Mitsubishi 380. Manual - part 593

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-464

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-465

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 P2101 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 P2101 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-466

DTC P2102: Throttle Actuator Control Motor Circuit (Shorted Low).

.

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

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-467

STEP 1. Check harness connector B-06 at throttle actuator 
control motor for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 2.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 7.

STEP 2. Check the throttle actuator control motor.
(1) Disconnect the connector B-06.

(2) Measure the resistance between throttle actuator control 

motor side connector terminal No. 1 and No. 4.

Standard value: 1.5 

± 0.3 ohms [at 20°C (68°F)]

Q: Is the measured resistance between standard value?

YES : Go to Step 3.
NO :  Replace the throttle body assembly. Then go to Step 

7.

03DB180A

CONNECTOR: B-06

B-06 (B)

03DB180A

CONNECTOR: B-06

B-06 (B)

03DB181A

THROTTLE ACTUATOR

CONTROL MOTOR 

CONNECTOR