Mitsubishi Lancer Evolution 8. Manual — part 127
SWS – TROUBLESHOOTING
54B-31
Inspection Procedure A-6
Check connectors D-27
Measure at the Sunroof motor assembly connector D-27
• Detach the connector and measure at the harness side
• Voltage between 1 and body earth
OK: Battery voltage
Measure at the Sunroof motor assembly connector D-27
• Detach the connector and measure at the harness side
• Ignition switch : ON
• Voltage between 2 and body earth
OK: Battery voltage
Measure at the Sunroof motor assembly connector D-27
• Detach the connector and measure at the harness side
• Connectivity between 5 and body earth
OK: Connectivity
Check connectors C-113, C-119, C-203
Check the harness between the sunroof motor assembly
and the column switch
SWS monitor ECU check
• Ignition switch : OFF
Sunroof ECU
OK: “OK” is displayed
Check connectors C-32, C-113, C-223
Check the harness between the sunroof motor assembly
and the battery, and repair
Check connectors C-210, C-216
Check the harness between the sunroof motor assembly
and the junction box, and repair
Check the harness between the sunroof motor assembly
and the body earth, and repair
Transient problem
Replace the sunroof motor assembly
No communication with sunroof motor assembly
Probable Cause
There may be an abnormality in the communications circuit system or the power
supply circuit system of the sunroof motor assembly
• Fault in sunroof motor assembly
• Fault in harness or connectors
OK
OK
OK
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
Repair
Repair
Repair
Repair
Repair
NG
NG
NG
NG
OK
SWS – TROUBLESHOOTING
54B-32
Inspection Procedure A-7
SWS monitor ECU check
• Ignition switch : OFF
Column ECU
OK: “OK” is displayed
Is communication with the multi-centre display possible?
Check connectors C-12, C-119, C-203
Check the harness between the multi-centre display and
the column switch
SWS monitor ECU check
• Ignition switch : ACC
Centre display
OK: “OK” is displayed
To Inspection procedure A-2 No communication with
Column ECU (see p.54B-27)
Check the power supply circuit system of the multi-centre
display
Transient problem
Replace the multi-centre display
No communication with multi-centre display
Probable Cause
There may be an abnormality in the communications circuit system or the
power supply circuit system of the multi-centre display
• Fault in multi-centre display
• Fault in harness or connectors
YES
OK
OK
OK
NG
NG
NG
Repair
Repair
NO
NG
OK
SWS – TROUBLESHOOTING
54B-33
SWS monitor ECU check
• Ignition switch : OFF
ETACS-ECU
OK: “OK” is displayed
SWS monitor service data
(Diagnosis by Function) Buzzer : Remove key reminder
buzzer
• Ignition switch : OFF (key inserted)
• Driver’s door : open
Item No.
Item Name
Normal state
(a) 30
Ignition SW IG1
OFF
(b) 32
Driver door SW RH
ON
(c) 43
Buzzer
ON
OK: All display normal state
Confirm the trouble symptoms
Transient problem
To Inspection procedure A-3 No communication with
ETACS-ECU (see p.54B-28)
To Inspection procedure R-2 “Ignition switch (IG1) signal
not input” (See p.54B-96)
To Inspection procedure R-4 “Driver’s door switch signal
not input” (See p.54B-98)
To Inspection procedure R-11 “Key reminder switch
signal not input” (See p.54B-103)
Replace the ETACS-ECU
Replace the ETACS-ECU
SWS monitor service data
ETACS switch data
• Ignition switch : OFF (key inserted)
Item No.
Item Name
Normal state
03
Key reminder SW
OFF
OK: Displays normal state
Inspection Procedure B-1
Ignition key left in reminder function not working correctly
Probable Cause
This function is operated by determining the following input signals in the
ETACS-ECU.
• Ignition switch (IG1)
• Key reminder switch
• Driver’s door switch
If the function is not working properly, then there is probably a problem in the
input circuit system for these signals, or a malfunction in the ETACS-ECU.
• Fault in key reminder switch
• Fault in driver’s door switch
• Fault in ETACS-ECU
• Fault in harness or connectors
OK
OK
OK
OK
NG (a)
NG (b)
NG (c)
NG
NG
NG
SWS – TROUBLESHOOTING
54B-34
Inspection Procedure B-2
SWS monitor ECU check
• Ignition switch : OFF
(1) ETACS-ECU
(2) Column ECU
OK: “OK” is displayed for all
Confirm the trouble symptoms
Transient problem
To Inspection procedure A-3 No communication with
ETACS-ECU (see p.54B-28)
To Inspection procedure A-2 No communication with
Column ECU (see p.54B-27)
To Inspection procedure R-5 “Tail light switch signal not
input” (See p.54B-99)
To Inspection procedure R-2 “Ignition switch (IG1) signal
not input” (See p.54B-96)
To Inspection procedure R-4 “Driver’s door switch signal
not input” (See p.54B-98)
Replace the ETACS-ECU
Replace the ETACS-ECU
SWS monitor service data
(Diagnosis by Function) Buzzer : Lighting monitor buzzer
• Ignition switch : OFF (key removed)
• Tail light switch : ON
• Driver’s door : open
Item No.
Item Name
Normal state
(a) 01
Tail light SW
ON
(a) 30
Ignition SW IG1
OFF
(b) 32
Driver door SW RH
ON
(c) 43
Buzzer
ON
OK: All display normal state
Lights left on reminder function not working correctly
Probable Cause
This function is operated by determining the following input signals in the
ETACS-ECU.
• Ignition switch (IG1)
• Key reminder switch
• Driver’s door switch
• Tail light switch
If the function is not working properly, then there is probably a problem in the
input circuit system for these signals, or a malfunction in the ETACS-ECU.
• Fault in key reminder switch
• Fault in driver’s door switch
• Fault in column switch
• Fault in ETACS-ECU
• Fault in Front ECU
• Fault in column ECU
• Fault in harness or connectors
OK
OK
OK
NG
NG (d)
NG (c)
NG (b)
NG (a)
NG (1)
NG (2)
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