2004 ISUZU TF SERIES service

6E-74 3.5L ENGINE DRIVEABILITY AND EMISSIONS








0.4 Sec 0.4 Sec
.

ON

OFF




3.2 Sec.

1.2 Sec.



3.2 Sec.


0.4 Sec 0.4 Sec
.
ON

OFF


3.2 Sec.

1.2 Sec.


3.2 Sec.



Self-diagnosis Start

Normal Code (12)
Trouble Code (32)


121212141414323232

In case DTC 14 & 32 are stored

Clearing Diagnostic Trouble Codes
Important: Do not clear DTCs unless directed to do so
by the service information provided for each diagnostic
procedure. When DTCs are cleared, the Freeze Frame
and Failure Record data which may help diagnose an
intermittent fault will also be erased from memory.
If the fault that caused the DTC to be stored into
memory has been corrected, the Diagnostic Executive
will begin to count the “warm-up" cycles with no furthe
r
faults detected, the DTC will automatically be cleared
from the ECM memory.
To clear Diagnostic Trouble Codes (DTCs), use the
Tech 2 “clear DTCs" or “clear information" function.
When clearing DTCs follow instructions supplied by the
Tech 2 manufacturer.
When a Tech 2 is not available, DTCs can also be
cleared by disconnecting one of the following sources
for at least thirty (30) seconds.
To prevent system damage, the ignition key must be
“OFF" when disconnecting or reconnecting battery
power.

The power source to the control module. Examples:
fuse, pigtail at battery ECM connectors etc.

The negative battery cable. (Disconnecting the
negative battery cable will result in the loss of othe
r
on-board memory data, such as preset radio tuning).
On-Board Diagnosis (Self-Diagnosis)
1. The Engine Control Module (ECM) conducts a
self-test of most of the wiring and components in
the system each time the key is turned to ON, and
can detect faults in the system while the key is ON.
If a fault is detected, the ECM will store a trouble
code in memory and flash the CHECK ENGINE
indicator to alert the driver.
2. The Diagnostic Trouble Codes (DTC) can be
displayed by shorting together terminals and the
Data Link Connector (DLC) located belo
w
Instrument Panel of drivers side.
The CHECK ENGINE indicator will flash DTC 12
three times, followed by any DTC.If several DTC are
stored, each DTC will be displayed three times. The
DTC will be displayed in numerical order. The DTC
display will continue as long as the DLC is shorted.
Some DTC can cause other DTC to be stored, It is
important to diagnose and repair the lowes
t
numbered DTC first before going on to the highe
r
numbered DTC.

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E -91
SERVICE PROGRAMMING SYSTEM (SPS)
The procedure to program the control unit by using the
Service Programming System (SPS) software
contained in TIS2000 is explained below.
NOTE:






If the Engine Control Module (ECM) was
programmed, the Immobilizer System must be
linked to the ECM: Refer to section 11
"Immobilizer System-ECM replacement" for the
ECM/Immobilizer linking procedure.







Should Tech2 display "SPS Procedure was not
successful", engine will not start, but no DTCs
are present, low battery voltage or poo
r
electrical connections should be the primary
suspects. Perform the SPS procedure again
after rectifying the fault/s.


IMPORTANT:
Perform the following checks before attempting to
program the control unit:







The Tech2 PCMCIA card is programmed with
the latest software release.







The latest release of TIS2000 is loaded on the
PC.







The vehicle battery is fully charged.







The control unit to be programmed is
connected to the vehicle.
1. Preparations of TIS 2000
1.
Connect Tech 2 to P/C.
2.
Check to see if Hardware Key is plugged into Port.
3.
Activate TIS 2000 by P/C.
4.
On the activating screen of TIS2000, choose
"Service Programming System"




5.
On the screen of "Diagnostic Tester and
Processing Program Selection", choose the one
that will comply with the following.


Diagnostic Tech 2 in use


New programming by the existing module or new
programming by the replaced/new module.


Fixing position of the control unit.
6.
Upon completion of the selection, push the button
of "Next".

6E-92 3.5L ENGINE DRIVEABILITY AND EMISSIONS

2.Demand of Data
1.
Connect Tech-2 to the vehicle. When activated b
y
turning on the power of Tech-2, push the "Enter"
switch.
2.
Turn on the ignition switch (without starting the
engine)
3.
In the main menu of Tech 2, push "F1: Service
Programming System (SPS)".
4.
Push "F0: Request Info" of Tech-2.

5.
Where vehicle data has been already saved in
Tech-2, the existing data come on display. In this
instance, as Tech-2 starts asking whether to keep
the data or to continue obtaining anew data from
the control unit, choose either of them.





6.
If you select “continue”, you have to select “Model
Year”, “Vehicle Type”.
7.
After that. then push button and turn Ignition switch
tuned on, off, on following Tech-2 display. Tech-2
will read information from controller after this
procedure.
8.
During obtaining information, Tech-2 is receiving
information from the control unit ECM and TCM
(A/T only) at the same time. With VIN not being
programmed into the new control unit at the time
of shipment, "obtaining information" is not
complete (because the vehicle model, engine
model and model year are specified from VIN). Fo
r
the procedure get additional information on
vehicles, instruction will be provided in dialog form,
when TIS2000 is in operation.
9.
Following instructions by Tech-2, push the "Exit"
switch of Tech-2, turn off the ignition of the vehicle
and turn off the power of Tech-2, thereby removing
from the vehicle.


3.Data Exchange
1.
Connect Tech-2 to P/C, turn on the power and
click the "Next" button of P/C.
2. Check VIN of the vehicle and choose "Next".
3. Select “System Type” for required control unit.


Engine (Programming for ECM or PCM)


Transmission (Programming for TCM)
4.
When a lack of data is asked from among the
following menu, enter accordingly.

Select following Menu


Model Year


Model


Engine type


Transmission type


Destination code (vehicles for general export)*1


Immobilizer
Etc.
* 1: How to read the destination code
"Destination code can be read from service ID Plate
affixed on vehicles, while on service ID plate the
destination code is described at the right-hand edge o
f
Body Type line. In the figure, the destination code can
be read as "RR3" (Australia).

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E -93





5.
After choosing the data, click the "Next" button.
6.
When all the necessary information is entered, the
"details" of software within the database that
match the entered data will appear fo
r
confirmation. Click the "Program" switch and then
download the new software onto Tech-2.
7. "Data Transfer" comes on display. The progress o
f
downloading will be displayed on the screen in the
form of bar graph.
8.
Upon finishing the data transfer, turn off the powe
r
of Tech-2, removing from P/C.


4. Programming of ECM
1.
Check to see if batteries are fully charged, while
ABS connectors shall be removed from the
vehicle.
2.
Connect Tech-2 to Vehicle Diagnostic Connectors.
3.
Turn on the power of Tech-2 and the title screen
comes on display.
4.
Turn on the ignition (without allowing the engine to
start)
5.
On the title screen of Tech-2, push the "Enter"
button.
6.
Choose "F1: Service Programming System" on the
main screen and then choose "F1: Program ECU".
7.
While data is being transferred, "Programing in
Progress" will be displayed on the Tech-2 screen.
8.
Upon finishing the data transfer, Tech-2 will
display "Reprogramming was Successful". Push
the "Exit" button to bring program to completion.















9.
Following "Procedure 2: Demand of Data", try ove
r
again "Information Obtaining" and check to confirm
if the data has been correctly re-loaded.
10. Upon finishing confirmation, turn off the ignition o
f
the vehicle and then turn off the power of Tech-2,
removing from the vehicle.

6E-100 3.5L ENGINE DRIVEABILITY AND EMISSIONS

Step Action Value (s) Yes No
11
Using the DVM and check the data link connector
communication circuit.
1. Ignition "Off", engine "Off".
2. Disconnect the ECM connector.
3. Check the circuit for open or short to ground circuit.
Was the problem found?






E-61(B)
B-58



-
Repair faulty
harness and
verify repair
Go to Step 12
12
Is the ECM programmed with the latest software
release?
If not, download the latest software to the ECM using
the "SPS (Service Programming System)"
.
Was the problem solved?
-
Verify repair
Go to Step 13
13
Replace the ECM.
Is the action complete?
IMPORTANT:
The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual. Following
ECM programming, the Immobilizer system (if
equipped) must be linked to the ECM. Refer to section
11 “Immobilizer System-ECM replacement”
for the
ECM/Immobilizer linking procedure.
-
Verify repair
-

6E-102 3.5L ENGINE DRIVEABILITY AND EMISSIONS

No Check Engine Lamp (MIL)

Step
Action Value (s) Yes No
1
Check the meter fuse (15A). If the fuse is burnt out,
repair as necessary.
Was the problem found?
- Verify repair Go to Step 2

2
Using the DVM and check the "CHECK ENGINE"
lamp circuit.
1. Ignition "Off", engine "Off".
2. Disconnect the ECM connector.
3. Ignition "On".
4. Check the circuit for open circuit.
Was the DVM indicated specified value?
V
E-61(B)



10 – 14.5V
Go to Step 5

Go to Step 3

3
Check the "CHECK ENGINE" lamp bulb. If the bulb is
burnt out, repair as necessary.
Was the problem found?
- Verify repair Go to Step 4

4
Using the DVM and check the "CHECK ENGINE"
lamp circuit.
1. Ignition "Off", engine "Off".
2. Disconnect the meter connector and ECM
connector.
3. Check the circuit for open circuit.
Was the problem found?




E-61(B)
B-24


-
Verify repair
Go to Step 5

5
Is the ECM programmed with the latest software
release?
If not, download the latest software to the ECM using
the "SPS (Service Programming System)"
.
Was the problem solved?
-
Verify repair
Go to Step 6

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E -103

Step
Action Value (s) Yes No
6
Replace the ECM.
Is the action complete?
IMPORTANT:
The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual. Following
ECM programming, the Immobilizer system (if
equipped) must be linked to the ECM. Refer to section
11 “Immobilizer System-ECM replacement”
for the
ECM/Immobilizer linking procedure.
-
Verify repair
-

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E -105

Check Engine Lamp (MIL) “ON" Steady

Step Action Value (s) Yes No
1
1. Ignition "Off", engine "Off".
2. Disconnect the ECM connector.
3. Ignition "On".
Was the "CHECK ENGINE" lamp turned on?
- Go to Step 2
Go to Step 4

2
Using the DVM and check the "CHECK ENGINE"
lamp circuit.
1. Ignition "Off", engine "Off".
2. Disconnect the meter connector and ECM
connector.
3. Check the circuit for short to ground circuit.
Was the problem found?


B-24



E-61(B)


- Verify repair Go to Step 3

3
Replace the meter assembly.
Is the action complete?
- Verify repair -
4
Is the ECM programmed with the latest software
release?
If not, download the latest software to the ECM using
the "SPS (Service Programming System)"
.
Was the problem solved?
-
Verify repair
Go to Step 5
5
Replace the ECM.
Is the action complete?
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual. Following
ECM programming, the Immobilizer system (if
equipped) must be linked to the ECM. Refer to section
11 “Immobilizer System-ECM replacement”
for the
ECM/Immobilizer linking procedure.
-
Verify repair
-