Mitsubishi Grandis. Manual — part 109
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-433
Step 6. Check the wiring harness from C-221
ETACS-ECU connector No.54 to C-130 fog lamp
switch connector terminal No.1.
• 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 front fog 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.
AC312037
Connector: C-221 <LHD>
Junction block (Rear view)
AD
Harness side
AC312047
Connector: C-221 <RHD>
Junction block (Rear view)
AD
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
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-434
Inspection Procedure Q-5: The driver’s door switch signal is not received. <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 driver's door switch is used to
operate the functions below. If the signal is abnormal,
these functions will not work normally.
• Lamp reminder function
• Key reminder function
• Ignition key cylinder illumination lamp
• Headlamp automatic-shutdown function
• Room lamps
POSSIBLE CAUSES
• Malfunction of the driver's door switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSTIC PROCEDURE
Step 1. Check the installation condition.
Check that the front door switch (LH) is installed on
the body correctly.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Correct the installation condition.
Step 2. Connector check: D-17 front door switch
(LH) connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
Step 3. Check the front door switch (LH).
Refer to GROUP 42
− Door
.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Replace the front door switch (LH).
Driver's Door Switch Input Circuit <LHD>
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
FRONT DOOR
SWITCH (LH)
ETACS-ECU
J/B SIDE
AC312053
Connector: D-17 <LHD>
AB
3 2 1
Harness side
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-435
Step 4. Connector check: C-219 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the defective connector.
Step 5. Check the wiring harness between D-17
front door switch (LH) connector terminal No.1
and C-219 ETACS-ECU connector terminal No.10.
NOTE:
Prior to the wiring harness inspection, check joint
connector C-210, and repair if necessary.
• Check the input line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the wiring harness.
Step 6. Retest the system.
Check that the driver's door 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-219
Junction block (Rear view)
Junction block side
AB
3
1
2
14
4
5
7 6
8
1110 9
1312
17
15
16
18
19
20
<LHD>
AC312053
Connector: D-17 <LHD>
AB
3 2 1
Harness side
AC312037
Connector: C-219
Junction block (Rear view)
Junction block side
AB
3
1
2
14
4
5
7 6
8
1110 9
1312
17
15
16
18
19
20
<LHD>
AC312035
Harness side
AC
Connector: C-210 <LHD>
7
15
5
6
1413
2
9
12
4 3
10
11
1
8
Junction block (Front view)
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-436
Inspection Procedure Q-5: The driver’s door 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 front door switch (RH) is used to
operate the functions below. If the signal is abnormal,
these functions will not work normally.
• Lamp reminder function
• Headlamp automatic-shutdown function
• Room lamps
POSSIBLE CAUSES
• Malfunction of the driver's door switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSTIC PROCEDURE
Step 1. Check the installation condition.
Check that the front door switch (RH) is installed on
the body correctly.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Correct the installation condition.
Step 2. Connector check: D-02 front door switch
(RH) connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
Step 3. Check the front door switch (RH).
Refer to GROUP 42
− Door
.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Replace the front door switch (RH).
Driver's Door Switch Input Circuit <RHD>
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
FRONT DOOR
SWITCH (RH)
ETACS-ECU
J/B SIDE
AC312058
AB
Harness side
Connector: D-02 <RHD>
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