Mitsubishi L200. Manual — part 802
DIAGNOSIS CODE PROCEDURES
LOCAL INTERCONNECT NETWORK (LIN)
54B-19
STEP 5. Wiring harness check between the E-03
power window main switch connector terminal
No. 6 and the power window relay.
AC509952
Connector: E-03
AT
Harness side
Check the power supply line for open circuit and
short circuit.
NOTE:
AC901157
AB
Connectors: C-32, C-33, C-134 <LHD>
C-33
C-32
C-32 (GR)
C-33
C-134
C-134
AC903865
Connectors: C-32, C-33 <RHD>
AE
C-33
C-32 (GR)
C-32
C-33
AC903868
AG
Connector: C-122 <RHD>
Harness side
Prior to the wiring harness inspection, check interme-
diate connectors C-33, C-134 <LHD> or C-122
<RHD> and joint connector C-32, and repair if nec-
essary.
Q: Is the check result normal?
DIAGNOSIS CODE PROCEDURES
LOCAL INTERCONNECT NETWORK (LIN)
54B-20
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 between C-219
ETACS-ECU connector terminal No.54 and E-03
power window main switch connector terminal
No.4.
AC509934
Connector: C-219 <LHD>
AD
C-219 (GR)
Harness side
Junction block
AC509952
Connector: E-03
AT
Harness side
NOTE:
AC903856
Connectors: C-133, C-138 <LHD>
C-133
AH
C-138 (L)
C-133
C-138
AC903868
Connectors: C-121, C-138 <RHD>
C-121
AH
C-138 (L)
C-121
C-138
Prior to the wiring harness inspection, check joint
connector C-138 and intermediate connector C-133
<LHD> or C-121 <RHD>, and repair if necessary.
• Check the communication line for open circuit.
Q: Is the check result normal?
DIAGNOSIS CODE PROCEDURES
LOCAL INTERCONNECT NETWORK (LIN)
54B-21
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) On completion, check that the diagnosis code is
reset.
Q: Is the diagnosis code set?
YES :
Replace the power window main switch.
NO :
A poor connection, open circuit or other
intermittent malfunction is present in the LIN
bus lines between the power window main
switch and the ETACS-ECU (Refer to
GROUP 00, How to Use Troubleshooting/
Inspection Service Points
− How to Cope
with Intermittent Malfunctions ).
Code No.U1509: Power window sub switch (AS) time-out
LIN
INTERFACE
POWER WINDOW
SUB SWITCH
(FRONT: RH)
RELAY
BOX
POWER WINDOW
RELAY
Front Power Window Sub Switch 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
CPU
NOTE
LHD
:
RHD
:
ETACS-ECU
TROUBLE JUDGEMENT
The ETACS-ECU receives signal from the front
power window sub switch. If signal cannot be
received at all, diagnosis code No.U1509 will be set.
DIAGNOSIS CODE PROCEDURES
LOCAL INTERCONNECT NETWORK (LIN)
54B-22
COMMENT ON TROUBLE SYMPTOM
The M.U.T.-III shows a diagnosis code status as
active.
• Connector(s) or wiring harness in the LIN bus
lines between the front power window sub switch
and the ETACS-ECU, the power supply system of
the front power window sub switch, or the front
power window sub switch itself may be defective.
The M.U.T.-III shows a diagnosis code status as
stored.
• If diagnosis code No.U1509 is stored as a past
trouble, carry out diagnosis with particular
emphasis on wiring and connector(s) in the LIN
bus line between the front power window sub
switch and the ETACS-ECU, and the power sup-
ply system of the front power window sub switch.
For diagnosis procedures, refer to GROUP 00,
How to Use Troubleshooting/Inspection Service
Points
− How to Treat Past Trouble .
PROBABLE CAUSES
• Malfunction of the front power window sub switch
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. Connector check: C-219 ETACS-ECU
connector, E-26 front power window sub switch
connector
AC509934
Connector: C-219 <LHD>
AD
C-219 (GR)
Harness side
Junction block
AC509954
Connector: E-26
AS
Harness side
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
STEP 2. Resistance measurement at the E-26
front power window sub switch connector
AC509954
Connector: E-26
AS
Harness side
(1) Disconnect the connector, and measure at the
wiring harness side.
AC310506KO
Connector E-26
(Harness side)
(2) Measure the resistance between the E-26 front
power window sub switch connector terminal No.
1 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.
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