Mitsubishi Grandis. Manual — part 191
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-226
Step 8. Check the wiring harness between A-34
windshield washer motor connector terminal
No.2 and C-220 ETACS-ECU connector terminal
No.23.
NOTE:
Prior to the wiring harness inspection, check the
intermediate connector C-125 and repair if
necessary.
• Check the earth wires for open circuit.
Q: Is the check result normal?
YES :
Go to Step 9.
NO :
Repair the wiring harness.
Step 9. Connector check: A-15X front-ECU
connector.
Q: Is the check result normal?
YES :
Go to Step 10.
NO :
Repair the connector.
AC310401
Connector: A-34 <LHD>
Harness side
A-34 (GR)
AF
AC310396
Connector: A-34 <RHD>
Harness side
A-34 (GR)
AF
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
41
42
43
44
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
39
40
41
42
43
44
AC310613
AD
Connector: C-125 <LHD>
AC310628AB
Connector: C-125 <RHD>
AC311521AC
Connector: A-15X
Relay box side
21
22
23
24
25
26
27
28
29
30
31
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-227
Step 10. Check the wiring harness between A-34
windshield washer motor connector terminal
No.1 and A-15X front-ECU connector terminal
No.21.
• Check the power supply line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 11.
NO :
Repair the wiring harness.
Step 11. Retest the system.
The windshield washer should now 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 front-ECU.
AC311521AC
Connector: A-15X
Relay box side
21
22
23
24
25
26
27
28
29
30
31
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-228
REAR WIPER AND WASHER
Inspection Procedure H-1: The rear wiper does not work at all.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the rear wiper does not work normally, the input
signal circuits to the components below, the rear
wiper motor or the ETACS-ECU may be defective.
• Ignition switch (ACC)
• Rear wiper switch
POSSIBLE CAUSES
• Malfunction of the rear wiper motor
• Malfunction of the column switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
IGNITION
SWITCH (ACC)
REAR
WIPER RELAY
REAR
WIPER MOTOR
ETACS-ECU
J/B SIDE
REAR WIPER SWITCH
INPUT SIGNAL
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 Wiper Drive Circuit
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-229
DIAGNOSIS PROCEDURE
Step 1. ECU check by using the SWS monitor.
Check that the power supply and earth lines to the
column switch (column-ECU) and the ETACS-ECU
and the SWS communication lines are normal.
• Ignition switch: ACC
ECUS TO BE CHECKED
• COLUMN 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 2.
"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 "ETACS ECU" menu. :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
Step 2. Function diagnosis by using the SWS
monitor
Check the SWS communication signal, which are
related to the rear wiper function.
<Selected item> REAR WIPER
• Ignition switch: ACC
• Rear wiper switch: ON
OK: Normal conditions are displayed for all
the items.
Q: Are the check result normal?
Normal conditions are displayed for all the items :
Go to Step 3.
Normal condition is not displayed for item No.13 :
Replace the column switch.
Normal condition is not displayed for item No.31 :
Refer to inspection procedure Q-1 "The
ignition switch (ACC) signal is not received
Step 3. Connector check: G-05 rear wiper motor
connector.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Repair the connector.
Step 4. Check the rear wiper motor.
Refer to GROUP 51
− Rear wiper and washer
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Replace the rear wiper motor.
Step 5. Resistance measurement at the G-05 rear
wiper motor connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Resistance between G-05 rear wiper motor
Item No.
Item name
Normal
condition
Item 13
REAR WIPER SW
ON
Item 31
IG SW (ACC)
ON
AC310222
Connector: G-05
AH
Harness side
AC310222
Connector: G-05
AH
Harness side
AC310506
Connector G-05
(Harness side)
BS
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