Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 265

27

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.

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.

No

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.

Gas Engine

897228-184X

Suffix number

Diesel Engine 897228-183X

Suffix number

28

DTC appears  

B0011

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 B0023 appear?

Correction check

ICU replacement

Transponder replacement

OK

OK

Yes

NG

NG

OK

No

No

OK

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

29

B0012

WRONG TRANSPONDER KEY

Is key correct?

ICU replacement

Rewrite transponder key.

Rewrite all key

OK

OK

Check other keys

Reregister

transponder key

NG

NG

B0013

IMMOBILIZER NOT PROGRAMMED

Replace ICU.

B0014

NO TRANSPONDER KEY PROGRAMMED

Replace ICU.

B0055

EEPROM ERROR

Replace ICU.

B0015

VEHICLE SPEED SIGNAL Lo (Gas Engine)
FREQUENCY SIGNAL Lo (Diesel ENGINE)

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

*Frequency signal voltage lower than 2.5v (Diesel)

Check path and

between ICU pin 8, ECM

pin (Gas), or DDS-1 (Diesel)

for continuity

Disconnect both

connectors and check

path between ICU

and body earth for

continuity

Wiring repair

NG

OK

30

B0016

VEHICLE SPEED SIGNAL Hi (Gas Engine)
FREQUENCY SIGNAL Hi (Diesel ENGINE)

Disconnect both

connectors and check

voltage on ICU side.

voltage 

≥

 2.5v

Wiring repair

Yes

No

Clear DTC

B0017

NO ENGINE REQUEST RECEIVED (Gas Engine)

Check path ICU

pin 3 and ECM pin B-18(V6)

J2-B4(L4) for continuity

Replace ECM, because ECM internal circuit fails.

OK

Wiring repair

NG

B0023

ANTENNA COIL OPEN

Antenna coil open

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

NG
Correction

NG