Mitsubishi 380. Manual - part 13

 

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Mitsubishi 380. Manual - part 13

 

 

DIAGNOSTIC TROUBLE CODE PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-49

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set.
(1) Turn the ignition switch to the "ON" position.
(2) Check if the DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the DTC set?

YES : Replace the combination meter. On completion, verify 

that the DTC is not reset.

NO :  A poor connection, open circuit or other intermittent 

malfunction is present in the CAN bus lines between 
the combination meter and the ETACS-ECU (Refer to 
GROUP 00, How to Cope with Intermittent 
Malfunction 

P.00-14

).

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set.
(1) Turn the ignition switch to the "ON" position.
(2) Check if the DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the DTC set?

YES : Replace the ETACS-ECU. On completion, verify that 

the DTC is not reset.

NO :  A poor connection, open circuit or other intermittent 

malfunction is present in the CAN bus lines between 
the combination meter and the ETACS-ECU (Refer to 
GROUP 00, How to Cope with Intermittent 
Malfunction 

P.00-14

).

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

DIAGNOSTIC TROUBLE CODE PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-50

 DTC 015  (U1111): Multi center Display Unit Time-out.

CAUTION

If  DTC 015  (U1111) is set in the ETACS-ECU, 
always diagnose the CAN main bus line.

CAUTION

Whenever the ECU is replaced, ensure that the 
communication circuit is normal.

.

TROUBLE JUDGMENT

The ETACS-ECU receives multi center dis-
play-related signal from the multi center display . If 
the ECU cannot receive the signal,  DTC 015  
(U1111) will be set.

.

TECHNICAL DESCRIPTION (COMMENT)

Current trouble

• Connector(s) or wiring harness in the CAN bus 

lines between the multi center display unit  and 
the ETACS-ECU, the power supply system to the 
multi center display unit , the multi center display 
unit  itself, or the ETACS-ECU may be defective.

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

Past trouble

• If  DTC 015  (U1111) is stored as a past trouble, 

carry out diagnosis with particular emphasis on 
wiring and connector(s) in the CAN bus line 
between the multi center display unit  and the 
ETACS-ECU, and the power supply system to the 
multi center display unit . For diagnosis proce-
dures, refer to "How to cope with past trouble" 
(Refer to GROUP 00, How to treat past trouble 

P.00-16

).

NOTE: You cannot find a past trouble, by the 
MUT-III CAN bus diagnostics even if there is a 
failure in CAN bus lines. In this case, refer to 
GROUP 00, How to Cope with Intermittent Mal-
function 

P.00-14

 and check the CAN bus lines. 

You can narrow down the possible cause of the 
trouble by referring to the DTC, which is set 
regarding the CAN communication-linked ECUs 
(Refer to GROUP 54C, CAN Bus Line Diagnosis 

P.54C-6

).

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

• Malfunction of the multi center display 

• The ETACS-ECU may be defective

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: DIAGNOSTIC TOOL (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A

DIAGNOSTIC TROUBLE CODE PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-51

STEP 1. Using diagnostic tool MB991958, diagnose the 
CAN bus line.

CAUTION

To prevent damage to diagnostic tool MB991958, always 
turn the ignition switch to the "LOCK" (OFF) position 
before connecting or disconnecting diagnostic tool 
MB991958.
(1) Connect diagnostic tool MB991958. Refer to "How to 

connect SWS monitor 

P.54B-13

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO :  Repair the CAN bus line (Refer to GROUP 54C, 

Diagnosis 

P.54C-13

).

STEP 2. Using diagnostic tool MB991958, read the multi 
center display diagnostic trouble code.
Check that the multi center display unit sets a DTC.
(1) Turn the ignition switch to the "ON" position.
(2) Check if the multi center display DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the DTC set?

YES : Diagnose the multi center display unit  (Refer to 

GROUP 54A, Diagnosis 

P.54A-256

).

NO :  Go to Step 3.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

DIAGNOSTIC TROUBLE CODE PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-52

STEP 3. Using diagnostic tool MB991958, read the A/C 
diagnostic trouble code.
Check if a multi center display-related DTC is set in the A/C 
system.
(1) Turn the ignition switch to the "ON" position.
(2) Check whether A/C system-related DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the DTC set?

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

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set.
(1) Turn the ignition switch to the "ON" position.
(2) Check if the DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the DTC set?

YES : Replace the multi center display . On completion, 

verify that the DTC is not reset.

NO :  A poor connection, open circuit or other intermittent 

malfunction is present in the CAN bus lines between 
the multi center display  and the ETACS-ECU (Refer 
to GROUP 00, How to Cope with Intermittent 
Malfunction 

P.00-14

).

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

 

 

 

 

 

 

 

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