Mitsubishi Lancer Evolution 8. Manual — part 136
SWS – TROUBLESHOOTING
54B-67
Is the rear wiper working normally?
SWS monitor ECU check
• Ignition switch: OFF
ETACS-ECU
OK: “OK” is displayed
SWS monitor service data
(Diagnosis by Function)
Rear wiper / washer: Rear wiper
• Ignition switch: ACC
• Rear washer switch: ON
Item No.
Item Name
Normal value
14
Rear washer SW
ON
OK: Normal value displayed
Check connector F-20
Check rear washer motor (See Chap. 51*)
Measure at Rear washer motor connector F-20
• Detach the connector and measure at the harness side
• Connectivity between 1 & body earth
OK: Battery voltage
Check connector C-226, C-116
Check the harness between the rear washer motor and
the ETACS-ECU
Confirm the trouble symptoms
Transient problem
To Inspection procedure H-1 Rear wiper not working at
all (p.54B-64)
To Inspection procedure A-3 No communication with
ETACS-ECU (p.54B-28)
To Inspection procedure R-6 Rear washer switch signal
not input (p.54B-100)
Check the harness between rear washer motor and the
body earth, and repair
Replace the ETACS-ECU
Inspection procedure H-4
Note
*: See ’01-1 Lancer Evolution VII Servicing Manual (No. 1036K02)
Rear washer does not work
Probable Cause
There is probably an abnormality in the rear washer switch
input circuit system, a fault in the rear washer motor, or a fault
in the ETACS-ECU.
• Fault in rear washer motor
• Fault in column switch
• Fault in ETACS-ECU
• Fault in harness or connectors
Replace
Repair
Repair
Repair
YES
NO
OK
OK
OK
OK
OK
OK
OK
OK
NO
NG
NG
NG
NG
NG
NG
NG
SWS – TROUBLESHOOTING
54B-68
Inspection procedure I-1
SWS monitor ECU check
• Ignition switch: OFF
ETACS-ECU
OK: “OK” is displayed
SWS monitor service data
(Communications data) ETACS-ECU
• Ignition switch: ACC
Item No.
Item Name
Normal value
31
Ignition SW ACC
ON
OK: Normal value displayed
SWS monitor service data
ETACS Switch data
• Motorised remote control mirror (fold/return) switch: ON
Item No.
Item Name
Normal value
14
Motorised mirror SW ACC
ON
OK: Normal value displayed
Confirm the trouble symptoms
Transient problem
To Inspection procedure A-3 No communication with
ETACS-ECU (p.54B-28)
To Inspection procedure R-1 Ignition switch (ACC) signal
not input (p.54B-96)
To Inspection procedure R-12 Motorised remote control
mirror switch (fold / return switch) signal not input
(p.54B-104)
Replace the ETACS-ECU
Motorised retractable door mirrors not working at all
Probable Cause
The motorised retractable door mirrors are operated by
determining the following input signals in the ETACS-ECU.
• Ignition switch (ACC)
• Motorised remote control mirror switch (fold/return switch)
If the motorised retractable door mirrors do not operate, then
there is probably a malfunction in the input circuit system for
the above signals, or a fault in the door mirrors, or a fault in
the ETACS-ECU.
• Fault in motorised remote control mirror switch
• Fault in mirror assembly
• Fault in ETACS-ECU
• Fault in harness or connectors
OK
OK
OK
OK
NG
NG
NG
NG
SWS – TROUBLESHOOTING
54B-69
Can the mirrors can be operated (folded in or out) using
the motorised remote control mirror switch (fold / return
switch)?
SWS monitor ECU check
• Ignition switch: OFF
ETACS-ECU
OK: “OK” is displayed
Confirm the trouble symptoms
Transient problem
Is the automatic return function for the motorised door
mirrors set to “Vehicle speed sensitive function ON” by
the adjustment function?
SWS monitor ECU check
• Ignition switch: ON
ETACS-ECU
OK: “OK” is displayed
SWS monitor service data
ETACS analogue data
• Vehicle speed: changed 0
→
25 km/h
Item No.
Item Name
Normal value
03
Vehicle speed sensor Shows
vehicle speed
(changes with vehicle speed)
OK: Normal value display changes similarly as vehicle
speed changes from 0
→
25 km/h.
Confirm the trouble symptoms
Transient problem
Use the adjustment function to set the automatic return
function for the motorised door mirrors to “Vehicle speed
sensitive function ON” (see p.54B-118)
To Inspection procedure A-3 No communication with
ETACS-ECU (p.54B-28)
To Inspection procedure R-16 Vehicle speed signal not
input (p.54B-108)
Replace the ETACS-ECU
To Inspection procedure I-1 Motorised retractable door
mirrors not working at all (p.54B-68)
To Inspection procedure A-3 No communication with
ETACS-ECU (p.54B-28)
Replace the ETACS-ECU
Inspection procedure I-2
Inspection procedure I-3
Motorised retractable door mirror timer function not working
Probable Cause
If the mirrors can be operated (folded in or out) using the motorised
remote control mirror switch (fold / return switch), then there is
probably a fault in the ETACS-ECU.
• Fault in ETACS-ECU
Motorised retractable door mirror automatic return function (vehicle
speed sensitive opening function) does not work correctly
Probable Cause
This function is operated by determining the following input signals in the
ETACS-ECU.
• Vehicle speed
If the function does not operate correctly, then there is probably a
malfunction in the input circuit for this signal, or a fault in the ETACS-
ECU.
There is also a possibility that the function is set to “Function switched
off” by the adjustment function.
• Fault in vehicle speed sensor
• Fault in ETACS-ECU
• Fault in harness or connectors
YES
OK
OK
NO
NG
NG
NO
YES
OK
OK
OK
NG
NG
NG
SWS – TROUBLESHOOTING
54B-70
Inspection procedure I-4
Has the automatic return function for the motorised door
mirrors been set to “IG driven function ON” by the
adjustment function?
SWS monitor ECU check
• Ignition switch: ON
ETACS-ECU
OK: “OK” is displayed
SWS monitor service data
(Communications data) ETACS-ECU
• Ignition switch (IG1): ON
Item No.
Item Name
Normal value
30
Ignition SW IG1
ON
OK: Normal value displayed
Confirm the trouble symptoms
Transient problem
Use the adjustment function to set the automatic return
function for the motorised door mirrors to “IG driven
function ON” (see p.54B-118)
To Inspection procedure A-3 No communication with
ETACS-ECU (p.54B-28)
To Inspection procedure R-2 Ignition switch (IG1) signal
not input (p.54B-96)
Replace the ETACS-ECU
Motorised retractable door mirror automatic return
function (ignition driven function) does not work correctly
Probable Cause
This function is operated by determining the following input
signals in the ETACS-ECU.
• Ignition switch (IG1)
If this function does not operate correctly, then there is
probably a malfunction in the input circuit system for this
signal, or a fault in the ETACS-ECU.
There is also a possibility that the function has been switched
off by the adjustment function.
• Fault in ETACS-ECU
• Fault in harness or connectors
YES
OK
OK
OK
NO
NG
NG
NG
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