Mitsubishi Lancer Evolution 8. Manual — part 144
SWS – TROUBLESHOOTING
54B-99
Check connectors: Wiper / washer switch, lighting
switch, switch body
Check column switch (light switch)
(Chap. 54A – Column Switches *)
SWS monitor ECU check
• Ignition switch: OFF
Column ECU
OK: “OK” is displayed
SWS monitor service data
(Communications data) Column ECU
Item No.
Item Name
Normal state
00
Head light SW
ON
01
Tail light SW
ON
02
Dimmer SW
ON
03
Passing SW
ON
10
Turn signal RH SW
ON
11
Turn signal LH SW
ON
OK: Normal states displayed at respective switch
positions
Replace the column switch
To Inspection procedure A-2 No communication with
column ECU (p.54B-27)
Transient problem
Inspection procedure R-5
Note:
*: See ’00-5 Lancer Sedia Servicing Manual (No. 1036K00)
Column switches
• Tail light switch signal not input
• Headlight switch signal not input
• Dimmer switch signal not input
• Passing switch signal not input
• LH turn indicator light switch signal not input
• RH turn indicator light switch signal not input
Probable Cause
If there is a problem in the input signal of the column switch
(lighting switch), then the column switch signal (light switch
signal) will cease to be output to the SWS communications
line.
• Fault in column switch
• Fault in harness or connectors
OK
NG
NG
NG
OK
OK
OK
NG
Repair
Replace
SWS – TROUBLESHOOTING
54B-100
Inspection procedure R-6
SWS monitor ECU check
• Ignition switch: OFF
Column ECU
OK: “OK” is displayed
SWS monitor service data
(Communications data) Column ECU
Item No.
Item Name
Normal state
05
INT wiper SW
ON
06
LO wiper SW
ON
07
HI wiper SW
ON
08
Mist wiper SW
ON
08
Front washer SW
ON
13
Rear wiper INT SW
ON
14
Rear washer SW
ON
OK: Normal states displayed at respective switch
positions
Replace the column switch
To Inspection procedure A-2 No communication with
column ECU (p.54B-27)
Transient problem
Column switches
• Windscreen mist wiper switch signal not input
• Windscreen intermittent wiper switch signal not input
• Windscreen low speed wiper switch signal not input
• Windscreen high speed wiper switch signal not input
• Windscreen washer switch signal not input
• Rear wiper switch signal not input
• Rear washer switch signal not input
Probable Cause
If there is a problem in the input signal of the column switches
(wiper switches), then the column switch signal (wiper switch
signal) will cease to be output to the SWS communications
line.
• Fault in column switch
• Fault in harness or connectors
OK
NG
OK
NG
SWS – TROUBLESHOOTING
54B-101
Check connector C-203
Check connector C-225
SWS monitor ECU check
• Ignition switch: ON
Power window main switch
OK: “OK” is displayed
SWS monitor service data
(Communications data) Fr-ECU / P/W / S/R
• Ignition switch: ON
Item No.
Item Name
Normal state
71
P/W module response
Input check
OK: Normal state displayed at each switch position
Replace the power window main switch
To Inspection procedure A-5 No communication with
Power window main switch (p.54B-30)
Transient problem
Check the harness between the column switch and the
ETACS-ECU
SWS monitor service data
(Diagnosis by Function) Wiper: INT
• Ignition switch: ACC
• Wiper switch: INT
Item No.
Item Name
Normal state
37
Wiper INT period
2.4 – 18.0 s
OK: Display of normal state changes as the intermittent
wiper volume is changed.
Replace the ETACS-ECU
Replace the column switch
Transient problem
Measure at the C-203 Column switch connector
• Detach the connector and measure at the column
switch side
• Resistance between 4 and 6
OK: Resistance changes from 0
→
1 kW as windscreen
wiper intermittent wiper volume is turned from FAST
to SLOW.
Inspection procedure R-7
Inspection procedure R-8
Windscreen intermittent wiper volume signal not input
from column switch
Probable Cause
If there is a problem in the input signal for the intermittent
windscreen wiper volume, then the intermittent wiper interval
output to the SWS communications line will be set constantly
to 4 seconds.
• Fault in column switch
• Fault in ETACS-ECU
• Fault in harness or connectors
Respective switch signals not input from power window
main switch
Probable Cause
If there is a problem in the power window main switch, then
the input check response signals will cease to be output to the
SWS communications line from the power window main
switch.
• Fault in power window main switch
• Fault in harness or connectors
OK
OK
NG
OK
NG
OK
NG
NG
NG
NG
NG
OK
NG
OK
Repair
Repair
Repair
SWS – TROUBLESHOOTING
54B-102
Inspection procedure R-9
SWS monitor ECU check
• Ignition switch: OFF
Sunroof ECU
OK: “OK” is displayed
Check connector D-26
Check sunroof switch (See Chap. 42 Sunroof *)
Measure at the Sunroof switch connector D-26
• Detach the connector and measure at the harness side
• Connectivity between 4 & body earth
OK: Connectivity
Check connector D-27
Check the harness between the sunroof switch and the
sunroof motor assembly
SWS monitor service data
(Communications data) Fr-ECU / P/W / S/R
• Ignition switch: ON
Item No.
Item Name
Normal state
72
Sunroof ECU response
Input check
OK: Normal state displayed at each switch position
Replace the Sunroof motor assembly
To Inspection procedure A-6 No communication with
Sunroof motor assembly (p.54B-31)
Check the harness between the sunroof switch and the
body earth, and repair
Transient problem
Note:
*: See ’00-5 Lancer Sedia Servicing Manual (No. 1036K00)
Respective switch signals not input for sunroof
Probable Cause
If there is a problem in the sunroof switch input signal, then
the sunroof input check response signal will cease to be
output to the SWS communications line.
• Fault in sunroof motor assembly
• Fault in sunroof switch
• Fault in harness or connectors
OK
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
NG
OK
Repair
Replace
Repair
Repair
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