Mitsubishi Lancer (4A9 engine). Manual — part 238
SPECIAL TOOLS
LOCAL INTERCONNECT NETWORK (LIN)
54B-3
SPECIAL TOOLS
M1545100100163
Tool
Number
Name
Use
MB991910
MB991826
MB991955
MB991911
MB991824
MB991827
MB991825
a
b
c
d
e
f
DO NOT USE
MB991955
a. MB991824
b. MB991827
c. MB991910
d. MB991911
e. MB991825
f. MB991826
M.U.T.-III sub-
assembly
a. Vehicle
Communication
Interface (V.C.I.)
b. M.U.T.-III USB
cable
c. M.U.T.-III main
harness A
(Vehicles with CAN
communication
system)
d. M.U.T.-III main
harness B
(Vehicles without
CAN
communication
system)
e. M.U.T.-III measure
adapter
f. M.U.T.-III trigger
harness
For vehicles with CAN
communication, use M.U.T.-III
main harness A to send
simulated vehicle speed. If you
connect M.U.T.-III main harness
B instead, the CAN
communication does not
function correctly.
LIN communication line check
(service data and diagnosis
codes)
TROUBLESHOOTING
DIAGNOSIS CODE CHART
M1545100200739
CAUTION
Diagnosis
code No.
Diagnostic item
Reference
page
U0169
Sunroof LIN timeout <Vehicles with sunroof>
U0215
P/W SW (DR) LIN timeout
U0231
Lighting control sensor LIN timeout <Vehicles with auto lamp>
U1006
Security alarm siren LIN timeout <Vehicles with security alarm sensor>
TROUBLESHOOTING
LOCAL INTERCONNECT NETWORK (LIN)
54B-4
DIAGNOSIS FUNCTION
M1545104200076
HOW TO READ DIAGNOSIS CODE
Refer to GROUP 00
− Diagnosis function .
HOW TO ERASE DIAGNOSIS CODE
Refer to GROUP 00
− Diagnosis function .
U1007
Security alarm sensor LIN timeout <Vehicles with security alarm sensor>
U1109
Column SW LIN timeout
U150B
Column SW checksum error
U150C
P/W SW (DR) checksum error
U1511
Sunroof checksum error <Vehicles with sunroof>
U1512
Lighting control sensor checksum error <Vehicles with auto lamp>
U1514
Bit error (LIN)
U1515
No-Bus activity error (LIN)
U1539
Security alarm siren LIN checksum error <Vehicles with security alarm
sensor>
U1540
Security alarm SNSR.LIN checksum error <Vehicles with security alarm
sensor>
Diagnosis
code No.
Diagnostic item
Reference
page
TROUBLESHOOTING
LOCAL INTERCONNECT NETWORK (LIN)
54B-5
DIAGNOSIS CODE PROCEDURES
Code No.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
FUSE
15
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple SI : Silver
ACA00886
AC
Connector: C-316 <LHD>
ETACS-ECU
ACA00887
AC
Connector: C-316 <RHD>
ETACS-ECU
AC612722
AL
Connector: D-06
D-06 (GR)
TROUBLESHOOTING
LOCAL INTERCONNECT NETWORK (LIN)
54B-6
JUDGEMENT CRITERIA
The ETACS-ECU will set diagnosis code No. U0169
when no signals are received from the sunroof motor
assembly.
PROBABLE CAUSES
• Faulty sunroof motor assembly
• Malfunction of the LIN bus
DIAGNOSIS PROCEDURE
STEP 1. Connector check: C-316 ETACS-ECU
connector, D-06 sunroof motor assembly
connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
STEP 2. Resistance measurement at the D-06
sunroof motor assembly connector
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Measure the resistance between the D-06
sunroof motor assembly connector terminal No. 2
and the body earth.
OK: Continuity exists (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Go to Step 3.
STEP 3. Wiring harness check from D-06 sunroof
motor assembly connector terminal No. 2 to
body earth
Check the earth wires for open circuit.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
Malfunction ).
NO :
Repair the wiring harness.
STEP 4. Voltage measurement at the D-06
sunroof motor assembly connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Measure the voltage between the D-06 sunroof
motor assembly connector terminal No. 6 and the
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Go to Step 5.
STEP 5. Wiring harness check between the D-06
sunroof motor assembly connector terminal No.
6 and the C-316 ETACS-ECU connector terminal
No. 2
Check the power supply line for open circuit and
short circuit.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
use Troubleshooting/inspection Service
Points
− How to Cope with Intermittent
Malfunction ).
NO :
Repair the wiring harness.
STEP 6. Check the wiring harness wires between
C-316 ETACS-ECU connector terminal No. 1 and
D-06 sunroof motor assembly connector terminal
No. 7.
Check the communication lines for open circuit.
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Repair the wiring harness.
STEP 7. Check whether the diagnosis code is
reset.
Check again if the diagnosis code is set to the
ETACS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the LOCK (OFF)
position to the ON position.
(3) Check if diagnosis code is set.
Q: Is the diagnosis code set?
YES :
Replace the sunroof motor assembly.
NO :
A poor connection, open circuit, or other
intermittent malfunctions in the LIN bus lines
between the sunroof motor assembly and
the ETACS-ECU (Refer to GROUP 00
−
How to Cope with Intermittent Malfunction ).
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