Mitsubishi Grandis. Manual — part 108
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-429
Prior to the wiring harness inspection, check joint
connector C-116 and C-33 <RH drive vehicles>,
intermediate connector C-18, junction block
connectors C-202 and C-203, and repair if
necessary.
• Check the power supply line to the ignition switch
(IG1) for open circuit.
Q: Is the check result normal?
AC312033
AD
Connector: C-18 <LHD>
AC312041AB
Connector: C-18 <RHD>
AC312043AI
Connector: C-33 <RHD>
AC312033
AE
Connector: C-116 <LHD>
AC312041AC
Connector: C-116 <RHD>
AC312036
Connectors: C-202, C-203
AB
C-202
Harness side
C-203
C-202
<LHD>
Harness side
C-203
10
1
6
14
5
12
13
4
11
7
2
3
8
9
Junction block (Front view)
AC312046
Connectors: C-202, C-203
AB
Junction block (Front view)
C-202
Harness side
C-203
C-202
<RHD>
Harness side
C-203
10
1
6
14
5
12
13
4
11
7
2
3
8
9
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-430
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Repair the wiring harness.
Step 7. Retest the system.
Check that the back-up lamp 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.
Inspection Procedure Q-4: The front fog lamp 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 front fog lamp switch is used to
operate the front fog lamps. If the signal is abnormal,
the front fog lamps will not illuminate and extinguish
normally.
POSSIBLE CAUSES
• Malfunction of the fog lamp switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
Front Fog Lamp Switch Input Circuit
ETACS-
ECU
FOG LAMP
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
<RHD>
<LHD>
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-431
DIAGNOSTIC PROCEDURE
Step 1. Connector check: C-130 fog lamp switch
connector
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the defective connector.
Step 2. Check the front fog lamp switch.
Refer to GROUP 54A
− Front fog lamp
.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the fog lamp switch.
Step 3. Resistance measurement at the C-130 fog
lamp switch connector.
(1) Remove the fog lamp switch, and measure at the
wiring harness side.
(2) Resistance between C-130 fog lamp 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.
AC312031
AF
1
5
6
4 3 2
Connector: C-130 <LHD>
Harness side
AC312043AF
1
5
6
4 3 2
Connector: C-130 <RHD>
Harness side
AC312031
AF
1
5
6
4 3 2
Connector: C-130 <LHD>
Harness side
AC312043AF
1
5
6
4 3 2
Connector: C-130 <RHD>
Harness side
AC312730AE
Connector C-130
(Harness side)
1
5
6
4 3 2
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-432
Step 4. Check the wiring harness from C-130 fog
lamp switch connector terminal No.2 to body
earth.
NOTE:
Prior to the wiring harness inspection, check joint
connector C-31 <RH drive vehicles>, 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.
Step 5. Connector check: C-221 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the defective connector.
AC312031
AF
1
5
6
4 3 2
Connector: C-130 <LHD>
Harness side
AC312043AF
1
5
6
4 3 2
Connector: C-130 <RHD>
Harness side
AC312043AE
Connector: C-31 <RHD>
AC312037
Connector: C-221 <LHD>
Junction block (Rear view)
AD
Harness side
AC312047
Connector: C-221 <RHD>
Junction block (Rear view)
AD
Harness side
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