Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 275

B8016  VEHICLE SPEED SIGNAL Hi (Gasoline Engine) 

 

FREQUENCY SIGNAL Hi (Diesel Engine) 

 

 

 

 

 

 

 

 

 

B8017  NO ENGINE REQUEST RECEIVED (Gasoline Engine) 

 

 

 

 

 

 

 

 

 

 

 

Disconnect both 

connectors and check 

voltage on ICU side. 

voltage 

Ǩ 2.5v 

Wiring repair 

Yes 

Clear DTC 

No

 

Check path ICU   

pin 3 and ECM pin B-8(V6) 

J2-B4(L4) for continuity 

Replace ECM, because ECM internal circuit fails.

OK 

Wiring repair 

NG 

B8023  ANTENNA COIL OPEN 

 

Antenna coil open 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B8024  WRONG TRANSPONDER RESPONSE 

 

Wrong Transponder code 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check path between 

ICU pin 6 and pin 13 

for continuity 

Replace steering lock Assy

NG 

Clear DTC 

 

 

OK 

OK 

Check path between 

ICU pin 6 and connector A pin

for continuity 

Check path between 

ICU pin 13 and connector A pin

for continuity 

 

ICU

A connector 2 pin

6

13

Antenna coil

NG 
Correction 

NG 
Correction 

NG 

NG 

Need following repair 
1. Key replacement 
2. Rewrite transponder 
3. Replace door key cylinder

 

Reregistration

ICU replacement

NG

Rewrite transponder

Diagnostic procedure 

 

(4JA1-TC 2.5L/4JH1-TC 3.0L) 

 

System guidance 

Note: 

Immobilizer may detect a history DTC by the timing of ON-OFF of a ignition switch. 

Don't remove the ECM and ICU recklessly. 

 
l Engine dose not run when any Diagnostic Trouble Code (DTC) is flagged, starting from 02MY 

TFR/S. 

l Once the cause of DTC is repaired or gone, engine can be operated normally, and present 

DTC becomes history code. 

l History code is canceled by no repeat failure on 25 consequence ignition key on afterward. 
l History code cannot be canceled by battery connector disconnected, starting from 01MY. 
 
Diagnostic Trouble Code (DTC) list 

 

 

No 

Code 

(BCD) 

Detecting Condition 

1 

 

B8001 

Replace Electronic Control Unit(ECU) 
This error code appears if a RAM /ROM Error was detected or the EEPROM
Is defect. 

2 

 

B8002 

 
Immobiliser Not Programmed 
 

3 

 

B8003 

 

Transponder Key Problem 
Reading of Transponder information failed with ignition on transponder has 
a fault. 
Hardware fault in reading circuit. 

4 

 

B8004 

 

 
Immobiliser Coil Circuit 

5 

 

B8005 

 

 
Communication Line W Voltage Low 

6 

 

B8006 

 
Communication Line W Voltage High 
 

7 

 

B8007 

 

 
No Engine Request Received (Check Engine Lamp disconnected?) 

8 

 

B8008 

 

 
Wrong Transponder Key 

9 

 

B8009 

 

 
No Transponder Key Programmed 

10 

 

B8010 

 

 
Unknown Transponder Key 

 

Diagnostic procedure 

 

No DTC indicates 

Engine does not start to run even though all engine and electrical system are OK, and no DTC 

appears. 

 

1. 

12V power is not supplied to ICU. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. 

Engine does not start after steering assembly is repaired. 

 

 

Check if connector for Antenna coil circuit at steering shaft is correct, or missing connection. 

 

If not correct, replace the steering assy with corrector. 

 

3. 

If engine does not start after ICU replacement, check part number (02MY). 

 

 

Proper parts Numbers are following. 

 

 

 

Electrical Die Engine 

897234-671X 

 

 

 

 

 

                Suffix number 

 

Check engine light

Is blinking at 2Hz.

ECM or electrical
unit wiring check

No 

Yes

Yes

 

Starter is not rotated
By correct key at all.

Check DTC with Tech-2

12V power is not
supplied to ICU 
Repair 12V circuit

ICU power supply turns off when both +B line
and ignition switch line turn off. 

 
ICU 

B-4 Pin 

B-3 Pin 

+B

Ignition SW

Check both wiring systems for continuity.