2004 ISUZU TF SERIES check engine

7B1-112 MANUAL TRANSMISSION

2) NOISY OPERATION

Checkpoint Trouble Cause Countermeasure

Replenish or replace the gear
oilInsufficient or improper engine
oil NG
Replace the gear(s)
Replace the gear(s)
Replace the bearing(s)
Gears (Gear whining)Lack of backlash between
meshing gears
Free running gears seizing on
the thrust face or the inner
face
Bearings (Hissing, thumping
or bumping)Worn or broken bearing(s)
Gears (Squealing at high
speeds)
Replace the gear(s)Gears (Growling, humming, or
grinding)Worn, chipped, or cracked
gear(s)
NG NG NG NG OK
OK
OK OK
Gear oil (Metallic rattling)

MANUAL TRANSMISSION 7B1-113

2. HARD SHIFTING

Checkpoint Trouble Cause Countermeasure

Change lever play
Clutch pedal free play
Repair or replace the
applicable parts and regrease
Readjust the clutch pedal free
play
Worn change lever sliding
portions
Improper clutch pedal free
play
Change lever operationRepair or regrease the change
lever assembly
Replenish or replace the
engine oil
Hard operating change lever
caused insufficient grease
Insufficient or improper gear
oil
OK
OKNG NG NG NG
OK OKGear oil
Continued on the next page
Shift rod and quadrant box
sliding faces, and other partsReplace the shidt rod and/or
the quadrant boxWorn shift rod and/or sliding
faces
Repair or replace the sleeveSleeve movement failure
NG NG
OKShift block sleeve movement

IMMOBILIZER SYSTEM 11A-1

SECTION 11A
IMMOBILIZER SYSTEM
CONTENTS

Service Precaution.................................................
11A-2
General Description...............................................
11A-3
What happens without proper transponder
operation? ..........................................................
11A-6
No proper transponder is available, what
should be done for the system? ......................
11A-6
Caution to the operation.....................................
11A-6
Summary of operation........................................
11A-6
What your organization should provide for
your customer ....................................................
11A-6
Car Pass .............................................................
11A-6
Security code management ..............................
11A-6
Essential tool (Scan tool : Tech-2) ..................
11A-6
Circuit Diagram .................................................
11A-7
Parts Location.........................................................
11A-10
Immobilizer control unit (ICU); For Electronic
Control Engine (6VE1, C24SE, 4JH1-TC,
4JA1-TC) .......................................................... 11A-11
Pin-outs; For Electronic Control Engine
(6VE1, C24SE, 4JH1-TC, 4JA1-TC)...............
11A-12
Immobilizer control unit (ICU); Mechanical
Control Engine (4JA1-T) .................................. 11A-13
Immobilizer coil (Antenna) ...................................
11A-15
Transponder (Key) ............................................ 11A-15
Immobilizer warning lamp ................................. 11A-15
Engine control module (ECM) .......................... 11A-15
Car Pass Card .................................................. 11A-16
Loss of car pass card.........................................
11A-16
Instructions on Filling Out the form "Data
request, car pass" .............................................
11A-16
Important Instructions ........................................
11A-17
lmportant information on Programming .............
11A-19
Security code ......................................................
11A-19
Entering a code ..................................................
11A-19
Transponder (Key) .............................................
11A-19
Important .............................................................
11A-19
Tech-2 Scan Tool ..................................................
11A-20
Tech-2 Features .................................................
11A-21
Getting Started ...................................................
11A-21
Operating Procedure .........................................
11A-22
Menu ....................................................................
11A-23
DTC ......................................................................
11A-23
Clear DTC Information .......................................
11A-23
Tech-2 Data Display ...........................................
11A-23
Check Vehicle Identification Number (VIN) ....
11A-23
Reset Immobilizer (Reset Immobilizer
Control Unit) .......................................................
11A-23
Reset Engine Control Module (Reset ECM) ...
11A-24
Erase transponder key .......................................
11A-24
Programming Immobilizer Function .................
11A-25
Programming ICU ...............................................
11A-26
Programming ECM .............................................
11A-27
Programming ICU and ECM .............................
11A-28
Transponder program ........................................
11A-28
Data List ...............................................................
11A-30
Diagnostic procedure ............................................
11A-31
Clearing Diagnostic Trouble Codes ....................
11A-31
Verifying Vehicle Repair ........................................
11A-31
Diagnostic Aids ......................................................
11A-31
Check the condition for system parts ..............
11A-31
Check the Electro-Magnetic Interference
(EMI) ....................................................................
11A-31
Check the other items ........................................
11A-31
Check the operation ...........................................
11A-31
Diagnostic Trouble Code (DTC) list ....................
11A-32
IMMOBILIZER SYSTEM CHECK ........................
11A-33
NO IMMOBILIZER WARNING LAMP .................
11A-36
IMMOBILIZER WARNING LAMP ON STEADY 11A-37
B0001 REPLACE ELECTRONIC CONTROL
UNIT (ECU) (IMMOBILIZER FAULT) ................
11A-38
B0002 IMMOBILIZER NOT PROGRAMMED ....
11A-39
B0003 TRANSPONDER KEY PROBLEM ..........
11A-40
B0004 IMMOBILIZER COIL CIRCUIT
(ANTENNA COIL FAULT) ...................................
11A-42
B0005 COMMUNICATION LINE W VOLTAGE
LOW .......................................................................
11A-43
B0006 COMMUNICATION LINE W VOLTAGE
HIGH .......................................................................
11A-44
B0007 NO ENGINE REQUEST RECEIVED ......
11A-45
B0008 WRONG TRANSPONDER KEY .............
11A-47
B0009 NO TRANSPONDER KEY
PROGRAMMED ...................................................
11A-48

IMMOBILIZER SYSTEM 11A-3

General Description
The immobilizer system consists of the four major
components which are Engine Control Module (ECM),
Immobilizer Control Unit (lCU), transponder, and scan
tool (Tech-2).
This system can be activated by a correctly programmed
transponder and starter switch is set to OFF.
This system can be deactivated by a correctl
y
programmed transponder key connected with a correctly
programmed ECM and a correctly programmed lCU.
While the system is on :
The starter cut off relay deactivates function of starter,
and the fuel injector power source is deactivated also.


Check Engine lamp is flashing.


Warning buzzer is operating.
(With antitheft system)






Gasoline Engine (6VE1, C24SE)

LTW3BALF000101

11A-6 IMMOBILIZER SYSTEM

What happens without proper transponder
operation?
One of the function of transponder is to deactivate or
activate starter function. lf the proper transponder is not
used, starter cannot be operated. Because starter rela
y
stays off, cranking engine is not possible.
After the starter relay is activated, transponder signal
triggers to let lCU calculate by transponder address
signal and immobilizer algorithm.
When the result matches with necessary condition, it
makes injector power source be activated.
If transponder does not send correct signal, lCU and
ECM do not activate injector system on.
Therefore the vehicle cannot be operated.
No proper transponder is available, what
should be done for the system?
When any proper transponder is not available, a new
transponder should be programmed. Up to 5
transponders can be provided with a scan tool (Tech-2)
and by proper procedure.
In addition to the absence of proper transponder, it ma
y
happen particular secret code to the particular vehicle is
missing. ln this case, the secret code must be provided
by your organization.
Otherwise transponder cannot be programmed in an
y
way.
lf the essential for a scan tool (Tech-2) for programming
and proper software for Tech-2 are not available, there
is no permanent way to fix system. Temporary replace
with new ECM, new ICU and new transponder without
any secret code can make the system be deactivated,
but it does not last long. Such a replacement does not
solve any condition. Even after replacement, the system
is activated automatically in short time and then no
operation of the vehicle can be made in any way.
Tech-2 should be provided in your organization.
Caution to the operation
lf an attempt is made to start the engine while the
immobilizer system is activated, the check engine lamp
flashes and the engine will not start.
Summary of operation
Switch on: Set the ignition and starter switch to OFF.
(Activate)
Switch off: Set the ignition and starter switch to ON b
y
using the transponder key. (Deactivate)

What your organization should provide for
your customer





Car Pass

For a new owner, your dealership must hand Car Pass
card, which has identification numbers of new owner's
vehicle immobilizer system. This information is ver
y
important in case of repair or lost of transponder.
The followings are necessary items provided by you
r
responsibility.
1)
Car pass with identification for a new owner
2)
Blank car pass card when it is for reissue
3)
Instruction to dealers how to use car pass card






Security code management

Your organization must keep security codes for all
vehicles as confidential data. Once the security codes
are lost, anybody who have the security code can
access immobilizer system. Your organization has
responsibility of any missing vehicles caused by stolen
security code.






Essential tool (Scan tool : Tech-2)

Your dealership must have Tech-2, and Tech-2 updated
software for immobilizer system.

11A-12 IMMOBILIZER SYSTEM

Pin-outs; For Electronic Control Engine (6VE1, C24SE, 4JH1-TC, 4JA1-TC)
RUW38HSF000201


No. Pin Function
A-1 Antenna coil positive
A-2


A-3 Antenna coil negative
B-1 Starter Relay (6VE1, C24SE Engine) / Immobilizer Relay (4JH1-TC/4JA1-TC Engine)
B-2 Ground
B-3 Voltage from ignition switch ON
B-4 Back up voltage supply
B-5 To Tech-2
B-6 Vehicle speed sensor (6VE1, C24SE Engine) / Not used (4JH1-TC/4JA1-TC Engine)
B-7 Communication: carry on line from ECM to ICU (Check engine lamp)
B-8 Communication: carry on line from ICU to ECM (Communication line W)

IMMOBILIZER SYSTEM 11A-15

Immobilizer coil (Antenna)
Immobilizer coil is install in order that ICU may check
the security code memorized by the transponder (key).

RUW38HSH000301
Transponder (Key)
Transponder is installed in the inside of a key.
Transponder has memorized the security code of a
immobilizer system.

LTW3BASH000101

Legend


(1) Transponder (Key)



Check engine lamp
Check engine lamp displays failure or a system
operation of a immobilizer system by flash of a lamp.

LTW3BASH000201
Engine control module (ECM)
ECM will stop engine, if it communicates with ICU and
abnormalities are detected by a key and the immobilize
r
system.

LTW3BASH000301

Legend


(1) ECM (6VE1 engine)

(2) ECM (C24SE engine)

(3) ECM (4JH1-TC engine)

IMMOBILIZER SYSTEM 11A-19

lmportant information on Programming
Security code
The security code protects the immobilizer control unit
against unauthorized programming and data access
from Tech-2. The security code consists of a 4 digit
code number and is programmed into the immobilize
r
control unit and Engine Control Module (ECM).
New control units are not programmed with a securit
y
code.
If the control units are replaced, the security code
entered in the car pass, transponder lD, etc.
Must be programmed into the new control unit with
Tech-2.
The security code can only be programmed with Tech-2
once and must therefore be performed with great care.
Once programmed, the security code cannot be
overwritten. An already used immobilizer can be reused
in a different car by initializing the immobilizer. After that
you can program the security code again. For initializing
command you need the current security code.
If the immobilizer control unit is returned, always
enclosed the security code that is allocated to that
control unit. If this is not done, we can not process the
case and the warranty will not be recognized.
Entering a code
If the Tech-2 display requests that the

security code


mechanical key number


Vehicle Identification No.
be entered, process as follows;
To input a digit you need to use the up and down
buttons of the Tech-2. By using the numeric buttons the
according digit will be displayed at the current position
and the cursor will move to the next position.
For letters you need to use the up and down buttons o
f
the Tech-2. The up and down key might be used for
digits as well. By using the up and down buttons the
displayed digit or letter will be increased or decreased.
To move to the next position you need to use the move-
to-right-button.
With the two buttons, move-to-right and move-to-left
you can select the position of number you want to
change.
This will allow you to correct a wrong number.
After the number is completed you need to press the
Enter button to accept the number. Correction is now no
longer possible.
Use the OKAY soft key to program the number and the
NOT OKAY soft key to abort the programming.
Transponder (Key)





If a transponder key is lost:
If a transponder key is lost, all transponder keys in the
immobilizer control system must be erased.
Transponder keys can be ordered via the "Your prope
r
organization name such as part and accessor
y
department" as previously by providing the mechanical
key number.
The mechanical key number is provided on the ca
r
pass.
Thereafter, existing and new transponder keys are
programmed consecutively using Tech-2. The vehicle
can then no longer be started using lost key.





5 transponder keys can be provided:

Each transponder has different Identifications. If a
customer wants more than 2 transponder keys,
maximum 5 transponder keys can be provided b
y
additional programming by Tech-2.






lf a new ignition key with different mechanical key
number needs to be installed:
If installation of an ignition lock with a different
mechanism key number is necessary (an ignition lock
which belongs to the mechanical key number has to be
ordered first), all transponder keys must first be erased
and the two transponder keys which belong to the
ignition lock that is now installed must be programmed.
The new mechanical key number must be programmed
now into the immobilizer. The mechanical key numbe
r
in the car pass is to be changed as well.
Important:
After successful programming, the engine control can
only be used for vehicles with immobilizer and
transponder.
Faults that occur in connection with the immobilize
r
control unit are recognized by the engine control unit
and as long as "IMMOBILOZER" is not programmed,
are indicated by a flashing of the check engine lamp.
If the immobilizer and engine control unit are replaced
at the same time, the immobilizer control unit must be
programmed first before the "IMMOBILIZER" function in
the engine control unit can be activated.