Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 276

DTC appears 

 

B8001  REPLACE ELECTRONIC CONTROL UNIT (ECU)

   (IMMOBILIZER FAULT) 

 

Replace ICU 

 

B8002  IMMOBILIZER NOT PROGRAMMED 

 

Programming Immobilizer Function. 

 

B8003  TRANSPONDER KEY PROBLEM 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transponder key code read error 

Is key correct?

 

With other keys,
check for proper

operation

Rewrite transponder key. 

Please refer to “transponder programming”
on page 14. 

Rewrite all key 

Reregistration

Check antenna wiring 

Does B8003 appear? 

Correction check

ICU replacement 

Transponder replacement

OK 

OK 

NG

Yes 

No

NG

NG

OK

OK

B8004  IMMOBILIZER COIL CIRCUIT    (ANTENNA COIL FAULT) 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B8005  COMMUNICATION LINE W VOLTAGE Low 

 

 

 

 

 

 

 

 

 

 

 

 

 

B8006  COMMUNICATION LINE W VOLTAGE High 

 

 

 

 

 

 

 

 

 

Check path between 

ICU pin A-1 and pin A-3

for continuity 

Replace steering lock Assy

NG 

Clear DTC 

 

OK 

Check for 

Ext Harness; Antenna 

 

ICU

Connector 2 pin 

A1 

A3 

Antenna coil

NG 
Correction 

NG 

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

 

Disconnect both 

connectors and check 

voltage on ICU side. 

voltage 

Ǩ 2.5v 

Wiring repair 

Yes 

Clear DTC 

No

 

 

Check path

between ICU pin B-8,ECM

pin for continuity 

Disconnect both

connectors and check 

path between ICU 
and body earth for 

continuity 

Wiring repair 

NG 

OK 

B8007  NO ENGINE REQUEST RECEIVED 

 

 

 

 

 

 

 

 

B8008  WRONG TRANSPONDER KEY 

 

 

 

 

 

 

 

 

 

 

 

B8009  NO TRANSPONDER KEY PROGRAMMED 

B8010  UNKNOWN TRANSPONDER KEY 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check path ICU   

pin B-7 and ECM pin A-39 

for continuity 

Replace ECM, because ECM internal circuit fails.

OK 

Wiring repair 

NG 

Is key correct? 

 

 

ICU replacement 

Rewrite transponder key. 

Rewrite all key 

OK

OK

Check other keys 

Reregister

transponder key 

NG

NG

 

Reregistration

ICU replacement

NG

Rewrite transponder

Immobilizer system Electrical wiring   

 

Gasoline Engine  (6VD1 3.2L)