Mitsubishi 380. Manual - part 582

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-420

STEP 2. Check the throttle body. (throttle valve area)

Q: Is the throttle valve area dirty?

YES : Perform cleaning. Refer to Throttle body (throttle 

valve area) cleaning 

P.13A-660

. Then go to Step 4.

NO :  Go to Step 3.

STEP 3. Replace the throttle body assembly.
(1) Replace the throttle body assembly.
(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 P0506 set?

YES : Then go to Step 4.
NO :  The inspection is complete.

STEP 4. Test the EOBD drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function 

− EOBD Drive Cycle − 

P.13A-11

.

(2) Check the diagnostic trouble code (DTC).

Q: Is DTC P0506 set?

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

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-421

DTC P0507: Idle Control Sytem RPM Higher Than Expected

.

TECHNICAL DESCRIPTION

• The amount of air taken in during idling is regu-

lated by the opening and closing of the throttle 
valve.

• The ENGINE-ECU checks the difference 

between the actual engine speed and the target 
engine speed.

.

Check Conditions

• Vehicle speed is 0 km/h.

• Intake air temperature is above -9.8?.

• Engine speed is idle.

• Engine coolant temperature is above 60?.

• Altitude is lower than 3000 meters.

Judgment Criteria

• Idle correction deviation is above 100r/min for 19 

seconds.

• MIL activated after 2 drive cycles.

• No Limp home.

.

EOBD DRIVE CYCLE PATTERN

Refer to Diagnostic Function 

− EOBD Drive Cycle −  

P.13A-11

.

.

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

• Intake system vacuum leak.

• Throttle body assy failed.

• 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

STEP 1. 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 a diagnostic trouble code other than P0507 set?

YES : Refer to Diagnostic Trouble Code Chart 

P.13A-17

.

NO :  Go to Step 2.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-422

STEP 2. Check the intake system vacuum leak.

Q: Are there any abnormalities?

YES : Repair or replace it. Then go to Step 4.
NO :  Go to Step 3.

STEP 3. Replace the throttle body assembly.
(1) Replace the throttle body assembly.
(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 P0507 set?

YES : Then go to Step 4.
NO :  The inspection is complete.

STEP 4. Test the EOBD drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

− 

P.13A-11

.

(2) Check the diagnostic trouble code (DTC).

Q: Is DTC P0507 set?

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

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-423

DTC P0513: Immobilizer Malfunction

.

TECHNICAL DESCRIPTION

• ENGINE-ECU monitors the communication con-

dition with the ETACS-ECU. When an abnormal-
ity in communication is found, ENGINE-ECU 
prevents engine start.

.

DTC SET CONDITIONS

Check Conditions

• Ignition switch: ON

Judgment Criteria

• When the communication error between 

ENGINE-ECU and the ETACS-ECU continues for 
2 seconds or more.

• No MIL

• Engine will not start.

.

TROUBLESHOOTING HINTS (The most likely 

causes for this code to be set are: )

• Incorrect VIN in ENGINE-ECU.

• ENGINE-ECU programmed VIN does not match 

ETACS VIN.

• 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

STEP 1. Using diagnostic tool , read the immobilizer 
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) Read the immobilizer-DTC.
(4) After the DTC has been deleted, read the DTC again.
(5) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the immobilizer-DTC- P0513 or P0630 set?

YES : Refer to GROUP 54A, Ignition Switch and 

Immobilizer System 

− Diagnostic Trouble Code Chart 

P.54A-13

.

NO :  Inspection is complete.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827