Mitsubishi Grandis. Manual — part 190
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-222
Step 4. ETACS ANALOG data by using the SWS
monitor.
Check the ETACS-ECU input signal related to the
vehicle speed-dependent intermittent wiper interval.
• Set the simulated vehicle speed at approximately
10km/h.
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Refer to inspection procedure Q-25 "The
vehicle speed signal is not received
."
Step 5. Retest the system.
(1) Replace the ETACS-ECU.
(2) Check that the vehicle speed-dependent
intermittent wiper system should work 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 combination meter.
Item No.
Item name
Normal condition
Item 03
SPEED SENSOR
8
− 10 km/h
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-223
Inspection Procedure G-7: The windshield washer does not work.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
The windshield washer motor, the column switch or
the front-ECU may be defective.
POSSIBLE CAUSES
• Malfunction of the windshield washer motor
• Malfunction of the column switch
• Malfunction of the front-ECU
• Damaged harness wires and connectors
Windshield Washer Motor Circuit
FRONT-ECU
WINDSHIELD
WASHER MOTOR
WINDSHIELD
WASHER
RELAY
INPUT SIGNAL
WINDSHIELD WASHER
IGNITION
SWITCH (ACC)
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
REAR
WASHER
RELAY
ETACS-ECU
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-224
DIAGNOSIS PROCEDURE
Step 1. Check the operation of the windshield
wipers.
Check that the windshield wipers work normally.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Refer to Inspection Procedure G-1 "The
windshield wipers does not work at all
Step 2. ECU check by using the SWS monitor.
Check that the power supply and earth lines to the
column switch (column-ECU) and the front-ECU and
the SWS communication lines are normal.
• Turn the ignition switch to the ACC position.
ECUS TO BE CHECKED
• COLUMN ECU
• FRONT ECU
• ETACS ECU
OK: "OK" are displayed for all the items
Q: Are the check result normal?
"OK" are displayed for all the items :
Go to Step 3.
"NG" is displayed on the "COLUMN ECU" menu. :
Refer to Inspection Procedure A-2
"Communication with the column switch
(column-ECU) is not possible
"NG" is displayed on the "FRONT ECU" menu. :
Refer to Inspection Procedure A-4
"Communication with the front-ECU is not
possible
"NG" is displayed on the "ETACS ECU" menu. :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
Step 3. Connector check: A-34 windshield
washer motor connector.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Repair the connector.
Step 4. Check the windshield washer motor
assembly.
Refer to GROUP 51
− Windshield washer
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Replace the windshield washer motor.
Step 5. Check the operation of the rear washer.
Check that the rear washer work normally.
Q: Is the check result normal?
YES :
Replace the front-ECU.
NO :
Go to step 6.
AC310401
Connector: A-34 <LHD>
Harness side
A-34 (GR)
AF
AC310396
Connector: A-34 <RHD>
Harness side
A-34 (GR)
AF
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-225
Step 6. Function diagnosis by using the SWS
monitor.
Check the SWS communication signal, which are
related to the windshield washer function.
<Selected item> F.WIPER WASH
• Turn the ignition switch to the ACC position.
• Windshield washer switch: ON
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Replace the column switch.
Step 7. Connector check: C-220 ETACS-ECU
connector.
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Repair the connector.
Item No.
Item name
Normal
condition
Item 09
FRONT WASH.
SW
ON
AC310626
Connector: C-220 <LHD>
Junction block (Rear view)
AE
Harness side
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
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AC310620
Connector: C-220 <RHD>
Junction block (Rear view)
AD
Harness side
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
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44
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