Mitsubishi L200. Manual — part 799
DIAGNOSIS CODE PROCEDURES
LOCAL INTERCONNECT NETWORK (LIN)
54B-7
DIAGNOSIS PROCEDURE
STEP 1. Connector check: C-219 ETACS-ECU
connector, C-302 column switch connector
AC509934
Connector: C-219 <LHD>
AD
C-219 (GR)
Harness side
Junction block
AC509945AB
Harness side
Connector: C-302 <LHD>
10
5
6
7
9 8
3
4
2 1
AC509946AB
Harness side
Connector: C-302 <RHD>
10
5
6
7
9 8
3
4
2 1
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector. Go to Step
7.
STEP 2. Resistance measurement at the C-302
column switch connector
AC509945AB
Harness side
Connector: C-302 <LHD>
10
5
6
7
9 8
3
4
2 1
AC509946AB
Harness side
Connector: C-302 <RHD>
10
5
6
7
9 8
3
4
2 1
(1) Disconnect the connector, and measure at the
wiring harness side.
AC310506KM
Connector C-302
(Harness side)
(2) Measure the resistance between the C-302
column switch connector terminal No. 4 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.
DIAGNOSIS CODE PROCEDURES
LOCAL INTERCONNECT NETWORK (LIN)
54B-8
STEP 3. Check the wiring harness between C-302
column switch connector terminal No. 4 to body
earth
AC509945AB
Harness side
Connector: C-302 <LHD>
10
5
6
7
9 8
3
4
2 1
AC509946AB
Harness side
Connector: C-302 <RHD>
10
5
6
7
9 8
3
4
2 1
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 C-302
column switch connector.
AC509945AB
Harness side
Connector: C-302 <LHD>
10
5
6
7
9 8
3
4
2 1
AC509946AB
Harness side
Connector: C-302 <RHD>
10
5
6
7
9 8
3
4
2 1
(1) Disconnect the connector, and measure at the
wiring harness side.
AC310507MD
Connector C-302
(Harness side)
(2) Measure the voltage between the C-302 column
switch connector terminal No. 1 and the body
earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Go to Step 5.
DIAGNOSIS CODE PROCEDURES
LOCAL INTERCONNECT NETWORK (LIN)
54B-9
STEP 5. Check the wiring harness between C-302
column switch connector terminal No. 1 and the
C-209 junction block connector terminal No. 2
AC509934
Connector: C-209 <LHD>
Junction block (Front view)
CT
Harness side
AC509945AB
Harness side
Connector: C-302 <LHD>
10
5
6
7
9 8
3
4
2 1
AC509946AB
Harness side
Connector: C-302 <RHD>
10
5
6
7
9 8
3
4
2 1
Check the power supply line for open circuit and
short circuit.
NOTE:
AC903853
Connector: C-132 <LHD>
AB
C-132 (GR)
AC903865
Connector: C-132 <RHD>
AB
C-132 (GR)
Prior to the wiring harness inspection, check joint
connector C-132, 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.
DIAGNOSIS CODE PROCEDURES
LOCAL INTERCONNECT NETWORK (LIN)
54B-10
STEP 6. Check the wiring harness between C-219
ETACS-ECU connector terminal No.54 and C-302
column switch connector terminal No.3.
AC509934
Connector: C-219 <LHD>
AD
C-219 (GR)
Harness side
Junction block
AC509945AB
Harness side
Connector: C-302 <LHD>
10
5
6
7
9 8
3
4
2 1
AC509946AB
Harness side
Connector: C-302 <RHD>
10
5
6
7
9 8
3
4
2 1
Check the communication line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Repair the wiring harness. Go to Step 7.
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) On completion, check that the diagnosis code is
reset.
Q: Is the diagnosis code set?
YES :
Replace the lighting switch.
NO :
A poor connection, open circuit or other
intermittent malfunction is present in the LIN
bus lines between the column-ECU and the
ETACS-ECU (Refer to GROUP 00, How to
Use Troubleshooting/Inspection Service
Points
− How to Cope with Intermittent
Malfunctions ).
Code No.U1504: Lighting control sensor LIN timeout <Vehicles with auto lamp>
NOTE: When the diagnosis codes relating to the LIN
communication error are set, make sure of the vehi-
cle equipment. When the vehicle is not equipped with
the system the ETACS-ECU communicates to, the
diagnosis code is always set. This is not abnormal.
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