Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 230

ENGINE DRIVEABILITY AND EMISSIONS

6E–161

6

Using the DVM and check the injector coil for the
affected cylinder.

1.  Ignition “Off”,  engine “Off”. 

2. Disconnect injector connector for the affected

cylinder. 

3. Measure the resistance of injector coil. 

Was the tester indicated specified value? 

Approximately 
12.5

Ω at 20°C

Go  to  Step 7

Go to Step 11

Step

Action

Value(s)

Yes

No

1

1

2

2

Injector

6E–162

ENGINE DRIVEABILITY AND EMISSIONS

7

Using the DVM and check the injector power supply
circuit for the affected cylinder.

1. Ignition “On”, engine “Off”. 

2. Disconnect the injector connector for the affected

cylinder. 

3. Check the circuit for open circuit. 

Was the DVM indicated specified value?

Battery 
voltage

Go to Step 9

Go to Step 8

8

Repair the open or short to ground circuit between the
“IGN” fuse (15A) and injector for the affected cylinder. 
Is the action complete?

—

Verify repair

—

Step

Action

Value(s)

Yes

No

V

1

E-6

No.1 Cylinder

V

1

E-7

No.2 Cylinder

V

1

E-8

No.3 Cylinder

V

1

E-9

No.4 Cylinder

ENGINE DRIVEABILITY AND EMISSIONS

6E–163

9

Using the DVM and check the injector signal circuit for
the affected cylinder.
Breaker box is available: 

1. Ignition “Off”, engine “Off”. 

2. Install the breaker box as type A. (ECM

disconnected) Ref. 6E-80.

3. Disconnect the injector connector for the affected

cylinder. 

4. Check the circuit for open or short to ground

circuit. 

Was the problem found?

—

Repair faulty 

harness and 

verify repair

Go to Step 10

Step

Action

Value(s)

Yes

No

9

2

E-6

No.1 Cylinder

22

2

E-7

No.2 Cylinder

8

2

E-8

No.3 Cylinder

11

2

E-9

No.4 Cylinder

6E–164

ENGINE DRIVEABILITY AND EMISSIONS

9

Breaker box is not available: 

1. Ignition “Off”, engine “Off”. 

2. Disconnect the injector connector for the affected

cylinder and ECM connector. 

3. Check the circuit for open or short to ground

circuit. 

Was the problem found?

—

Repair faulty 

harness and 

verify repair

Go to Step 10

Step

Action

Value(s)

Yes

No

E-60(J1)

E-6

9

2

No.1 Cylinder

E-60(J1)

E-7

22

2

No.2 Cylinder

E-60(J1)

E-8

8

2

No.3 Cylinder

E-60(J1)

E-9

11

2

No.4 Cylinder