O/D OFF switch
C79-3
C78-15
or -19
O/D OFF switch ON (O/D OFF)
7
∼
16
O/D OFF switch OFF (O/D ON)
Less than 1
Neutral start switch
C79-2
C78-15
or -19
Selector “P” range
7
∼
16
(P)
Selector all ranges except “P”
Less than 1
Neutral start switch
C79-1
C78-15
or -19
Selector “R” range
7
∼
16
(R)
Selector all ranges except “R”
Less than 1
Neutral start switch
C79-9
C78-15
or -19
Selector “N” range
7
∼
16
(N)
Selector all ranges except “N”
Less than 1
Neutral start switch
C79-8
C78-15
or -19
Selector “D” range
7
∼
16
(D)
Selector all ranges except “D”
Less than 1
Neutral start switch
C79-21
C78-15
or -19
Selector “2” range
7
∼
16
(2)
Selector all ranges except “2”
Less than 1
Neutral start switch
C79-20
C78-15
or -19
Selector “L” range
7
∼
16
(L)
Selector all ranges except “L”
Less than 1
Engine revolution signal
C79-15
C78-15
or -19
Engine idling
Less than 1.4
⇔
9
∼
16
Diagnosis terminal
C79-24
C78-15
or -19
Self-diagnosis ON
0
∼
1.5
Power pattern switch
C79-23
C78-15
or -19
Power pattern switch OFF (NORMAL)
8
∼
16
Power pattern switch ON (POWER)
Less than 1.4
Winter select switch
C79-13
C78-15
or -19
Switch OFF
8
∼
16
Switch ON
Less than 1.4
Electrical source (Battery)
C78-13
C78-15
or -19
—
9
∼
16
Electrical source (Ignition)
C78-20
C78-15
or -19
Key switch ON
9
∼
16
Oil temperature warning lamp
C79-11
C78-15
or -19
Oil temperature warning lamp ON
Less than 1
Oil temperature warning lamp OFF
8
∼
16
“CHECK TRANS lamp”
C79-10
C78-15
or -19
“CHECK TRANS” lamp ON
Less than 1
“CHECK TRANS” lamp OFF
8
∼
16
Power lamp
C79-22
C78-15
or -19
Power lamp ON
Less than 1
Power lamp OFF
8
∼
16
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