Mitsubishi Outlander GS45X. Manual — part 948

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-725

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 7.

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

YES : Refer to GROUP 54A, ETACS

− Diagnostic Trouble

Code Chart

P.54A-732

.

NO : Go to Step 3.

STEP 3. Check harness connector B-11 at ECM for
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then to go to Step 7.

STEP 4. Check for short circuit to power supply between
ETACS-ECU connector C-304 (terminal No. 10) and ECM
connector B-11 (terminal No. 92).
Q: Is the harness wire in good condition?

YES : Go to Step 5.
NO : Repair it. Then to go to Step 7.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-726

STEP 5. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch ON and "LOCK" (OFF), and then

leave it in the "LOCK" (OFF) position for more than 10
seconds. Place the ignition switch in the ON position again.

(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 P2530 set?

YES : Go to Step 6.
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.00-15

.

STEP 6. Replace the ETACS-ECU.
(1) Replace the ETACS-ECU.
(2) Turn the ignition switch ON and "LOCK" (OFF), and then

leave it in the "LOCK" (OFF) position for more than 10
seconds. Place the ignition switch in the ON position again.

(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P2530 set?

YES : Replace the ECM. When the ECM is replaced,

register the ID code. Refer to GROUP 42B, Diagnosis
− ID Codes Registration Judgment Table <Vehicles

with KOS>

P.42B-15

or GROUP 42C, Diagnosis

− ID

Codes Registration Judgment Table <Vehicles with
WCM>

P.42C-10

. Then go to Step 7.

NO : The inspection is complete.

STEP 7. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch ON and "LOCK" (OFF), and then

leave it in the "LOCK" (OFF) position for more than 10
seconds. Place the ignition switch in the ON position again.

(2) After the DTC has been deleted, read the DTC again.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P2530 set?

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

DTC U0001: Bus Off

CAUTION

• If the ECM output the DTC U0001, 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

• Always

Judgement Criterion

• Bus off error detected

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-727

.

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

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 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 3.

STEP 2. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the DTC has been deleted, read the DTC again.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U0001 set?

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

P.13B-903

). Then go to Step 3.

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.00-15

.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-728

STEP 3. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the DTC has been deleted, read the DTC again.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U0001 set?

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

DTC U0101: Transmission Control Module Time-Out

CAUTION

• If the ECM output the DTC U0101, make sure

to diagnose the CAN bus line.

• Before replacing the ECU, make sure that the

communication circuit is operating normally.

.

DESCRIPTIONS OF MONITOR METHODS

There is no data from TCM for the specified time.
(TCM detect communication error with ECM.)

.

MONITOR EXECUTION

Continuous

.

MONITOR EXECUTION CONDITIONS
(Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be

normal)

• Not applicable

.