Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 21

4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS

6E–79

form of bar graph.

7. Upon finishing the data transfer, turn off the power

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  “F: Service Programming System” on the

main screen and then choose “Fl: Programming”.

7. While data is being transferred,  “Downloading” will

be displayed on the Tech-2 screen.

8. Upon finishing the data transfer, Tech-2 will display

“Reprogramming Successful”. Push the “Exit” button
to bring program to completion.

9. Following  “Procedure 2: Demand of Data”, try over

again “Information Obtaining” and check to confirm
if the data has been correctly re-loaded.

10. Upon finishing confirmation, turn off the ignition of

the vehicle and then turn off the power of Tech-2,
removing from the vehicle. 

6E–80

4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS

HOW TO USE BREAKER BOX

The engine control module (ECM) and other connectors
have water proof connector and special terminal. Water
proof terminal does not allow to use back prove. In
addition, the engine control module (ECM) special
terminal can not let regular digital voltage meter prove to
access, because terminal shape is very fin pin type.
In order to prevent damage of female terminal and
connector itself, the breaker box and adapter is the most
suitable special tool.

3

1

2

(1) Engine Control Module (ECM)
(2) Harness Adapter

(3) Breaker Box

4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS

6E–81

Breaker Box Connection Type A 

Breaker box connection type A, check for “open circuit”
and “short to ground circuit”.

4

3

2

5

1

(1) Engine Control Module (ECM)
(2) Harness Adapter
(3) Breaker Box

(4) Digital Voltage Meter
(5) ECM - Harness Adapter Disconnection

6E–82

4JA1-TC/4JH1-TC ENGINE DRIVEABILITY AND EMISSIONS

Breaker Box Connection Type B

Breaker box connection type B, check for “short to
power supply circuit” and “power, signal voltage check”
between the engine control module (ECM) and
electrical components.

4

3

5

2

1

(1) Engine Control Module (ECM)
(2) Harness Adapter
(3) Breaker Box

(4) Digital Voltage Meter
(5) ECM - Harness Adapter Connection