Mitsubishi Grandis. Manual — part 264
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-518
Inspection Procedure Q-15: The driver's door lock actuator switch signal is not received. <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 driver's door lock actuator is
used to operate the functions below. If the signal is
abnormal, these functions will not work normally.
• Central door locking
• Interior lamps
POSSIBLE CAUSES
• Malfunction of the front door lock actuator (RH)
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
ETACS-ECU
DOOR LOCK
ACTUATOR
(FRONT: RH)
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
Door Lock Actuator Input Circuit <RHD>
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-519
DIAGNOSIS PROCEDURE
Step 1. Connector check: F-17 front door lock
actuator (RH) connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
Step 2. Check the front door lock actuator (RH).
Refer to GROUP 42
− Door
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the front door lock actuator (RH).
Step 3. Resistance measurement at the F-17 front
door lock actuator (RH) connector
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Resistance between F-17 front door lock actuator
(RH) 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-17
front door lock actuator (RH) 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 :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Repair the wiring harness.
AC312089
AB
Connector: F-17
Harness side
5
6
4
2
3
1
<RHD>
AC312089
AB
Connector: F-17
Harness side
5
6
4
2
3
1
<RHD>
AC312730AG
Connector F-17
(Harness side)
5
6
4
2
3
1
AC312089
AB
Connector: F-17
Harness side
5
6
4
2
3
1
<RHD>
AC312043
Connector: C-14 <RHD>
AG
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-520
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-17 front
door lock actuator (RH) connector terminal Nos.1
and 2 to C-220 ETACS-ECU connector terminal
Nos.35 and 36.
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.
AC312047
Connector: C-220
Junction block (Rear view)
AC
<RHD>
Harness side
AC312089
AB
Connector: F-17
Harness side
5
6
4
2
3
1
<RHD>
AC312047
Connector: C-220
Junction block (Rear view)
AC
<RHD>
Harness side
AC312043
Connector: C-14 <RHD>
AG
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-521
Step 7. ETACS switch data by using the SWS
monitor
Check the input signal from the driver's door lock
actuator switch.
• Driver's door lock actuator switch: LOCK →
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.
Inspection Procedure Q-16: The passenger’s door lock key switch signal is not detected. <LH 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.
Item No. Item name
Normal
conditions
Item 21
DR DOR LCK SW
ON
→ OFF
Item 22
DR DOR ULK SW
OFF
→ ON
Door Lock Key Cylinder Switch Input Circuit <LHD>
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
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