Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 274

Diagnostic procedure 

 

(6VD1 3.2L/C22NE 2.2L/22LE 2.2L/20LE 2.0L/4JG2 3.1L/4JB1 2.8L/4JA1 2.5L) 

 

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 01MY 

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 

 

Code 

(BCD) 

Item Detecting 

Condition 

B8011 TRANSPONDER 

KEY PROBLEM 

Transponder code unsuccessfully read 5 consecutive time. 
  (Not completely read in 500ms transponder code) 

B8012 WRONG 

TRANSPONDER 
KEY 

Transponder code read from the ignition key does not match the 
transponder code stored in the control unit. 

B8013 IMMOBILIZER 

NOT 

PROGRAMMED 

Immobilizer program no executed. 

B8014 NO 

TRANSPONDER 

KEY PROGRAMMED 

Processing to save the transponder key in the control unit not   
Executed. 

B8015 VEHICLE 

SPEED 

SIGNAL Lo (Gasoline) 
FREQUENCY 
SIGNAL Lo (Diesel) 

Lo level (2.5v or less) input during the Hi level was being output
In the immobilizer Signal. (Gasoline Engine) 
Lo level (2.5v or less) input during the Hi level was being output
to the communication line. (Diesel Engine) 

B8016 VEHICLE 

SPEED 

SIGNAL Hi (Gasoline) 
FREQUENCY 
SIGNAL Hi (Diesel) 

Hi level (more than 2.5v) input during the Lo level was being 
output in the immobilizer Signal. (Gasoline Engine) 
Hi level (more than 2.5v) input during the Lo level was being 
output to the communication line. (Diesel Engine) 

B8017 NO 

ENGINE 

REQUEST 
RECEIVED 

No request signal received from the engine control unit in a 
second after the ignition key has been placed at ON. 
(Gasoline engine only) 

B8023 ANTENNA 

COIL 

OPEN 

Antenna coil not connected. 

B8024 WRONG 

TRANSPONDER 
RESPONSE 

Transponder response signal with the challenge is wrong. 

B8025 WRONG 

ENGINE 

REQUEST 

The challenge signal from the engine control unit is invalid. 
(Gasoline engine only) 

B8055 

EEPROM ERROR 

Write and read cannot be correctly made to and from the 
EEPROM in the control unit. 

 

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 (01MY). 

 

 

Proper parts Numbers are following. 

 Gasoline 

Engine 

897228-184X 

 

 

 

 

 

Suffix number 

 Diesel 

Engine 

897228-183X 

 

 

 

 

 

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 

No.1 Pin 

No.2 Pin 

+B

Ignition SW

Check both wiring systems for continuity.

DTC appears 

 

B8011  TRANSPONDER KEY PROBLEM 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note : B0011 means Body category Number 0011 Diagnostic Trouble Code. 

 

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 B0023 appear? 

Correction check

ICU replacement 

Transponder replacement

OK 

OK 

NG

Yes 

No

NG

NG

OK

OK

B8012  WRONG TRANSPONDER KEY 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B8013  IMMOBILIZER NOT PROGRAMED 

Replace ICU 

 

B8014  NO TRANSPONDER KEY PROGRAMED 

Replace ICU 

 

B8055 EEPROM 

ERROR 

Replace ICU 

 

B8015  VEHICLE SPEED SIGNAL Lo (Gasoline Engine) 

 

FREQUENCY SIGNAL Lo (Diesel Engine) 

 

 

*Speed sensor signal voltage lower than 2.5v. (Gasoline Engine) 

 

*Frequency signal voltage lower than 2.5v (Diesel Engine) 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is key correct? 

 

 

ICU replacement 

Rewrite transponder key. 

Rewrite all key 

OK

OK

Check other keys 

Reregister

transponder key 

NG

NG

 

 

Check path

between ICU pin 8,ECM 

pin for continuity 

Disconnect both

connectors and check 

path between ICU 
and body earth for 

continuity 

Wiring repair 

NG 

OK