Mitsubishi Evolution X. Manual - part 1153

TROUBLESHOOTING

TSB Revision

LOCAL INTERCONNECT NETWORK (LIN)

54B-5

2. Turn the ignition switch to the "ON" position.
3. Select "System select" from the start-up screen.
4. Select "From 2006 MY" of "Model Year." When the "Vehicle 

Information" is displayed, check the contents.

5. Select "ETACS" from "System List", and press the "OK" 

button.
NOTE: When the "Loading Option Setup" list is displayed, 
check the applicable item.

6. Select "Diagnostic Trouble Code."
7. If a DTC is set, it is shown.
8. Choose "Erase DTCs" to erase the DTC.

DIAGNOSTIC TROUBLE CODE CHART

M1545100200245

Diagnostic 
trouble 
code No.

Diagnostic item

Reference 
page

U0169

Sunroof LIN timeout <Vehicles with sunroof>

P.54B-6

U0215

P/W SW (DR) LIN timeout

P.54B-9

U0231

Rain light sensor LIN timeout <Vehicles with auto light function>

P.54B-12

U1109

Column SW LIN timeout

P.54B-14

U150B

Column SW checksum error

P.54B-16

U150C

P/W SW (DR) checksum error

P.54B-17

U1511

Sunroof checksum error <Vehicles with sunroof>

P.54B-18

U1512

Rain light sensor checksum error <Vehicles with auto light function>

P.54B-19

U1514

Bit error (LIN)

P.54B-20

U1515

No-Bus activity error (LIN)

P.54B-22

TROUBLESHOOTING

TSB Revision

LOCAL INTERCONNECT NETWORK (LIN)

54B-6

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC U0169: Sunroof LIN timeout <Vehicles with sunroof>

CAUTION

Before replacing the ECU, ensure that the communication circuit is normal.

Sunroof Motor Assembly LIN Communication Circuit

ETACS-
ECU

INTERFACE
CIRCUIT

LIN DRIVE
CIRCUIT

INPUT CIRCUIT

SUNROOF
MOTOR
ASSEMBLY

AC708972AI

Connector: C-316

Junction block

AC708954 AE

Connector: D-06

D-06 (GR)

.

TROUBLE JUDGMENT

The ETACS-ECU receives signal from the sunroof 
motor assembly (sunroof-ECU). If signal cannot be 
received at all, DTC U0169 will be set.

.

TECHNICAL DESCRIPTION (COMMENT)

Current trouble

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

lines between the sunroof motor assembly and 
the ETACS-ECU, the power supply system of the 
sunroof motor assembly, or the sunroof motor 
assembly itself may be defective.

Past trouble

• If DTC U0169 is stored as a past trouble, carry 

out diagnosis with particular emphasis on wiring 
and connector(s) in the LIN bus line between the 
sunroof motor assembly and the ETACS-ECU, 
and the power supply system of the sunroof 
motor assembly.

.

TROUBLESHOOTING HINTS

• The sunroof motor assembly may be defective.

• The wiring harness or connectors may have 

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

TROUBLESHOOTING

TSB Revision

LOCAL INTERCONNECT NETWORK (LIN)

54B-7

DIAGNOSIS

Required Special Tools:

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

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

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

STEP 1. Check ETACS-ECU connector C-316 and sunroof 
motor assembly connector D-06 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Are ETACS-ECU connector C-316 and sunroof motor 

assembly connector D-06 in good condition?
YES : Go to Step 2.
NO :  Repair or replace the damaged component(s).

STEP 2. Check the wiring harness between ETACS-ECU 
connector C-316 (terminal 1) and sunroof motor assembly 
connector D-06 (terminal 7).
Q: Is the wiring harness between ETACS-ECU connector 

C-316 (terminal 1) and sunroof motor assembly 
connector D-06 (terminal 7) in good condition?
YES : Go to Step 3.
NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary.

TROUBLESHOOTING

TSB Revision

LOCAL INTERCONNECT NETWORK (LIN)

54B-8

STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

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. Refer to "How to connect the 

Scan Tool (M.U.T.-III) 

P.54B-4

."

(2) Erase the DTC.
(3) Turn the ignition switch to the "ON" position.
(4) Check if the DTC is set.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace the sunroof motor assembly.
NO :  A poor connection, open circuit or other intermittent 

malfunction is present in the LIN bus lines between 
the sunroof motor assembly and the ETACS-ECU 
(Refer to GROUP 00, How to Cope with Intermittent 
Malfunction 

P.00-15

).