2004 ISUZU TF SERIES display

11A-28 IMMOBILIZER SYSTEM

7.
See the display of programming result.

Tech-2 displays the result of programming as the
following.

Follow those instructions


Selected Programming is not possible due to
wrong System Status!


Immobilizer Not Programmed!


Immobilizer Already Programmed!

ECM Not Programmed!

ECM Already Programmed!
8.
Transponder key must be reprogrammed,
because all transponder information is erased.

When ICU is programmed. See Transponde
r
programming.
Programming ICU and ECM
1.
Follow Programming Immobilizer Function steps 1
through 14.
2.
Input a program option, by moving the cursor on
the selection, then pres "Enter" key.

060R200283
3.
Enter the security code.





4.
Input the security code, then press the soft key o
f
"Okay" or "Not Okay".

060R200284

5.
Input the security code.
6.
Enter VIN.
7.
Enter Key No.
8.
Select an engine system.

See programming result display and follow
instructions of the display.
9.
Transponder key must be reprogrammed,
because all transponder information on ICU is
erased when ICU is programmed. See
Transponder programming.
10.
Follow Programming ECM steps 2 through 8.
Transponder program
1.
Select "Body" and "Immobilizer".
2.
Select "Programming" and "Program Transponder-
Keys".

(Follow Programming Immobilizer Function steps 1
through 14.)
3.
See immobilizer status on Tech-2 screen, and
enter security code. If the status does not allow the
programming, only immobilizer status is displayed.

IMMOBILIZER SYSTEM 11A-29

4.
Insert Non-programmed Transponder-key and
press soft key of "Confirm".

060R200288

5.
"Turn On ignition key", is displayed if the ignition is
off.
6.
The transponder status is displayed if the status
does not allow the programming.
7.
When programming starts "Programming
Transponder - key!" is displayed.
8.
Turn off Ignition key.
9.
Turn On Ignition key.
10.
If the programming was not successful, the
transponder status is only displayed.
11.
To program more illustration press soft key.

RUW38SH000601

12.
See programming result.

11A-34 IMMOBILIZER SYSTEM

IMMOBILIZER SYSTEM CHECK
Step Action Value(s) Yes No
1 1. Key position is "ON," engine "OFF."
2. Observe the check engine lamp.
Note: When a key switch is turned ON, check engine
lamp will turn on and a check engine lamp will be
turned off after a few seconds.
Is the check engine lamp "ON"? 
Go to Step 2
Go to "No
Immobilizer
warning lamp"
2 1. Key position is "ON," engine "OFF."
2. Observe the check engine lamp.
Note: When a key switch is turned ON, check engine
lamp will turn on and a check engine lamp will be
turned off after a few seconds.
Is the check engine lamp "OFF"?
(Check engine lamp does not flash) 
Go to Step 3
Go to
"Immobilizer
warning lamp on
steady"
3 1. Key position is "OFF."
2. Install a scan tool.
3. Key position is "ON."
4. Attempt to display immobilizer data with the scan
tool.
Does the scan tool display immobilizer data? 
Go to Step 9
Go to Step 4
4 1. Key position is "OFF," disconnect the immobilizer
control unit (ICU).
2. Check the DLC (Data Link Connector) circuit for
an open, short to ground, or short to voltage.
Also, check the DLC ignition feed circuit for an
open or short to ground and the DLC ground
circuit for an open.
Was a problem found? 
Go to Step 5
Go to Step 6
5 Repair or replace the DLC (Data Link Connector)
circuit.
Was the action complete? 
Go to Step 3 
6
1. Check the ICU circuit for an open, short to ground,
or short to voltage. Also, check the ICU ignition
feed circuit for an open or short to ground and the
ICU ground circuit for an open.
2. If a problem is found, repair as necessary.
Was a problem found? 
Go to Step 7
Go to Step 8
7 Repair or replace the ICU ignition feed and ground
circuits.
Was the action complete? 
Go to Step 3 
8 Replace the immobilizer control unit (ICU).
IMPORTANT:
The replacement ICU must be
programmed the immobilizer data by the scan tool.
Was the action complete? 
Go to Step 3 
9 Select "Display DTCs" with the scan tool.
Are any DTCs stored? 
Go to Step 10
Go to Step 13

IMMOBILIZER SYSTEM 11A-35

Step Action Value(s) Yes No
10 Review and record for scan tool Failure Records data
and DTCs.
Was the action complete? 
Go to Step 11 
11 Following the DTC is stored.
Are there DTC B0001 or B0055 stored?
Go to applicable
DTC table after
Go to Step 12 Go to Step 12
12 Clear the DTCs by "Clear the Information "with scan
tool.
Did the DTCs Cleared? 
Go to Step 12 
13 Select "Display DTCs" with the scan tool.
Are any DTCs stored? 
Go to applicable
DTC table Go to Step 14
14 1. Key position is "ON," engine "OFF."
2. Observe the check engine lamp.
Note: If a key switch is turned ON, check engine lamp
will turn on and a check engine lamp will be turned off
after a few seconds.
Is the check engine lamp "flash"? 
Go to Step 15
Go to Step 20
15 Check the engine control system.
If a problem is found, repair as necessary.
(Refer to section 6E: system check and DTCs)
IMPORTANT:
The replacement ECM must be
programmed the immobilizer data by scan tool.
(Except 4JA1-L Engine)
Was the action complete? 
Go to Step 16 
16 Check the key.
Is a key peculiar to a vehicle? 
Go to Step 18
Go to Step 17
17 Change into a peculiar key.
IMPORTANT:
If replace the key,
after replace lock
cylinders, perform the following below the items.

Replace the keys and key cylinders.

Program the immobilizer system.
(Refer to "Important information on Programming")
Was the action complete? 
Go to Step 18 
18 Check the immobilizer programming functions.


Immobilizer control unit (ICU).


Engine control module (ECM).


Transponder (Key).
If a problem is found, repair as necessary.
(Refer to "Important information on Programming")
Was the action complete? 
Go to Step 19

19 Operate the DTCs by "Clear the Information" with
scan tool.
Was the action complete? 
Go to Step 20 
20 Attempt to start the engine.
Did the engine start? 
System OK
Refer to
Diagnostic Aids

11B – 2 ANTITHEFT SYSTEM
Pin-outs ......................................................................................................................11B – 21
Pin- Assignment ........................................................................................................ 11B – 22
lmportant information on Programming .................................................................... 11B – 23
Security code ............................................................................................................. 11B – 23
Entering a code ......................................................................................................... 11B – 23
Tech-2 Scan Tool............................................................................................................ 11B – 24
Tech-2 Features ......................................................................................................... 11B – 25
Getting Started ......................................................................................................... 11B – 25
Operating Procedure................................................................................................. 11B – 26
Menu ..........................................................................................................................11B – 27
DTC ............................................................................................................................. 11B – 27
Clear DTC Information .............................................................................................. 11B – 27
Tech-2 Data Display................................................................................................... 11B – 27
Actuator Test ............................................................................................................. 11B – 27
Unlock / Lock Test..................................................................................................... 11B – 27
Arm / Disarm Signal Test ......................................................................................... 11B – 28
Horn Signal Test ........................................................................................................ 11B – 28
Turn Signal Test......................................................................................................... 11B – 28
Theft LED Test ........................................................................................................... 11B – 28
Programming............................................................................................................. 11B – 29
Erase remote keys..................................................................................................... 11B – 29
Program Remote Keys .............................................................................................. 11B – 30
ProgramAntitheft Waring......................................................................................... 11B – 31
Program Country Code ............................................................................................. 11B – 32
Program Vehicle Options.............................................................................................. 11B – 33
Tech-2 Data List ......................................................................................................... 11B – 34
DIAGNOSIS .................................................................................................................... 11B – 35
Diagnostic procedure................................................................................................ 11B – 35
Clearing Diagnostic Trouble Codes ......................................................................... 11B – 35
Verifying Vehicle Repair............................................................................................ 11B – 35
Diagnostic Aids ......................................................................................................... 11B – 35
Check the condition for system parts ..................................................................... 11B – 35
Check the Electro-Magnetic Interference (EMI) ..................................................... 11B – 35
Check the other items .............................................................................................. 11B – 35
Check the operation.................................................................................................. 11B – 35
Diagnostic Trouble Code (DTC) list.......................................................................... 11B – 36
Antitheft System Check ........................................................................................... 11B – 37
No Antitheft Lamp .................................................................................................... 11B – 38
DTC13 Security code not yet programmed ............................................................ 11B – 39
DTC14 No remote key programmed ....................................................................... 11B – 40
DTC16 Door lock actuators short circuit to ground ............................................... 11B – 41

ANTITHEFT SYSTEM 11B – 25
Tech-2 Features
1. Tech-2 is a 12volt system. Do not apply 24
volts.
2. After connecting and/or installing the vehicle
communication interface (VCI) module, PCMCIA
card and data link connector (DLC) to the Tech-
2, connect the tool to the vehicle DLC.
3. Make sure the tech-2 is OFF when removing or
installing the PCMCIA card.
4. The Tech-2 has the capability of two or three
snapshot.
5. The PCMCIA card is sensitive to magnetism and
static electricity, so care should be taken in the
handling of the card.
6. Always return to the Main Menu by pressing
the EXIT key several times before shutting
down.
7. To clear diagnostic trouble codes (DTCs), open
Application Menu and press “Clear DTC”.
Getting Started
Before operating the Isuzu PCMCIA card with the
Tech-2, the following steps must be performed:
1. The Isuzu System PCMCIA card inserts into the
Tech-2.
2. Connect the SAE 16/19 adapter to the DLC
cable.
3. Connect the DLC cable to the Tech-2.
4. Mark sure the vehicle ignition is off.
5. Connect the Tech-2 SAE 16/19 adapter to the
vehicle DLC.
6. Turn the vehicle ignition (key) switch.
7. Power the Tech-2 ON and verify the Tech-2
power up display.
8 7 6 5 4 3 2 1
16 15 14 13 12 11 10 9
060R300015
Press (ENTER) To Continue
060RW009

11B – 26 ANTITHEFT SYSTEM
Operating Procedure
The power up screen is displayed when you power
up the tester with the Isuzu systems PCMCIA card.
Follow the operating procedure below.
Press (ENTER) To Continue
F0 : Diagnostics
F1 : View Capture Data
F2 : Tool Options
F3 : Down load/Up load Help
Vehicle Identification
Select one of the following
Model Year(S)(ENTER)
(F0 ENTER)
(Model year ENTER)
060R100102
(UP) AXIOM
Vehicle Type
Antitheft
F0 : Powertrain
F1 : Chassis
F2 : Body
Vehicle Identification
Select one of the following
Body(F2 ENTER)
(Vehicle Type ENTER)
Vehicle Identification
Select one of the following
System Selection Menu(UB) Trooper
(UE) Rodeo/Amigo
(TF) LUV,Frontier,LAO-RodeoVehicle Type(S)

ANTITHEFT SYSTEM 11B – 37
Antitheft System Check
Step Action Value (s) Yes No
1
2
3
4
5
6
7
8
91. Key position is “ACC”, shut all doors and
bonnet.
2. Observe the antitheft lamp.
Note: When a key switch is “ACC”, antithft
lamp will turn on and a antitheft lamp (LED)
will be flashing after 10 seconds.
Is the antitheft lamp "ON” or flashing?
1. Key position is “ON”, engine “OFF”.
2. Observe the antitheft lamp.
3. Key position is turned “ACC”.
4. Check the antitheft lamp will be turned
flashing and lamp will be turned ACC after 10
seconds.
Is the antitheft lamp flashing?
1. Key position is “OFF”.
2. Install the Tech-2.
3. Key position is “ON” or “OFF”.
4. Attempt to display antitheft data with the
Tech-2.
Does the Tech-2 display antitheft data?
1. Key position is “OFF”, disconnect the
antitheft control unit (ACU).
2. Check the DLC (Data Link Connector) circuit
for an open, short to ground, or short to
voltage.
Also, check the DLC ignition feed circuit for an
open or short to ground and the DLC ground
circuit for an open.
Was a problem found?
Repair or replace the DLC (Data Link Connector)
circuit.
Was the action complete?
1. Check the ACU ground circuit for an open, or
short to voltage. Also, check the ACU ignition
feed circuit for an open or short to ground
and the ACU ground circuit for an open.
2. If a problem is found, repair as necessary.
Was the problem found?
Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the antitheft data by Tech-2.
Was the action complete?
Select “Display DTCs” with the Tech-2.
Are any DTCs stored?
1. Observe the antitheft data list on Tech-2.
2. If a problem is found, repair as necessary.
Was the problem found?—
—
—
—
—
—
—
—
—Go to Step 2
Go to
DTC table
Go to Step 9
Go to Step 5
Go to Step 3
Verfy repair
Go to Step 8
Go to applicable
DTC table
System OKGo to
“No antitheft
lamp”
Go to Step 3
Go to Step 4
Go to Step 6
—
Go to Step 7
—
—
Go to
applicable
section