Mitsubishi Grandis. Manual — part 115
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-457
Step 10. Retest the system.
Check that each switch signal is received by
operating the sunroof switch.
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 sunroof motor assembly.
Inspection Procedure Q-11: The key reminder switch signal is not received.
CAUTION
Whenever the ECU is replaced, ensure that the
input signal circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
Input signal from the key reminder switch is used to
operate the functions below. If the signal is abnormal,
these functions will not work normally.
• Key reminder function
• Keyless entry system
• Ignition key cylinder illumination lamp
• Interior lamps
POSSIBLE CAUSES
• Malfunction of the key reminder switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
ETACS-
ECU
KEY
REMINDER
SWITCH
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
WHEN REMOVING
KEY: ON
Key Reminder Switch Input Circuit
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-458
DIAGNOSTIC PROCEDURE
Step 1. Connector check: C-308 key reminder
switch connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
Step 2. Check the key reminder switch.
Refer to GROUP 54A
− Ignition switch
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the key reminder switch.
Step 3. Resistance measurement at the C-308 key
reminder switch connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Resistance between C-308 key reminder switch
connector terminal No.4 and body earth
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 4.
AC312039
2
7 6
1
3
5 4
Connector: C-308 <LHD>
AB
Harness side
AC312049
2
7 6
1
3
5 4
Connector: C-308 <RHD>
AB
Harness side
AC312039
2
7 6
1
3
5 4
Connector: C-308 <LHD>
AB
Harness side
AC312049
2
7 6
1
3
5 4
Connector: C-308 <RHD>
AB
Harness side
AC312730AB
Connector C-308
(Harness side)
2
7 6
1
3
5 4
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-459
Step 4. Check the wiring harness between C-308
key reminder switch connector terminal No.4 and
the body earth.
• 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.
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.
AC312039
2
7 6
1
3
5 4
Connector: C-308 <LHD>
AB
Harness side
AC312049
2
7 6
1
3
5 4
Connector: C-308 <RHD>
AB
Harness side
AC312037
Connector: C-220
Junction block (Rear view)
AC
<LHD>
Harness side
AC312047
Connector: C-220
Junction block (Rear view)
AC
<RHD>
Harness side
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-460
Step 6. Check the wiring harness between C-308
key reminder switch connector terminal No.6 and
C-220 ETACS-ECU connector terminal No.30.
• 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 key reminder switch signal is received
normally.
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.
AC312037
Connector: C-220
Junction block (Rear view)
AC
<LHD>
Harness side
AC312047
Connector: C-220
Junction block (Rear view)
AC
<RHD>
Harness side
AC312039
2
7 6
1
3
5 4
Connector: C-308 <LHD>
AB
Harness side
AC312049
2
7 6
1
3
5 4
Connector: C-308 <RHD>
AB
Harness side
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