Mitsubishi Lancer Evolution 8. Manual — part 135
SWS – TROUBLESHOOTING
54B-63
Are the windscreen wipers working correctly?
Check connector F-19
Check the windscreen washer motor (See Chap. 51*)
Check connectors A-13X, C-31, C-116
Check the harness between the windscreen washer
motor and the front ECU
Confirm the trouble symptoms
Transient problem
To Inspection procedure G-1 Windscreen wipers not
working at all (see p.54B-58)
To Inspection procedure A-2 No communication with
column switch (column ECU) (p.54B-27)
To Inspection procedure A-4 No communication with
front ECU (p.54B-29)
Replace the column switch
Replace the front ECU
Check the harness between the windscreen washer
motor and the body earth
Replace the front ECU
Measure at Windscreen washer motor connector F-19
• Detach the connector and measure on the harness side
• Connectivity between 1 & body earth
OK: Connectivity
SWS monitor ECU check
• Ignition switch: OFF
(1) Column ECU
(2) Front ECU
OK: “OK” is displayed for all
SWS monitor service data
(Diagnosis by Function)
Windscreen wiper: Washer
• Windscreen washer switch: ON
• Ignition switch: ACC
Item No.
Item Name
Normal value
(a) 09
Front washer SW
ON
(b) 70
Front ECU response Normal response
or high beam response
OK: Normal values displayed for all
Inspection procedure G-7
Note
*: See ’01-1 Lancer Evolution VII Servicing Manual (No. 1036K02)
Windscreen washer not working correctly
Probable Cause
There is probably a fault in the windscreen washer motor, a
fault in the column ECU, or a fault in the front ECU
• Fault in column switch
• Fault in front ECU
• Fault in windscreen washer motor
• Fault in harness or connectors
YES
OK
OK
NG
NG
NG
OK
OK
OK
OK
OK
OK
NG
NG
NG
NO
NG (1)
NG (2)
NG (b)
Repair
Repair
Repair
Replace
NG (a)
SWS – TROUBLESHOOTING
54B-64
Inspection procedure H-1
SWS monitor ECU check
• Ignition switch: OFF
(1) ETACS-CU
(2) Column ECU
OK: “OK” is displayed for all
SWS monitor service data
(Diagnosis by Function)
Rear wiper / washer: Rear wiper
• Ignition switch: ACC
• Rear wiper switch: ON
Item No.
Item Name
Normal value
(a) 31
Ignition SW ACC
ON
(b) 13
Rear wiper SW
ON
OK: Normal values displayed for all
Check connector F-05
Check rear wiper motor (See Chap. 51*)
Measure at Rear wiper motor connector F-05
• Detach the connector and measure at the harness side
• Connectivity between 1 & body earth
OK: Connectivity
Check connectors C-224, C-215
Check the harness between the rear wiper motor and the
ETACS-ECU
Confirm the trouble symptoms
Transient problem
To Inspection procedure A-3 No communication with
ETACS-ECU (p.54B-28)
To Inspection procedure A-2 No communication with
column switch (column ECU) (p.54B-27)
To Inspection procedure R-1 “Ignition switch (ACC)
signal not input” (p.54B-96)
Replace the column switch
Check the harness between the rear wiper motor and
the body earth, and repair
Replace the ETACS-ECU
Note:
*: See ’00-5 Lancer Sedia Servicing Manual (No. 1036K00)
Rear wiper not working at all
Probable Cause
The rear wiper is operated by determining the following input
signals in the ETACS-ECU.
• Ignition switch (ACC)
• Rear wiper switch
If the rear wiper does not work, then there is probably a
malfunction in the input circuit system for these signals, or a
fault in the rear wiper motor, or a fault in the ETACS-ECU.
• Fault in rear wiper motor
• Fault in column switch
• Fault in ETACS-ECU
• Fault in harness or connectors
OK
OK
NG
NG
NG
NG
NG
NG
Replace
Repair
Repair
Repair
OK
OK
OK
OK
OK
OK
NG (1)
NG (2)
NG (a)
NG (b)
SWS – TROUBLESHOOTING
54B-65
SWS monitor ECU check
• Ignition switch: OFF
ETACS-ECU
OK: “OK” is displayed
Check connector F-05
Check rear wiper motor (See Chap. 51*)
Check connectors C-215, C-224
Check the harness between the rear wiper motor and the
ETACS-ECU
Replace the ETACS-ECU
To Inspection procedure A-3 No communication with
ETACS-ECU (p.54B-28)
Check connectors C-215, C-210
Check the harness between the rear wiper motor and the
ignition switch (ACC), and repair
Measure at Rear wiper motor connector F-05
• Detach the connector and measure at the harness side
• Ignition switch: ACC
• Voltage between 4 & body earth
OK: Battery voltage
Inspection procedure H-2
Note:
*: See ’00-5 Lancer Sedia Servicing Manual (No. 1036K00)
Rear wiper does not stop in correct position
Probable Cause
There is probably a fault in the rear wiper motor or a fault in
the ETACS-ECU
• Fault in rear wiper motor
• Fault in ETACS-ECU
• Fault in harness or connectors
Replace
Repair
Repair
Repair
Repair
NG
NG
NG
NG
NG
NG
NG
OK
OK
OK
OK
OK
OK
OK
SWS – TROUBLESHOOTING
54B-66
Inspection procedure H-3
SWS monitor ECU check
• Ignition switch: OFF
ETACS-ECU
OK: “OK” is displayed
SWS monitor service data
(Diagnosis by Function)
Rear wiper / washer: Reverse continuous operation
• Ignition switch: ON
• Rear wiper switch: ON
• Shift position: R
Item No.
Item Name
Normal value
41
Inhibitor SW (R)
ON
OK: Normal values displayed
Confirm the trouble symptoms
Transient problem
To Inspection procedure A-3 No communication with
ETACS-ECU (p.54B-28)
To Inspection procedure R-3 “Reversing light switch
signal not input” (p.54B-97)
Replace the ETACS-ECU
Rear wiper does not operate continuously, even when
shift is set to R position
Probable Cause
There is probably a malfunction in the reversing light switch
input circuit system, or a fault in the ETACS-ECU.
• Fault in reverse light switch
• Fault in ETACS-ECU
• Fault in harness or connectors
OK
OK
NG
NG
NG
NG
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