Mitsubishi Outlander GS45X. Manual — part 1256
TROUBLESHOOTING
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LOCAL INTERCONNECT NETWORK (LIN)
54B-17
STEP 3. Check the wiring harness between lighting control
sensor connector D-39 (terminal 2) and the ground.
• Check the ground wires for open circuit.
Q: Is the wiring harness between lighting control sensor
connector D-39 (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
lighting control sensor. Measure the voltage at lighting
control sensor connector D-39.
(1) Disconnect lighting control sensor connector D-39 measure
the voltage available at the wiring harness side of the
connector.
(2) Measure the voltage between lighting control sensor
connector D-39 terminal 2 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.
STEP 5. Check the wiring harness between ETACS-ECU
connector C-317 (terminal 10) and lighting control sensor
connector D-39 (terminal 1).
• Check the power supply line (battery supply) for open circuit
and short circuit.
Q: Is the wiring harness between ETACS-ECU connector
C-317 (terminal 10) and lighting control sensor
connector D-39 (terminal 1) 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.
AC608254 EZ
Connector D-39
(Harness side)
TROUBLESHOOTING
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LOCAL INTERCONNECT NETWORK (LIN)
54B-18
STEP 6. Check the wiring harness between ETACS-ECU
connector C-316 (terminal 1) and lighting control sensor
connector D-39 (terminal 3).
• Check the communication line for open circuit.
Q: Is the wiring harness between ETACS-ECU connector
C-316 (terminal 1) and lighting control sensor connector
D-39 (terminal 3) in good condition?
YES : Go to Step 7.
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. Go to Step 7.
STEP 7. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
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)
(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 lighting control sensor.
NO : A poor connection, open circuit or other intermittent
malfunction is present in the LIN bus lines between
the lighting control sensor and the ETACS-ECU
(Refer to GROUP 00, How to Cope with Intermittent
Malfunction
).
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
TROUBLESHOOTING
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LOCAL INTERCONNECT NETWORK (LIN)
54B-19
DTC U1109: Column SW LIN timeout
CAUTION
Before replacing the ECU, ensure that the com-
munication circuit is normal.
.
TROUBLE JUDGMENT
The ETACS-ECU receives signal from the column
switch. If signal cannot be received at all, DTC
U1109 will be set.
.
TECHNICAL DESCRIPTION (COMMENT)
Current trouble
• Connector(s) or wiring harness in the LIN bus
lines between the column switch and the
ETACS-ECU, the power supply system of the col-
umn switch, or the column switch itself may be
defective.
Past trouble
• If DTC U1109 is stored as a past trouble, carry
out diagnosis with particular emphasis on wiring
and connector(s) in the LIN bus line between the
column switch and the ETACS-ECU, and the
power supply system of the column switch. For
diagnosis procedures, refer to GROUP 00, How
to Use Troubleshooting/Inspection Service Points
− How to Treat Past Trouble
.
.
TROUBLESHOOTING HINTS
• The column switch may be defective.
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector.
Column Switch LIN Communication Circuit
ETACS-
ECU
INTERFACE
CIRCUIT
LIN DRIVE
CIRCUIT
COLUMN
SWITCH
COLUMN-ECU
FUSE
8
AC702922 AE
Connector: C-212
ACA02655AQ
Connectors: C-301, C-317
C-301
C-317
TROUBLESHOOTING
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LOCAL INTERCONNECT NETWORK (LIN)
54B-20
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 connectors C-301 and C-317
and column switch connector C-212 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are ETACS-ECU connectors C-301 and C-317 and
column switch connector C-212 in good condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Go to
Step 7.
STEP 2. Check the ground circuit to the column switch.
Measure the resistance at column switch connector C-212.
(1) Disconnect column switch connector C-212 and measure
the resistance available at the wiring harness side of the
connector.
(2) Measure the resistance value between column switch
connector C-212 terminal 4 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 column switch
connector C-212 (terminal 4) and the ground.
• Check the ground wires for open circuit.
Q: Is the wiring harness between column switch connector
C-212 (terminal 4) 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.
AC702818 EC
Connector C-212
(Harness side)
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