Isuzu KB P190. Manual — part 996

7A2-18 TRANSMISSION CONTROL SYSTEM (AW30–40LE)

Normal

C07RY005-1

2. Indicator is flashing and the flash is 0.4 seconds

“ON” and 0.4 seconds “OFF” always when ignition is
on (engine cranked or not). This means that there is
a malfunction. Go to On-Board Diagnostic (OBD)
System Check.

Abnormal

C07RY00042-1

3. Indicator is staying “ON” always when Ignition is

“ON”.

1. This means that connection between the lamp

and the indicator control unit is shorted to
ground.

2.

Verify if instrument panel terminal 25

of

connector B–23 is shorted to ground.

3. Verify if the indicator control unit connector C–

95 terminal 3 is shorted to ground.

4. Verify that the instrument panel terminal 8 of

connector B–24 is connected to battery.

5. If a problem was solved: Go to Check Trans

Indicator.

NO: Replace Transmission Control Module
(TCM).

4. Indicator is staying “OFF” with the ignition “ON”

(engine “OFF”).

1. This means that connection between the lamp

and the indicator control unit is shorted to
battery or opened.

2.

Verify if instrument panel terminal 25

of

connector B–23 is shorted to battery or open.

3. Verify if the indicator control unit connector C–

95 terminal 3 is shorted to battery or open.

4. Verify that the instrument panel terminal 25 of

connector B–23 is connected to battery. If not,
check the meter fuse and the connections
(terminal 2 of connector H–7) voltage.

TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-19

5. If a problem was solved: Go to Check Trans

Indicator.

NO: Replace Transmission Control Module
(TCM).

RTW77ALF001301

7A2-20 TRANSMISSION CONTROL SYSTEM (AW30–40LE)

Tech 2 Operating

RTW77ALH000301

RTW77ALH000401

TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-21

RTW77ALH000501

RTW77ALH000601