Mitsubishi 380. Manual — part 610
MULTIPORT FUEL INJECTION (MPI) DIAG
MULTIPORT FUEL INJECTION (MPI)
13A-532
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 , diagnose CAN bus line.
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) Diagnose CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line normal?
YES : Go to Step 2.
NO : Repair the CAN bus line. Refer to GROUP 54C, Can
Bus Diagnostics Table
. Then go to Step 6.
STEP 2. 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) Read the ABS-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the ABS-DTC set?
YES : Refer to GROUP 35B, Anti-Lock Braking
System-Diagnostic Trouble Code Chart
NO : Go to Step 3.
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
MULTIPORT FUEL INJECTION (MPI) DIAG
MULTIPORT FUEL INJECTION (MPI)
13A-533
STEP 3. 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) Read the combination meter-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U1102 set?
YES : Go to Step 4.
NO : Go to Step 5.
STEP 4. 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 MPI-DTC has been deleted, read the MPI-DTC
again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U1102 set?
YES : Replace the ABS-ECU. Then go to Step 6.
NO : It can be assumed that this malfunction is intermittent
of CAN bus line between ENGINE-ECU and
ABS-ECU. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunctions
.
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
MULTIPORT FUEL INJECTION (MPI) DIAG
MULTIPORT FUEL INJECTION (MPI)
13A-534
STEP 5. 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 MPI-DTC has been deleted, read the MPI-DTC
again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U1102 set?
YES : Replace the ENGINE-ECU. Then go to Step 6.
NO : It can be assumed that this malfunction is intermittent
of CAN bus line between ENGINE-ECU and
ABS-ECU. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunctions
.
STEP 6. 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 MPI-DTC has been deleted, read the MPI-DTC
again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U1102 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-535
DTC U1120: Engine CAN Message
CAUTION
• Before replacing the ENGINE-ECU, make sure
that the communication circuit is operating
normally.
.
DTC SET CONDITIONS
Check Conditions
• None.
Judgement Criteria
• No MIL.
.
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)
• CAN line harness damage or connector damage.
• ECU.
• Refer to component locations GROUP-
• Refer to configuration diagrams GROUP-
• Refer to circuit diagrams GROUP-
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 , diagnose CAN bus line.
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) Diagnose CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line normal?
YES : Go to Step 2.
NO : Repair the CAN bus line. Refer to GROUP 54C, Can
Bus Diagnostics Table
. Then go to Step 2.
00DB076A
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
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