Isuzu Trooper (1998-2002 year). Service manual — part 720
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–77
310RW020
F07RY00017
F07RY00018
BRAKE SIGNAL INSPECTION
Check that the brake light comes on when the brake pedal is
depressed.
VEHICLE SPEED SENSOR INSPECTION
1. Connect the Vehicle speed sensor connector terminal (1) to
the battery (+) terminal and terminal (2) to the battery (-)
terminal.
2. Connect a resistance of 1.3k ohm to 5k ohm (1.4W or
more) between terminals (1) and (3).
NOTE:
Be extremely careful not to connect the battery (+) terminal
to the terminal (3)
This may damage the vehicle speed sensor.
3. Rotate the shaft of the vehicle speed sensor slowly and
measure the voltage at both ends with a digital tester.
Replace the sensor when the result of inspection is found
abnormal.
INPUT AND OUTPUT REVOLUTION
SENSOR INSPECTION
Use an ohmmeter to measure the resistance between
terminals 1 and 2.
The voltage, with one rotation of shaft, fluctuates four
times in the following range: 10 to 14V
⇔
2V or less.
Standard resistance
560 – 680
Ω
(20
°
C)
610 – 740
Ω
(40
°
C)
7A–78
AUTOMATIC TRANSMISSION (AW30-40LE)
F07RY00019
225RY00001
220RY00001
244RX00001
PATTERN SELECT SWITCH INSPECTION
Inspect that there is continuity between each terminals.
OVERDRIVE OFF SWITCH INSPECTION
Inspect that there is continuity between terminals 2 and 4.
SOLENOID INSPECTION
1. Resistance check
• Using an ohmmeter, check the resistance between each
terminals (S1/S2/SL) and body.
• Using an ohmmeter, check the resistance between
terminals (STH) and (STHG).
NOTE:
If the pressure contorl solenoid resistance is not within
specification, replace the valve body assembly.
2. Operation Check
Check the solenoid operation by blowing into an oil hole as
shown in the figure.
Solenoid S1 and S2 (Normal close type)
Solenoid S1, S2 and Lock-up
solenoid resistance
11 - 15
Ω
(20
°
C)
12 - 16
Ω
(40
°
C)
Pressure control solenoid
resistance
5 - 5.6
Ω
(20
°
C)
5.4 - 6.1
Ω
(40
°
C)
When battery terminal is
disconnected
No air leaks
When battery terminal is
connected
Air passes through
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–79
244RY00005
101RY00004
249RW003
242RW013
Look-up solenoid (Normal open type)
THROTTLE POSITION SENSOR
INSPECTION
1. Turn the starter switch to the "ON" position.
2. Measure the voltage between throttle position sensor
connector terminals 2 (output) and 3 (ground).
NOTE:
• Do not remove the sensor connector.
• Make sure that power source (4.75-5.25V) is measured
between terminals 1 and 3 before measurement at step
2).
ATF TEMPERATURE SENSOR
INSPECTION
1. Disconnect the front side ATF cooler pipe from the elbow
and remove the elbow.
2. Remove the ATF temperature sensor from the transmission
case.
3. Place the ATF temperature sensor in a container of ATF.
4. Measure the resistance between each terminals.
5. If either of the measured values exceeds the specified,
replace the ATF temperature sensor.
N
·
m (kg
·
m/ lb
·
ft)
When battery terminal is
disconnected
Air passes through
When battery terminal is
connected
No air leaks
Throttle position
Voltage (V)
Idle
0.25-0.45
WOT
3.74-4.56
Resistance
0.5 - 30 k
Ω
(0
°
C - 120
°
C)
Torque
15 (1.5/11)
7A–80
AUTOMATIC TRANSMISSION (AW30-40LE)
256RY00001
256RW012
256RW013
SELECTOR LEVER
INSPECTION
1. Make sure that when the selector 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.
REMOVAL
Preparation:
Diconnect negative (–) battery cable.
1. Transfer Control Lever Knob
2. Front Console
Disconnect wiring harness connectors.
3. Selector Lever Assembly
1) Disconnect shift lock cable from the selector lever
assembly side.
2) Disconnect wiring harness connectors.
3) Disconnect shift control rod from the selector lever
assembly side.
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