2002 ISUZU AXIOM battery

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Page 1632 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A±48
AUTOMATIC TRANSMISSION (4L30±E)
Solenoid (Adapter Case Valve Body)
Removal
1. Raise the vehicle and support it on jack stands.
2. Disconnect battery ground cable.
3. Drain fluid.
4. Remove ad

Page 1633 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A±49 AUTOMATIC TRANSMISSION (4L30±E)
Valve Body Assembly (Main Case)
Removal
1. Raise the vehicle and support it on jack stands.
2. Disconnect battery ground cable.
3. Remove transfer protector (4y

7A±49 AUTOMATIC TRANSMISSION (4L30±E)
Valve Body Assembly (Main Case)
Removal
1. Raise the vehicle and support it on jack stands.
2. Disconnect battery ground cable.
3. Remove transfer protector (4y4).
4. Drain fluid.
5. Support transfer case with a jack and remove third
crossmember.
6. Remove sixteen 10 mm screws, main case oil pan,
magnet and gasket.
7. Remove three 13 mm oil filter fixing screws, then
remove oil filter.
8. Remove two 13 mm manual detent fixing screws,
then remove roller and spring assembly.
9. Disconnect wiring harness from band control
solenoid and shift solenoids. Pull only on connectors,
not on wiring harness.
10. Remove four 13 mm servo cover fixing screws, then
remove servo cover and gasket.
11. Remove seven 13 mm valve body fixing screws.
12. Remove main case valve body with manual valve link
and transfer plate. Note the position of the link (long
end into valve, short end into range selector lever).
13. Remove transfer plate gasket from main case.
14. Remove two check balls from main case.
Installation
1. Install two check balls to main case.
244RW002
2. Inspect electrical 7 way connector and seal of main
case. Replace if necessary.
3. Use two J±25025±B guide pin to install main case.
Install valve body assembly and manual valve link.
NOTE: Valve must be extended as the short end of
manual valve link is connected to the range selector lever.
Long end of link goes into valve.4. Install seven 13 mm screws, and tighten them to the
specified torque.
Torque: 20 Nwm (15 lb ft)
243RS008
5. Remove two guide pins from main case.
6. Install servo cover gasket, cover, and four 13 mm
screws. Tighten the screws to the specified torque.
Torque: 25 Nwm (18 lb ft)
7. Connect wiring harness to band control and shift
solenoids.
8. Install roller and spring assembly to manual detent.
Install two 13 mm screws, and tighten them to the
specified torque.
Torque: 20 Nwm (15 lb ft)
9. Install oil filter and three 13 mm screws. Tighten the
screws to the specified torque.
Torque : 20 Nwm (15 lb ft)
10. Install oil pan gasket, magnet, oil pan and sixteen 10
mm screws. Tighten the screws to the specified
torque.
Torque: 11 Nwm (96 lb in)
11. Install third crossmember and rear mount. Tighten the
bolts and nuts to the specified torque.
Torque
Third crossmember bolt: 116 Nwm (85 lb ft)
Rear mount nut: 50 Nwm (37 lb ft)
12. Install transfer protector. Tighten the bolts to the
specified torque (4y4).
Torque: 37 Nwm (27 lb ft)
13. Fill transmission through overfill screw hole of oil pan,
using ATF DEXRON)±III. Refer to
Changing
Transmission Fluid in this section.
14. Connect battery ground cable.

Page 1634 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A±50
AUTOMATIC TRANSMISSION (4L30±E)
Valve Body Assembly (Adapter Case)
Removal
1. Raise the vehicle and support it on jack stands.
2. Disconnect battery ground cable.
3. Drain fluid.
4. Remove twe

Page 1635 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A±51 AUTOMATIC TRANSMISSION (4L30±E)
Speed Sensor (Extension Assembly)
Removal
1. Raise the vehicle and support on jack stands.
2. Disconnect battery ground cable.
3. Disconnect speed sensor harne

Page 1636 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A±52
AUTOMATIC TRANSMISSION (4L30±E)
Transmission Oil Temperature Sensor (Main Case)
Removal
1. Raise the vehicle and support it on jack stands.
2. Disconnect battery ground cable.
3. Drain fluid.

Page 1699 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±12
TRANSMISSION CONTROL SYSTEM (4L30±E)
ªCheck Transº Check
1. Indicator is ON during 2~3 seconds at ignition (or
when the engine is cranked) but it is OFF after the
engine starts. The indicat

Page 1708 of 2100

ISUZU AXIOM 2002 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±21
810RT022
PIN 1 ± DIAG. SW
PIN 2 ± J1850 Bus + L line on 2±wire systems, or
single wire (Class 2)
PIN 3 ± Active suspension diagnostic enable
PIN 4 ± C

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±21
810RT022
PIN 1 ± DIAG. SW
PIN 2 ± J1850 Bus + L line on 2±wire systems, or
single wire (Class 2)
PIN 3 ± Active suspension diagnostic enable
PIN 4 ± Chassis ground pin
PIN 5 ± Signal ground pin
PIN 6 ± (Not used)
PIN 7 ± TOD diagnostic enable
PIN 8 ± TOD diagnostic enable
PIN 9 ± Primary UART
PIN 10 ± (Not used)
PIN 11 ± (Not used)
PIN 12 ± ABS diagnostic or CCM diagnostic enable
PIN 13 ± SIR diagnostic enable
PIN 14 ± (Not used)
PIN 15 ± (Not used)
PIN 16 ± Battery power from vehicle unswitched (4
AMP MAX.)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) looks the same as
the MIL you are already familiar with (ªCHECK ENGINEº
lamp). However, OBD II requires for it illuminate under a
strict set of guidelines. Basically, the MIL is turned on
when the PCM detects a DTC that will impact the vehicle's
emissions.
The MIL is under the control of the Diagnostic Executive.
The MIL will be turned on if a component or system which
has an impact on vehicle emissions indicates a
malfunction or fails to pass an emissions±related
diagnostic test. It will stay on until the system or
component passes the same test, for three consecutive
trips, with no emissions±related faults.
DTC Types
Each DTC is directly related to a diagnostic test. The
Diagnostic Management System sets DTC based on the
failure of the tests during a trip or trips. Certain tests must
fail two (2) consecutive trips before the DTC is set. The
following are the four (4) types of DTCs and the
characteristics of those codes:
Type A
Emissions related
Requests illumination of the MIL of the first trip with a
fail
Stores a History DTC on the first trip with a fail
Stores a Freeze Frame (if empty) (DTC Information
for 6VE1 engine)
Stores a Fail Record
Updates the Fail Record each time the diagnostic
test fails
Type B
Emissions related
ªArmedº after one (1) trip with a fail
ªDisarmedº after one (1) trip with a pass
Requests illumination of the MIL on the
second
consecutive trip
with a fail
Stores a History DTC on the second consecutive trip
with a fail (The DTC will be armed after the first fail)
Stores a Freeze Frame on the second consecutive
trip with a fail (if empty) (DTC Information for 6VE1
engine)
Stores a Fail Record when the first test fails (not
dependent on
consecutive trip fails)
Updates the Fail Record each time the diagnostic
test fails
(Some special conditions apply to misfire and fuel trim
DTCs)
Type C (if the vehicle is so equipped)
Non-Emissions related
Requests illumination of the Service Lamp or the
service message on the Drive Information Center
(DIC) on the
first trip with a fail
Stores a History DTC on the
first trip with a fail

Does not store a Freeze Frame
Stores Fail Record when test fails
Updates the Fail Record each time the diagnostic
test fails
Type D
Non-Emissions related
Not request illumination of any lamp
Stores a History DTC on the
first trip with a fail

Does not store a Freeze Frame
Stores Fail Record when test fails
Updates the Fail Record each time the diagnostic
test fails

Page 1709 of 2100

ISUZU AXIOM 2002 Service Repair Manual 7A1±22
TRANSMISSION CONTROL SYSTEM (4L30±E)
IMPORTANT:Only four Fail Records can be stored.
Each Fail Record is for a different DTC. It is possible that
there will not be Fail Records for every DTC

7A1±22
TRANSMISSION CONTROL SYSTEM (4L30±E)
IMPORTANT:Only four Fail Records can be stored.
Each Fail Record is for a different DTC. It is possible that
there will not be Fail Records for every DTC if multiple
DTCs are set.
Clear DTC
NOTE: If you clear the DTC (Diagnostic Trouble Codes)
you will not be able to read any codes recorded during the
last occurrence.
NOTE: To use the DTC again to identify a problem, you
will need to reproduce the fault or the problem. This may
require a new test drive or just turning the ignition on (this
depends on the nature of the fault).
1. If you have a Tech 2:
1. Connect the Tech 2 if it is still not connected GO
THROUGH Tech 2 OBD II CONNECTION.
2. Push ªF1: Clear DTC Informationº in the
Application Menu and answer ªYesº to the
question ªDo you want to clear DTC's?º
a. When a malfunction still exists and the Tech 2
displays ª4L30E CODES NOT CLEAREDº. This
means that the problem is still there or that the
recovery was not done. Please GO TO DTC
CHECK.
b. When a malfunction has been repaired and the
recovery is done. The Tech 2 displays ª4L30E
CODES CLEAREDº.
2. If you have no Tech 2:
Disconnect the PCM battery feed as necessary.
DTC Check
1. Diagnostic Trouble Codes (DTC) have been identified
by Tech 2.
2. You have written the list of the DTCs. The order of the
malfunctions has no meanings for this PCM. Usually
only one or two malfunctions should be set for a given
problem.
3. Check directly the DTCs you identified. The DTCs are
sorted by number. Refer to
Diagnostic Trouble Code
(DTC) Identification in this section.
PCM Precaution
The PCM can be damaged by:
1. Electrostatic discharge
2. The short circuit of some terminals to voltage or to
ground.
Electrostatic Discharge Damage Description:
1. Electronic components used to control systems are
often designed to carry very low voltage, and are very
susceptible to damage caused by electrostatic
discharge. It is possible for less than 100 volts of
static electricity to cause damage to some electronic
components. By comparison, it takes as much as
4,000 volts for a person to even feel the zap of a static
discharge.2. There are several ways for a person to become
statically charged. The most common methods of
charging are by friction and induction. An example of
charging by friction is a person sliding across a car
seat, in which a charge of as much as 25,000 volts
can build up. Charging by induction occurs when a
person with well insulated shoes stands near a highly
charged object and momentarily touches ground.
Charges for the same polarity are drained off, leaving
the person highly charged with the opposite polarity.
Static charges of either type can cause damage,
therefore, it is important to use care when handling
and testing electronic components.
NOTICE: To prevent possible electrostatic
discharge damage:
1. Do not touch the PCM connector pins or soldered
components on the PCM circuit board.
2. Be sure to follow the guidelines listed below if
servicing any of these electronic components:
3. Do not open the replacement part package until it is
time to install the part.
4. Avoid touching electrical terminals of the part.
5. Before removing the part from its package, ground
the package to a known good ground on the vehicle.
6. Always touch a known good ground before handling
the part. This step should be repeated before
installing the part if the part has been handled while
sliding across the seat, while sitting down from a
standing position or while walking some distance.
Information On PCM
1. The Powertrain Control Module (PCM) is located in
the center console and is the control center of the
electronic transmission control system.
2. The PCM must be maintained at a temperature below
85 (185F) at all times. This is most essential if the
vehicle is put through a paint baking process. The
PCM will become inoperative if its temperature
exceeds 85C (185F). Therefore, it is
recommended that the PCM be removed or that
temporary insulation be placed around the PCM
during the time the vehicle is in a paint oven or other
high temperature process.
3. The PCM is designed to process the various inputs
and then respond by sending the appropriate
electrical signals to control transmission upshift,
downshift, shift feel and torque converter clutch
engagement.
4. The PCM constantly interprets information from the
various sensors, and controls the systems that affect
transmission and vehicle performance. By analyzing
operational problems, the PCM is able to perform a
diagnostic function by displaying DTC(s) and aid the
technician in making repairs.

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