Mitsubishi Lancer Evolution 8. Manual — part 141
SWS – TROUBLESHOOTING
54B-87
Check connectors
(Front turn signal light RH) A-41
(Front turn signal light LH) A-33
(Side turn signal light RH) A-01
(Side turn signal light LH) A-04
(Rear turn signal light RH) F-10
(Rear turn signal light LH) F-15
(Turn signal dashboard indicator light RH) C-108
(Turn signal dashboard indicator light LH) C-106, C-108
Check the turn signal light bulb that is not working
(Front turn signal light)
Measure at the Front combination light connector A-
41(RH), A-33(LH)
• Detach the connector and check on the harness side
(Car not fitted with discharge head lights)
• Connectivity between 3 & body earth
(Car fitted with discharge head lights)
• Connectivity between 7 & body earth
OK: Connectivity
(Side turn signal light)
Measure at the Side turn signal light connector A-01(RH),
A-04(LH)
• Detach the connector and check on the harness side
• Connectivity between 1 & body earth
OK: Connectivity
(Rear turn signal light)
Measure at the Rear combination light connector F-
10(RH), F-15(LH)
• Detach the connector and check on the harness side
• Connectivity between 5 & body earth
OK: Connectivity
(Turn signal dashboard indicator light)
Measure at the Combination meter connector C-108
• Detach the connector and check on the harness side
• Connectivity between 48 & body earth
OK: Connectivity
Check the harness between the body earth, and the non-
functioning front combination light, side turn signal light,
rear combination light, or combination meter, and repair
Check connectors
(Front turn signal light RH) C-31, C-209
(Front turn signal light LH) C-31, C-209
(Side turn signal light RH) C-115, C-209
(Side turn signal light LH) C-31, C-209
(Rear turn signal light RH) C-215
(Rear turn signal light LH) C-29, C-209
(Turn signal dashboard indicator light RH) C-212
(Turn signal dashboard indicator light LH) C-212
Check the harness between the ETACS-ECU, and the
non-functioning front combination light, side turn signal
light, rear combination light, or combination meter, and
repair
Inspection procedure M-3
One of the turn indicator lights does not light up
Probable Cause
If one of the turn indicator lights is not working correctly, then
there is probably a fault in the harness/connector, or a fault in
the bulb.
• Fault in turn indicator light bulb
• Fault in harness or connectors
OK
OK
NG
NG
NG
OK
Repair
Replace
OK
NG
Repair
SWS – TROUBLESHOOTING
54B-88
Inspection procedure N-1
Front interior light and/or rear interior light does not light up or
switch off correctly (vehicle not fitted with sunroof)
Probable Cause
(Vehicle not fitted with keyless entry)
The front interior light and/or rear interior light (in vehicles not fitted
with a sunroof) switches on/off by determining the following input
signals in the ETACS-ECU.
• Ignition switch (IG1)
• Key reminder switch
• Driver’s door switch
• All door switch
• Driver’s door lock actuator
If the lights do not work correctly, then there is probably a problem in
the input circuit system for these signals, or a fault in the ETACS-ECU.
It is possible that the delay switch off time has been set to “0 seconds”
by the adjustment function.
• Fault in key reminder switch
• Fault in door switch
• Fault in driver’s door lock actuator
• Fault in ETACS-ECU
• Fault in harness or connectors
(Vehicle fitted with keyless entry)
The front interior light and/or rear interior light (in vehicles not fitted
with a sunroof) switches on/off by determining the following input
signals in the ETACS-ECU.
Moreover, since the interior lights are switched off by the interior light
automatic cut-off function, the input signal from this interior light
automatic cut-off function must be checked at the same time.
• Ignition switch (ACC)
• Ignition switch (IG1)
• Key reminder switch
• Driver’s door switch
• All door switch
• Driver’s door lock actuator
• Generic fuse No. 17
If the lights do not work correctly, then there is probably a problem in
the input circuit system for these signals, a malfunction in the interior
light automatic cut-off function, or a fault in the ETACS-ECU.
It is possible that the delay switch off time has been set to “0 seconds”
by the adjustment function.
• Fault in key reminder switch
• Fault in door switch
• Fault in driver’s door lock actuator
• Fault in ETACS-ECU
• Fault in harness or connectors
SWS – TROUBLESHOOTING
54B-89
(Vehicle not fitted with keyless entry)
Is the interior light delay switch off time period set to “7.5
seconds”, “15 seconds”, “30 seconds” or “60 seconds”?
SWS monitor ECU check
• Ignition switch: OFF
ETACS-ECU
OK: “OK” is displayed
SWS monitor service data
(Communications data) ETACS-ECU
• Ignition switch: OFF
• Driver’s door: Open (but closed when checking Item
No.38)
• All doors: Open (but closed when checking Item No.32)
Item No.
Item Name
Normal state
(a) 30
Ignition SW IG1
OFF
(b) 32
Driver’s door SW
ON
(c) 38
Security alarm
ON
OK: Normal state displayed for all
SWS monitor service data
ETACS switch data
• Ignition switch: OFF (key inserted)
Item No.
Item Name
Normal state
03
Key reminder SW
ON
OK: Normal state displayed
Check connector C-216
Check at Junction box connector C-216
• Detach the connector and check at the junction box
side
• Voltage between 3 & body earth
OK: Battery voltage
Check the front interior light bulb and the rear interior
light bulb (vehicle not fitted with sunroof)
Check connectors C-216, C-224, D-04
Confirm the trouble
symptoms
Check the harness between the ETACS-ECU and the
front interior light
Confirm the trouble
symptoms
Check connector D-06
Check the harness between the ETACS-ECU and the
rear interior light
Use the adjustment function to set the interior light delay
switch off time period to “7.5 seconds”, “15 seconds”, “30
seconds” or “60 seconds” (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)
To Inspection procedure R-4 Driver’s door switch signal
not input (p.54B-98)
To Inspection procedure R-14 All door switch signals not
input (except driver’s door) (p.54B-106)
To Inspection procedure R-11 Key reminder switch signal
not input (p.54B-103)
Check connectors C-224, C-211, C-32
Confirm the trouble symptoms
Check the harness between the ETACS-ECU and the
battery
Replace the ETACS-ECU
Confirm the trouble symptoms
Replace the ETACS-ECU
Confirm the trouble symptoms
Replace the ETACS-ECU
OK (Vehicle
fitted with
sunroof)
OK (Vehicle not fitted with sunroof)
Repair
NG
YES
OK
OK
OK
OK
OK
OK
OK
NG
OK
NG
NG
NG
NG
OK
NG
Replace
Repair
Repair
Repair
NG
NG
Repair
NO
NG
NG (a)
NG (b)
NG (c)
NG
OK
NG
NG
NG
NG
Repair
Repair
NG
NG
SWS – TROUBLESHOOTING
54B-90
(Vehicle fitted with keyless entry)
Is the interior light delay switch off time period set to “7.5
seconds”, “15 seconds”, “30 seconds” or “60 seconds”?
SWS monitor ECU check
• Ignition switch: OFF
ETACS-ECU
OK: “OK” is displayed
SWS monitor service data
(Communications data) ETACS-ECU
• Ignition switch: OFF
• Driver’s door: Open (but closed when checking Item
No.38)
• All doors: Open (but closed when checking Item No.32)
Item No.
Item Name
Normal state
(a) 30
Ignition SW IG1
OFF
(b) 32
Driver’s door SW
ON
(c) 38
Security alarm
ON
OK: Normal state displayed for all
SWS monitor service data
ETACS switch data
• Ignition switch: OFF (key inserted)
Item No.
Item Name
Normal state
30
Key reminder SW
ON
OK: Normal state displayed
MUT-II/III pulse check
Generic fuse No.17
OK MUT-II/III buzzer sounds once
Check the front interior light bulb and the rear interior
light bulb (vehicle not fitted with sunroof)
Check connectors C-224, C-216, D-04
Confirm the trouble
symptoms
Check the harness between the ETACS-ECU and the
rear personal light
Check connectors D-06
Confirm the trouble
symptoms
Check the harness between the ETACS-ECU and the
rear interior light
Use the adjustment function to set the interior light delay
switch off time period to “7.5 seconds”, “15 seconds”, “30
seconds” or “60 seconds” (p.54B-118)
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-2 Ignition switch (IG1) signal
not input (p.54B-96)
To Inspection procedure R-4 Driver’s door switch signal
not input (p.54B-98)
To Inspection procedure R-14 All door switch signals not
input (except driver’s door) (p.54B-106)
To Inspection procedure R-11 Key reminder switch signal
not input (p.54B-103)
To Inspection procedure R-19 Generic fuse No.17 load
use signal not detected (p.54B-111)
Confirm the trouble symptoms
Replace the ETACS-ECU
Confirm the trouble symptoms
Replace the ETACS-ECU
OK (Vehicle not fitted with
sunroof)
OK (Vehicle
fitted with
sunroof)
YES
OK
OK
OK
OK
OK
OK
NG
OK
NG
NG
NG
NG
NG
OK
Replace
Repair
Repair
Repair
Repair
NO
NO
NG (a)
NG (b)
NG (c)
NG (d)
NG
NG
NG
OK
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