Mitsubishi Outlander GS45X. Manual — part 949

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-729

DTC SET CONDITIONS
Logic Flow Chart

Check Conditions

• Battery positive voltage is between 10 and 16.5

volts.

Judgement Criterion

• Unable to receive TCM signals through the CAN

bus line 4 seconds.

.

OBD-II DRIVE CYCLE PATTERN

None.

.

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

• CAN line harness damage or connector damage.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

AK604369

Start

Yes

Yes

Yes

No

No

No

Continuous failure

for specified time

Malfunction

End

Good

Monitoring
conditions

Communication status

fails

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-730

STEP 1. Using scan tool MB991958, diagnose CAN bus
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 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,

Diagnosis

− CAN Bus Diagnostics Table

P.54C-17

.

Then go to Step 6.

STEP 2. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) Read the TCM-DTC.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CVT-DTC set?

YES : Refer to GROUP 23A, Diagnosis

− Diagnosis Code

Chart

P.23A-29

.

NO : Go to Step 3.

STEP 3. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) Check that the other ECU performing CAN communication

with TCM sets DTC No. U0101. Refer to GROUP 54C, CAN
Communication-related DTC (U-code) table

P.54C-220

.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U0101 set?

YES : Go to Step 4.
NO : Go to Step 5.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-731

STEP 4. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the MFI-DTC has been deleted, read the MFI-DTC

again.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U0101 set?

YES : Replace the TCM. Then go to Step 6.
NO : It can be assumed that this malfunction is intermittent

of CAN bus line between ECM and TCM. Refer to
GROUP 00, How to Use Troubleshooting/Inspection
Service Points

− How to Cope with Intermittent

Malfunctions

P.00-15

.

STEP 5. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the MFI-DTC has been deleted, read the MFI-DTC

again.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U0101 set?

YES : Replace the ECM (Refer to, Removal and Installation

P.13B-903

). Then go to Step 6.

NO : It can be assumed that this malfunction is intermittent

of CAN bus line between ECM and TCM. Refer to
GROUP 00, How to Use Troubleshooting/Inspection
Service Points

− How to Cope with Intermittent

Malfunctions

P.00-15

.

STEP 6. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the MFI-DTC has been deleted, read the MFI-DTC

again.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U0101 set?

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

DTC U0114: AWD-ECU Time-Out <AWD>

CAUTION

• If the ECM output the DTC U0114, make sure

to diagnose the CAN bus line.

• Before replacing the ECU, make sure that the

communication circuit is operating normally.

.

DTC SET CONDITIONS

Check Conditions

• After 2 seconds have passed since the ignition

switch was turned to "ON" position.

• Battery positive voltage is 10 volts or higher.

Judgement Criterion

• Unable to receive AWD-ECU signals through the

CAN bus line for 4 seconds.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-732

.

COMMENT

Current Trouble

• Some of the possible causes are a harness or

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

Past Trouble

• Proceed to troubleshoot based on a harness or

connector damage on the CAN bus line between
the ECM and AWD-ECU, and a failure in the
AWD-ECU 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.00-15

).

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, ECM stores DTC U0114 (the past
trouble).
NOTE: If a malfunction occurred in the past, a failure
cannot be discovered through the MB991958 CAN
bus diagnosis 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.00-15

.

Furthermore, 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, Explanation About The
Scan Tool (M.U.T.-III) Can Bus Diagnostics

P.54C-10

).

.

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

• CAN line harness damage or connector damage.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

AK700540AB

ACC position

Lock (off)
position

ON position

Start
position

Range
"A"