Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 923

7A1–12 TRANSMISSION CONTROL SYSTEM (4L30–E)

“Check Trans” Check

1. Indicator it is ON during 2 seconds at ignition (or when

the engine is cranked) but it is OFF after the engine
starts. The indicator is working normally GOTO
DIAGNOSTIC CHECK.

821RW018

Normal

C07RY005

2. Indicator it is flashing and the flash is 0.2 seconds ON

and 0.2 seconds OFF always when ignition is on
(engine cranked or not). This means that there is a
malfunction. GOTO DIAGNOSTIC CHECK.

Abnormal

C07RY004

3. Indicator it is staying ON always when Ignition is ON.

1. This means that connection between the lamp

and the PCM is shorted to ground.

2. Verify if instrument panel terminal 3 (WO/TOD) or

6 (WO/TOD) of connector I–9 is shorted to
ground.

3. Verify if the PCM connector J2 (RED) terminal 46

is shorted to ground.

4. Verify that the instrument panel terminal 15

(WO/TOD) or 26 (W/TOD) of connector I–9 is
connected to battery.

5. IF problem solved: GOTO CHECK TRANS

INDICATOR.

NO:Replace Powertrain Control Module (PCM).

4. Indicator it is staying OFF with the ignition ON (engine

OFF).
1. This means that connection between the lamp

and the PCM is shorted to battery or opened.

2. Verify if instrument panel terminal 3 (WO/TOD) or

6 (WO/TOD) of connector I–9 is shorted to
battery or open.

3. Verify if the PCM connector J2 (RED) terminal 46

is shorted to battery or open.

4. Verify that the instrument panel terminal 15

(WO/TOD) or 26 (W/TOD) of connector I–9 is
connected to battery. If not, check the fuses and
the connections (terminal 10 of connector H–25)
voltage.

TRANSMISSION CONTROL SYSTEM (4L30–E)

7A1–13

5. IF problem solved: GOTO CHECK TRANS

INDICATOR.

NO: Replace Powertrain Control Module (PCM).

D07RY00009

Tech 2 OBD II Connection

In order to access OBD II Powertrain Control Module
(PCM) data, use of the Tech 2 scan tool kit (7000086) is
required.

1. The electronic diagnosis equipment is composed of:

1. Tech 2 hand held scan tool unit (7000057) and

DLC cable (3000095).

901RW176

2. SAE 16/19 adaptor (3000098) (1), RS 232 loop

back connector (3000112) (2), and PCMCIA card
(3000117) (3).

F07RW033

7A1–14 TRANSMISSION CONTROL SYSTEM (4L30–E)

2. Connecting the TECH2

901RW180

Legend

(1) PCMCIA Card
(2) RS 232 Loop Back Connector

(3) SAE 16/19 Adapter
(4) DLC Cable
(5) Tech 2

D

Before operating the Isuzu PCMCIA card with the
Tech 2, the following steps must be performed:

1. The Isuzu 2000 System PCMCIA card (1) inserts

into the Tech 2 (5).

2. Connect the SAE 16/19 adapter (3) to the DLC

cable (4).

3. Connect the DLC cable to the Tech 2 (5)

4. Make sure the vehicle ignition is off.

TRANSMISSION CONTROL SYSTEM (4L30–E)

7A1–15

5. Connect the Tech 2 SAE 16/19 adaptor to the

vehicle DLC.

821RW021

6. The vehicle ignition turns on.

7. Verify the Tech 2 power up display.

060RW009

NOTE: The RS232 Loop back connector is only to use for
diagnosis of Tech 2 and refer to user guide of the Tech 2.

8. The power up screen is displayed when you

power up the tester with the Isuzu systems
PCMCIA card. Follow the operating procedure
below.

060R100102