Mitsubishi Grandis. Manual — part 123
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-489
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.33
and 34.
NOTE:
Prior to the wiring harness inspection, check
intermediate connector C-27, 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.
Step 7. Retest the system.
Check that the passenger's door key switch signal is
received normally.
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Cope with Intermittent
Malfunction
).
NO :
Replace the ETACS-ECU.
AC312091
AB
Connector: F-23 <RHD>
Harness side
AC312047
Connector: C-220
Junction block (Rear view)
AC
<RHD>
Harness side
AC312031
AH
Connector: C-27 <RHD>
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-490
Inspection Procedure Q-17: The tailgate key switch signal is not detected.
CAUTION
Whenever the ECU is replaced, ensure that the
input signal circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
Input signal from the tailgate 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 tailgate key switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSTIC PROCEDURE
Step 1. Connector check: G-16 tailgate key
switch connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
TAILGATE
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
Tailgate Key Switch Input Circuit
AC312078
Connector: G-16
Harness side
AD
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-491
Step 2. Check the tailgate key switch.
Refer to GROUP 42
− Tailgate
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the tailgate lock key switch.
Step 3. Resistance measurement at the G-16
tailgate key switch connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Resistance between G-16 tailgate key switch
connector terminal No.2 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 G-16
tailgate key switch connector terminal No.2 and
body earth.
NOTE:
Prior to the wiring harness inspection, check
intermediate connector G-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.
AC312078
Connector: G-16
Harness side
AD
AC312730AK
Connector G-16
(Harness side)
AC312078
Connector: G-16
Harness side
AD
AC312078
Connector: G-14
AC
2
1
4
3
13
8
11
10
5
7
12
6
14
9
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-492
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.
AC312037
Connector: C-220
Junction block (Rear view)
AC
<LHD>
Harness side
AC312047
Connector: C-220
Junction block (Rear view)
AC
<RHD>
Harness side
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