Mitsubishi Lancer (4A9 engine). Manual — part 239
TROUBLESHOOTING
LOCAL INTERCONNECT NETWORK (LIN)
54B-7
Code No.U0215 P/W SW (DR) LIN timeout
CAUTION
Before replacing the ECU, ensure that the communication circuit is normal.
Power Window Main Switch LIN Communication Circuit
ETACS-
ECU
INTERFACE
CIRCUIT
LIN DRIVE
CIRCUIT
CPU
POWER WINDOW
MAIN SWITCH
POWER
WINDOW
RELAY
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
RHD
:
LHD
:
NOTE
ACA00886
AB
Connectors: C-301, C-315 <LHD>
ETACS-ECU
C-315
C-301
ACA00887
AB
Connectors: C-301, C-315 <RHD>
ETACS-ECU
C-315
C-301
AC612730
Connector: E-14 <LHD>
AH
AC612735
Connector:E-14 <RHD>
AF
TROUBLESHOOTING
LOCAL INTERCONNECT NETWORK (LIN)
54B-8
JUDGEMENT CRITERIA
The ETACS-ECU will set diagnosis code No. U0215
when no signals are received from the power window
main switch.
PROBABLE CAUSES
• Faulty power window main switch
• Malfunction of the LIN bus
DIAGNOSIS PROCEDURE
STEP 1. Connector check: C-301 and C-315
ETACS-ECU connector, E-14 power window main
switch connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
STEP 2. Resistance measurement at the E-14
power window main switch connector
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Measure the resistance between the E-14 power
window main switch connector terminal No. 10
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 E-14 power
window main switch connector terminal No. 10 to
body earth
NOTE: Prior to the wiring harness inspection, check
intermediate connector C-125 <LHD> or C-111
<RHD>, and repair if necessary.
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 E-14 power
window main switch connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Ignition switch: ON position
(3) Measure the voltage between the E-14 power
window main switch connector terminal No. 4 and
the body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Go to Step 5.
TROUBLESHOOTING
LOCAL INTERCONNECT NETWORK (LIN)
54B-9
STEP 5. Wiring harness check between the E-14
power window main switch connector terminal
No. 4 and the C-315 ETACS-ECU connector
terminal No. 8
Check the power supply line for open circuit and
short circuit.
NOTE: Prior to the wiring harness inspection, check
intermediate connector C-125 <LHD> or C-111
<RHD>, and repair if necessary.
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-301 ETACS-ECU connector terminal No. 1 and
E-14 power window main switch connector
terminal No. 7.
Check the communication lines for open circuit.
NOTE: Prior to the wiring harness inspection, check
intermediate connector C-126 <LHD> or C-112
<RHD>, and repair if necessary.
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 "LOCK" (OFF)
position to "ON" position.
(3) Check if diagnosis code is set.
Q: Is the diagnosis code set?
YES :
Replace the power window main switch.
NO :
A poor connection, open circuit, or other
intermittent malfunctions in the LIN bus lines
between the power window main switch and
the ETACS-ECU (Refer to GROUP 00
−
How to Cope with Intermittent Malfunction ).
TROUBLESHOOTING
LOCAL INTERCONNECT NETWORK (LIN)
54B-10
Code No.U0231 Lighting control sensor LIN timeout <Vehicles with auto lamp>
CAUTION
Before replacing the ECU, ensure that the communication circuit is normal.
Lighting Control Sensor LIN Communication Circuit
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
ETACS-
ECU
INTERFACE
CIRCUIT
LIN DRIVE
CIRCUIT
FUSE
8
LIGHTING
CONTROL
SENSOR
ACA00886
AC
Connector: C-316 <LHD>
ETACS-ECU
ACA00887
AC
Connector: C-316 <RHD>
ETACS-ECU
AC612722
AM
Connector: D-02
JUDGEMENT CRITERIA
The ETACS-ECU will set diagnosis code No. U0231
when no signals are received from the lighting con-
trol sensor.
PROBABLE CAUSES
• Faulty lighting control sensor
• Malfunction of the LIN bus
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