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.