Mitsubishi 380. Manual - part 880

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-54

STEP 6. Recheck for diagnostic trouble code.
Recheck if the DTC is set.

1. Erase the DTC.
2. Turn the ignition switch to "ON" position.
3. Check if the DTC is set.

Q: Is the check result satisfactory?

YES : The procedure is complete.
NO :  Go to Step 1.

16DB407A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

A/T

CONTROL

UNIT

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-55

DTC U1102: ABS-ECU Time-out

CAUTION

If DTC U1102 is set in the combination meter, 
always diagnose the CAN bus lines.

CAUTION

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

.

CIRCUIT OPERATION

 Refer to 

P.54A-49

.

.

DTC SET CONDITION

The combination meter communicates with the 
ABS-ECU through CAN bus lines. If it can not 
receive all the necessary signals from the ABS-ECU, 
DTC U1102 is set.

.

TECHNICAL DESCRIPTION (COMMENT)

CAUTION

If the ignition switch is turned to the ON position 
without starting the engine, DTC (past trouble) 
U1100, U1101 and U1102 may be set on the com-
bination meter after one minutes.

Current trouble

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

lines between the ABS-ECU and the combination 
meter, the power supply system to the ABS-ECU, 
the ABS-ECU itself, or the combination meter 
may be defective.

Past trouble

• Carry out diagnosis with particular emphasis on 

connector(s) or wiring harness in the CAN bus 
lines between the ABS-ECU and the combination 
meter, and the power supply system to the 
ABS-ECU. For diagnosis procedures, refer to 
"How to cope with past trouble" (Refer to GROUP 
00, How to Use Troubleshooting/Inspection Ser-
vice Points 

P.00-14

).

NOTE: For a past trouble, you may not find it by 
the MUT-III CAN bus diagnostics even if there is 
any failure in CAN bus lines. In this case, refer to 
GROUP 00, How to Use Troubleshooting/Inspec-
tion Service Points 

− How to Cope with Intermit-

tent Malfunction 

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 communica-
tion-linked ECUs (Refer to GROUP 54C, CAN 
bus line Diagnostics Flow 

P.54C-6

).

.

TROUBLESHOOTING HINTS

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

• The wiring harness or connectors may have 

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

• Malfunction of ABS-ECU

• Malfunction of combination meter 

DIAGNOSIS

Required Special Tools:

• 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 (Vehicles with CAN 

communication system)

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-56

STEP 1. Using diagnostic tool MB991958, diagnose the 
CAN bus line.
Use diagnostic tool MB991958 to diagnose the CAN bus lines.
(1) Connect diagnostic tool MB991958 to the data link 

connector.

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

Q: Is the check result satisfactory?

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

Diagnosis 

− Can Bus Diagnostic Chart 

P.54C-15

). On 

completion, go to Step 6.

STEP 2. Using diagnostic tool MB991958, read ABS 
diagnostic trouble code.
Check that the ABS-ECU sets a DTC.

Q: Is the DTC set?

YES : Refer to GROUP 35B, Diagnosis 

− Diagnostic 

Trouble Code Chart 

P.35B-9

.

NO :  Go to Step 3.

STEP 3. Using diagnostic tool MB991958, read the MPI 
diagnostic trouble code.
Check if the Engine ECU has set DTC U1102 (ABS-ECU 
time-out).

Q: Is the DTC set?

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

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-57

STEP 4. Recheck for diagnostic trouble code.
Recheck if the DTC is set.

1. Erase the DTC.
2. Turn the ignition switch to "ON" position.
3. Check if the DTC is set.

Q: Is the check result satisfactory?

YES : A poor connection, open circuit or other intermittent 

malfunction is present in the lines between the 
ABS-ECU and the combination meter (Refer to 
GROUP 00, How to Use Troubleshooting/Inspection 
Service Points 

− How to Cope with Intermittent 

Malfunction 

P.00-14

).

NO :  Replace ABS-ECU and then go to step 6.

35DB090A

A