Mitsubishi Grandis. Manual — part 265
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-522
POSSIBLE CAUSES
• Malfunction of the front passenger's door lock key
switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Connector check: F-23 door key switch
connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
Step 2. Check the door key switch.
Refer to GROUP 42
− Door
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the door key switch.
Step 3. Resistance measurement at the F-23 door
key switch connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Resistance between F-23 door key switch
connector terminal No.3 and body earth
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 4.
Step 4. Check the wiring harness between F-23
door key switch connector terminal No.3 and
body earth.
NOTE:
Prior to the wiring harness inspection, check
intermediate connector C-14, and repair if necessary.
• Check the earth wires for open circuit.
Q: Is the check result normal?
YES :
Intermittent malfunction. (Refer to GROUP
00
− How to Cope with Intermittent
Malfunction
).
NO :
Repair the wiring harness.
AC312085
Connector: F-23 <LHD>
Harness side
AB
AC312085
Connector: F-23 <LHD>
Harness side
AB
AC312730AI
Connector F-23
(Harness side)
AC312085
Connector: F-23 <LHD>
Harness side
AB
AC312033
Connector: C-14 <LHD>
AC
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-523
Step 5. Connector check: C-220 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the defective connector.
Step 6. Check the wiring harness from F-23 door
key switch connector terminal Nos.1 and 2 to
C-220 ETACS-ECU connector terminal Nos.34
and 33.
NOTE:
Prior to the wiring harness inspection, check
intermediate connector C-14, and repair if necessary.
• Check the input line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Repair the wiring harness.
AC312037
Connector: C-220
Junction block (Rear view)
AC
<LHD>
Harness side
AC312085
Connector: F-23 <LHD>
Harness side
AB
AC312037
Connector: C-220
Junction block (Rear view)
AC
<LHD>
Harness side
AC312033
Connector: C-14 <LHD>
AC
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-524
Step 7. ETACS switch data by using the SWS
monitor
Check the input signal from the passenger’s door
lock key switch.
• passenger’s door lock key cylinder: Neutral to
lock
• Passenger’s door lock key cylinder: Neutral to
unlock
OK: Normal conditions are displayed for all
the items.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Replace the ETACS-ECU.
Item No.
Item name
Normal
condition
Item 26
CNTR DOOR LCK
ON (only
when
operated
to lock)
Item 27
CNTR DOOR ULCK
OFF
Item No.
Item name
Normal
condition
Item 26
CNTR DOOR LCK
OFF
Item 27
CNTR DOOR ULCK
ON (only
when
operated
to unlock)
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-525
Inspection Procedure Q-16: The passenger’s door lock key switch signal is not detected. <RH drive
vehicles>
CAUTION
Whenever the ECU is replaced, ensure that the
input signal circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
Input signal from the front passenger's door lock key
switch is used to operate the central door locking
function. If the signal is abnormal, the central door
locking function will not work normally.
POSSIBLE CAUSES
• Malfunction of the front passenger's door lock key
switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Connector check: F-23 door key switch
connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
Door Lock Key Cylinder Switch Input Circuit <RHD>
DOOR KEY
SWITCH
ETACS-ECU
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
AC312091
AB
Connector: F-23 <RHD>
Harness side
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