Mitsubishi 380. Manual — part 609

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-528

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

P.54C-15

. 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 combination meter-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the combination meter-DTC set?

YES : Refer to GROUP 54A, Chassis Electrical-Diagnostic

Trouble Code Chart

P.54A-13

.

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-529

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 ETACS-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is DTC 013 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 U1100 set?

YES : Replace the combination meter. Then go to Step 5.
NO : It can be assumed that this malfunction is intermittent

of CAN bus line between ENGINE-ECU and
combination meter. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunctions

P.00-14

.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-530

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 U1100 set?

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

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-531

DTC U1102: ABS-ECU TIME-OUT

CAUTION

• If the ENGINE-ECU output the DTC U1102,

make sure to diagnose the CAN bus line.

• Before replacing the ENGINE-ECU, make sure

that the communication circuit is operating
normally.

.

DTC SET CONDITIONS

Check Conditions

• Battery positive voltage is 10 volts or higher.

• Engine is not cranked, or at least 3 seconds have

passed since engine was cranked.

Judgement Criteria

• Unable to receive ABS-ECU signals through the

CAN bus line.

.

COMMENT

Current Trouble

• Some of the possible causes are a harness or

connector damage between the ENGINE-ECU
and the ABS-ECU on the CAN bus line, a failure
in the ABS-ECU power supply system, a failure in
the ABS-ECU, or a failure in the ENGINE-ECU.

Past Trouble

• Proceed to troubleshoot based on a harness or

connector damage on the CAN bus line between
the ENGINE-ECU and ABS-ECU, and a failure in
the ABS power supply system. Refer to "How to
cope with past trouble" (Refer to GROUP 00,
How to Use Troubleshooting/Inspection Service
Points

− How to Cope with Intermittent Malfunc-

tions

P.00-14

).

CAUTION

When the ignition key is maintained within the
range "A" (i.e., the ignition switch IG2 is in OFF
position but the cranking does not start) for more
than 1 second, ENGINE-ECU stores DTC U1102
(the past trouble).

NOTE: If a malfunction occurred in the past, a failure
cannot be discovered through the CAN bus diagno-
sis even if there might be a problem with the CAN
bus. In this case, refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunctions

P.00-14

. Fur-

thermore, it is possible to narrow down the areas of
the possible failures from the DTCs that are output
by the ECUs, which are communicating on the CAN
bus (Refer to GROUP 54C, CAN bus line Diagnos-
tics Flow

P.54C-6

).

.

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

• Refer to component locations GROUP-

70

• Refer to configuration diagrams GROUP-

80

• Refer to circuit diagrams GROUP-

90

• CAN line harness damage or connector damage.
• ABS-ECU failed.
• ENGINE-ECU failed.

AK204418 AB

ACC POSITION

LOCK (OFF)
POSITION

ON POSITION

START
POSITION

RANGE
"A"