Mitsubishi Outlander GS45X. Manual - part 1253

TROUBLESHOOTING

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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. Ensure that the ignition switch is at the "LOCK" (OFF) 

position.

2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824 

and the personal computer.

4. Connect special tool MB991910 to special tool MB991824.
5. Connect special tool MB991910 to the data link connector.
6. Turn the power switch of special tool MB991824 to the "ON" 

position.
NOTE: When special tool MB991824 is energized, special 
tool MB991824 indicator light will be illuminated in a green 
color.

7. Start the M.U.T.-III system on the personal computer.
NOTE: Disconnecting scan tool MB991958 is the reverse of the 
connecting sequence, making sure that the ignition switch is at 
the "LOCK" (OFF) position.

HOW TO READ AND ERASE DIAGNOSTIC 
TROUBLE CODES

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)

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.
NOTE: If the battery voltage is low, diagnostic trouble codes will 
not be set. Check the battery if scan tool MB991958 does not 
display.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "System select" from the start-up screen.
4. Select "From 2006 MY" under "Model Year". Check that 

"Vehicle Information" contents are correct.

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

button.
NOTE: If "Loading Option Setup" list is shown, click appro-
priate box.

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

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

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DIAGNOSTIC TROUBLE CODE CHART

M1545100200580

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC U0169: Sunroof LIN timeout <Vehicles with sunroof>

DTC No.

Diagnostic item

Reference 
page

U0169

Sunroof LIN timeout <Vehicles with sunroof>

P.54B-6

U0215

P/W SW (DR) LIN timeout

P.54B-10

U0231

Lighting control sensor LIN timeout <Vehicles with auto light function>

P.54B-15

U1109

Column SW LIN timeout

P.54B-19

U1006

Theft-alarm siren LIN timeout <Vehicles with theft-alarm sensor>

P.54B-23

U1007

Theft-alarm sensor LIN timeout <Vehicles with theft-alarm sensor>

P.54B-30

U150B

Column SW checksum error

P.54B-34

U150C

P/W SW (DR) checksum error

P.54B-35

U1511

Sun roof checksum error <Vehicles with sunroof>

P.54B-36

U1512

Lighting control sensor checksum error <Vehicles with auto light function>

P.54B-37

U1514

Bit error (LIN)

P.54B-38

U1515

No-Bus activity error (LIN)

P.54B-40

Sunroof Motor Assembly LIN Communication Circuit

ETACS-
ECU

INTERFACE
CIRCUIT

LIN DRIVE
CIRCUIT

INPUT CIRCUIT

SUNROOF
MOTOR
ASSEMBLY

FUSE     

15

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CAUTION

Before replacing the ECU, ensure that the com-
munication circuit is normal.

.

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. For diagnosis procedures, refer 
to GROUP 00, How to Use Troubleshoot-
ing/Inspection Service Points 

− How to Treat Past 

Trouble 

P.00-17

.

.

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.

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-04 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-04 in good condition?
YES : Go to Step 2.
NO :  Repair or replace the damaged component(s). Go to 

Step 7.

ACA02655 AN

Connector: C-316

AC702816AN

Connector: D-04

D-04 (GR)

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STEP 2. Check the ground circuit to the sunroof motor 
assembly. Measure the resistance at sunroof motor 
assembly connectors D-04.
(1) Disconnect sunroof motor assembly connector D-04 and 

measure the resistance available at the wiring harness side 
of the connector.

(2) Measure the resistance value between sunroof motor 

assembly connector D-04 terminal 2 and ground.

• The resistance should be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 4.
NO :  Go to Step 3.

STEP 3. Check the wiring harness between sunroof motor 
assembly connector D-04 (terminal 2) and the ground.

• Check the ground wires for open circuit.

Q: Is the wiring harness between sunroof motor assembly 

connector D-04 (terminal 2) and the ground in good 
condition?
YES : No action is necessary and testing is complete.
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.

STEP 4. Check the battery power supply circuit to the 
sunroof motor assembly. Measure the voltage at sunroof 
motor assembly connector D-04.
(1) Disconnect sunroof motor assembly connector D-04 

measure the voltage available at the wiring harness side of 
the connector.

(2) Measure the voltage between sunroof motor assembly 

connector D-04 terminal 6 and ground.

• The voltage should measure approximately 12 volts 

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery 

positive voltage)?
YES : Go to Step 6.
NO :  Go to Step 5.

AC608255 DC

Connector D-04
(Harness side)

AC702831CY

Connector D-04
(Harness side)