Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 150

6E–204

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

8

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 immobiliser system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobiliser System-ECM replacement” for
the ECM/Immobiliser linking procedure.

—

Verify repair

—

Step

Action

Value(s)

Yes

No

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

6E–205

DIAGNOSTIC TROUBLE CODE (DTC) P0602 ECU PROGRAMMING ERROR

Condition for setting the DTC and action taken when the DTC sets

Circuit Description & Diagnostic Aids

The replacement ECM must be programmed by Service
Programming System (SPS). Because, the service

ECM does not programmed. 
When the service ECM is used without SPS, DTC
P0602 will appear.

Diagnostic Trouble Code (DTC) P0602 ECU Programming Error

Flash 

Code

Code

Symptom 

Code

MIL

DTC Name

DTC Setting Condition

Fail-Safe (Back Up)

-

P0602

-

-

Programming Error

ECM memory area error.

Engine control disabled.

Step

Action

Value(s)

Yes

No

1

Was  the  “On-Board Diagnostic (OBD) System Check”
performed?

—

Go to Step 2

Go to On Board 

Diagnostic 

(OBD) System 

Check

2

1. Connect the Tech 2. 

2. Review and record the failure information. 

3. Select “F0: Read DTC Infor As Stored By ECU” in

“F0: Diagnostic Trouble Codes”. 

Is the DTC P0602 stored as “Present Failure”?

—

Go to Step 3

Refer to 

Diagnostic Aids

3

Download the latest software to the ECM using the
“SPS (Service Programming System)”. 
Is the action complete?

—

Verify repair

—

6E–206

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

DIAGNOSTIC TROUBLE CODE (DTC) P0606 (SYMPTOM CODE A) 

(FLASH CODE 28) ECU MALFUNCTION

DIAGNOSTIC TROUBLE CODE (DTC) P0606 (SYMPTOM CODE B) 

(FLASH CODE 28) ECU MALFUNCTION

Condition for setting the DTC and action taken when the DTC sets

Circuit Description & Diagnostic Aids

If the ECM inside (IC, circuit, memory, etc,) failed, DTC
P0606 (Symptom Code A) or P0606 (Symptom Code B)
will be stored.

Diagnostic Trouble Code (DTC) P0606 (Symptom Code A) (Flash Code 28) ECU 

Malfunction

Flash 

Code

Code

Symptom 

Code

MIL

DTC Name

DTC Setting Condition

Fail-Safe (Back Up)

28

P0606

A

ON

ECM Malfunction (1)

Gate Array communication 
error.

1. MAB (fuel cutoff solenoid 

valve cutoff) is operated. 

2. Desired injection quantity 

becomes 0mg/strk.

B

ON

ECM Malfunction (2)

1. Throttle position is below 

1%. 

2. Desired injection quantity is 

more than 0mg/strk. 

3. Engine speed is more than 

2000rpm. 

MAB (fuel cutoff solenoid valve 
cutoff) is operated. 

Step

Action

Value(s)

Yes

No

1

Was  the  “On-Board Diagnostic (OBD) System Check”
performed?

—

Go to Step 2

Go to On Board 

Diagnostic 

(OBD) System 

Check

2

1.  Connect the Tech 2. 

2. Review and record the failure information. 

3. Select “F0: Read DTC Infor As Stored By ECU” in

“F0: Diagnostic Trouble Codes”. 

Is the DTC P0606 (Symptom Code A) stored as
“Present Failure”?

—

Go to Step 3

Refer to 

Diagnostic Aids 

and Go to Step 

3

3

1. Using the Tech 2, ignition “On” and engine “Off”. 

2. Select  “F1: Clear DTC Information” in “F0:

Diagnostic Trouble Codes” with the Tech 2 and
clear the DTC information. 

3. Operate the vehicle and monitor the “F0: Read

DTC Infor As Stored By ECU” in the “F0:
Diagnostic Trouble Codes”. 

Was the DTC P0606 (Symptom Code A) stored in this
ignition cycle?

—

Go to Step 4

Refer to 

Diagnostic Aids

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

4JH1 ENGINE DRIVEABILITY AND EMISSIONS

6E–207

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 immobiliser system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobiliser System-ECM replacement” for
the ECM/Immobiliser linking procedure.

—

Verify repair

—

Step

Action

Value(s)

Yes

No