Mitsubishi 380. Manual — part 594

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-468

STEP 3. Check harness connector B-20 at ENGINE-ECU for
damage
Q: Is the harness connector in good condition?

YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 7.

STEP 4. Check for short circuit to ground and harness
damage between throttle actuator control motor connector
B-06 (terminal No. 4) and ENGINE-ECU connector B-20
(terminal No. 50).
Q: Is the harness wire in good condition?

YES : Go to Step 5.
NO : Repair it. Then go to Step 7.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

03DB180A

CONNECTOR: B-06

B-06 (B)

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-469

STEP 5. Check for short circuit to ground and harness
damage between throttle actuator control motor connector
B-06 (terminal No. 1) and ENGINE-ECU connector B-20
(terminal No. 49).
Q: Is the harness wire in good condition?

YES : Go to Step 6.
NO : Repair it. Then go to Step 7.

03DB180A

CONNECTOR: B-06

B-06 (B)

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-470

STEP 6. Using diagnostic tool , read the diagnostic trouble
code (DTC).

CAUTION

To prevent damage to diagnostic tool , always turn the
ignition switch to the "LOCK"(OFF) position before con-
necting or disconnecting diagnostic tool .
(1) Connect diagnostic tool to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK"(OFF) position.

Q: Is DTC P2102 set?

YES : Then go to Step 7.
NO : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunctions

P.00-14

.

STEP 7. Using diagnostic tool , read the diagnostic trouble
code (DTC).
(1) Connect diagnostic tool to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK"(OFF) position.

Q: Is DTC P2102 set?

YES : Retry the troubleshooting.
NO : The inspection is complete.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-471

DTC P2103: Throttle Actuator Control Motor Circuit (Shorted High).

.

CIRCUIT OPERATION

• Controls the current that is applied from the

ENGINE-ECU (terminals No. 49, No. 50) to the
throttle actuator control motor (terminals No. 1,
No. 4).

.

TECHNICAL DESCRIPTION

• ENGINE-ECU varies the direction and the

amperage of the current that is applied to the
throttle actuator control motor in order to control
the opening of the throttle valve.

.

DTC SET CONDITIONS

Check Condition

• Battery positive voltage is higher than 6.5 volts.

Judgement Criteria

• Maximum permissable PWM pulse duty factor is

above 80% for 0.6 sec.gement Criteria.

• MIL activated immediately.

• Fuel cut and engine speed limited.

.

EOBD DRIVE CYCLE PATTERN

None.

.

TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)

• Throttle actuator control motor failed.

• Shorted throttle actuator control motor circuit,

harness damage or connector damage.

• Refer to component locations GROUP-

70

• Refer to configuration diagrams GROUP-

80

• Refer to circuit diagrams GROUP-

90

DIAGNOSIS

Required Special Tools:

• : Diagnostic tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

03DB180A

CONNECTOR: B-06

B-06 (B)

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER