MITSUBISHI LANCER EVOLUTION 2007 Service Repair Manual

SWS -Troubleshooting54B-17
Inspection Procedure E-1
The windshield wipers do not work at all.
Probable cause
Either the windshield wiper motor, the column switch, or the front-ECU may be
defective.DWindshield wiper motor fault
DColumn switch fault
Dfront-ECU fault
DHarness or connector fault
OK
Replace front-ECU.
NO
NG
Replace
MUT-II diagnosis code
Is an ETACS-ECU diagnosis code output?YESPerform the inspection procedure for the diagnosis code
(Refer to P.54B-3).
NG
Repair
NG
Check the harness between the windshield wiper motor and
the body earth, and repair if necessary.
OK
Check the trouble
symptoms.
NG
Repair
NG
Check the harness between the front-ECU and the ignition
switch (IG2), and repair if necessary.
OK
Check the trouble
symptoms.
OK
Measure at the front-ECU connector A-11X
DDisconnect the connector and test on the harness side.
DIgnition switch ON
DContinuity between terminal 30 and body earth.
OK :System voltageNGCheck the following connectors:A-11X, C-135, C-102,
C-209, C-210
OK
Measure at the windshield wiper motor connector B-01.
DDisconnect the connector and test on the harness side.
DContinuity between terminal 5 and body earth.
OK :Continuity confirmed.NGCheck the following connector:B-01
Check the windshield wiper motor (Refer to GROUP 51 -
Windshield Wipers and Washer).
Inspection Procedure E-2
The windshield wipers only operate at LO speed (though
the wipers and washer can be switched OFF).
Probable cause
If the windshield wipers only operate at LO speed regardless of the switch
position, the windshield wiper fail-safe function is probably activated. Or the
ETACS-ECU ignition switch (ACC) signal may be controlling the wiper operation.DColumn switch fault
Dfront-ECU fault
DHarness or connector fault
OK
Replace front-ECU.
MUT-II diagnosis code
Is an ETACS-ECU diagnosis code output?YESPerform the inspection procedure for the diagnosis code
(Refer to P.54B-3).
Check the MUT-II input signals.
DIgnition switch (ACC)NGCheck the ignition switch (ACC) input circuit system (Refer to
P.54B-26, Inspection Procedure J-1). NO

SWS -Troubleshooting54B-18
Inspection Procedure E-3
The windshield wipers do not respond to any switch
position.
Probable cause
Either the windshield wiper motor, the column switch, or the front-ECU may be
defective.DWindshield wiper motor fault
DColumn switch fault
Dfront-ECU fault
DHarness or connector fault
OK
Replace front-ECU.
NG
Check the harness between the front-ECU and the windshield
wiper motor. NG
Repair
OK
Check the trouble symptoms.
OK
Check the following connectors:
A-11X, A-13, B-01
A-11X, C-136, B-01NG
Repair
OK
Check the windshield wiper motor (Refer to GROUP 51 -
Windshield Wipers and Washer).NG
Replace
Check the MUT-II input signals.
DWindshield mist wiper switch
DWindshield wiper intermittent switch
DWindshield wiper LO speed switch
DWindshield wiper HI speed switch
DWindshield washer switchNGCheck the defective input circuit. (Refer to P.54B-8, Defects
Found by Input Signal Check).
Inspection Procedure E-4
The windshield wipers do not stop in the normal
predetermined position.
Probable cause
Either the windshield wiper motor or the front-ECU may be defective.DWindshield wiper motor fault
Dfront-ECU fault
DHarness or connector fault
NG
Repair
NG
Check the harness between the windshield wiper motor and
ignition switch (ACC), and repair if necessary.
NG
Repair
OK
Replace front-ECU.
NG
Check the harness between the front-ECU and the windshield
wiper motor.NG
Repair
OK
Check the trouble
symptoms.
OK
OK
Check the trouble
symptoms.
OK
Measure at the windshield wiper motor connector B-01.
DDisconnect the connector and test on the harness side.
DIgnition switch ACC
DContinuity between terminal 4 and body earth.
OK :System voltageNGCheck the following connectors:B-01, C-129, C-209, C-210
Check the windshield wiper motor (Refer to GROUP 51 -
Windshield Wipers and Washer).NG
Replace
Check the following connectors:
A-11X, C-34, B-01
A-11X, C-136, B-01

SWS -Troubleshooting54B-19
Inspection Procedure E-5
The windshield washer does not work at all.
Probable cause
Either the windshield washer switch input circuit system, the windshield washer
motor, or the front-ECU may be defective.DWindshield washer motor fault
DColumn switch fault
Dfront-ECU fault
DHarness or connector fault
NG
Repair
NG
Check the harness between the windshield washer motor and
body earth, and repair if necessary.NG
Repair
OK
Replace front-ECU.
NG
Check the harness between the windshield washer motor and
the front-ECU.NG
Repair
OK
Check the trouble
symptoms.
OK
Check the following connectors:F-21, C-112, C-125, A-11X
OK
Check the trouble
symptoms.
OK
Measure at the windshield washer motor connector F-21.
DDisconnect the connector and test on the harness side.
DContinuity between terminal 1 and body earth
OK :Continuity confirmed.NGCheck the following connector:F-21
OK
Check the windshield washer motor (Refer to GROUP 51 -
Windshield Wipers and Washer).NG
Replace
YES
Check the MUT-II input signals.
DWindshield washer switchNGCheck the windshield washer switch input circuit system
(Refer to P.54B-31, Inspection Procedure J-8).
Is the windshield wiper operating normally?NOCheck windshield wipers (Refer to P.54B-7, Trouble Symptom
Chart).
Inspection Procedure E-6
Windshield wipers are not operated with the switch in INT,
WASHER and MIST positions, and operated in a low mode
with the switch in Lo and Hi positions.
Probable cause
Fail-safe function may be operated due to the fault on SWS communication line.
Fail-safe function is activated with the ignition switch in ACC position when the
ignition switch ACC signal is not input due to the open circuit, etc.DColumn switch fault
Dfront-ECU fault
DETACS-ECU fault
DHarness or connector fault
NG
Replace front-ECU.
Check the trouble symptoms.
Check the ignition switch (ACC) input circuit system (Refer to
P.54B-26, Inspection Procedure J-1)NOCheck the MUT-II input signals.
DIgnition switch (ACC)
YES
NG
Replace column switch.
Check the trouble symptoms.
NG
Replace ETACS-ECU.Check the trouble symptoms.

SWS -Troubleshooting54B-20
Inspection Procedure F-1
Except for lighting switch “OFF” the headlamps only
respond to the “low-beam” position.
Probable cause
If the headlamps only go onto low-beam regardless of the switch position, the
headlamp fail - safe function is probably activated.DColumn switch fault
Dfront-ECU fault
DHarness or connector fault
NO
Replace front-ECU.
MUT-II diagnosis code
When the ignition switch is in the LOCK (OFF) position, is the
diagnosis code output?YESDiagnosis Code Chart (Refer to P.54B-3).
Inspection Procedure F-2
The tail lamps do not work.
Probable cause
If none of the tail lamps light up, either the tail lamp switch input circuit system
or the front-ECU may be defective.DColumn switch fault
Dfront-ECU fault
DHarness or connector fault
NG
Repair
NG
Check the harness between the front - ECU and the battery,
and repair if necessary.
OK
Replace front-ECU.
OK
Check the trouble
symptoms.
OK
Measure at the front - ECU connector A-10X.
DDisconnect the connector and test on the relay box side.
DVoltage between terminal 5 and the body earth.
OK :System voltageNGCheck the following connector:A-10X
NO
Check the MUT-II input signals.
DTail lamp switchNGCheck the tail lamp switch input circuit system (Refer to
P.54B-31, Inspection Procedure J-7).
MUT-II diagnosis code
When the ignition switch is in the LOCK (OFF) position, is the
diagnosis code output?YESDiagnosis Code Chart (Refer to P.54B-3).
NOTE
If only one of the tail lamps fails to light up, check the bulb and the harness between the front-ECU
and the lamp, and between the lamp and body earth.

SWS -Troubleshooting54B-21
Inspection Procedure F-3
The headlamps (low-beam) do not light.
Probable cause
If the (low-beam) headlamp on neither side lights up, either the headlamp switch
input circuit system or the front-ECU may be defective.DColumn switch fault
Dfront-ECU fault
DHarness or connector fault
NO
Check the MUT-II input signals.
DHeadlamp switchNGCheck the headlamp switch input circuit system (Refer to
P.54B-31, Inspection Procedure J-7).
NG
Repair
NG
Check the harness between the front-ECU and the battery,
and repair if necessary.
OK
Replace front-ECU.
OK
Check the trouble
symptoms.
OK
Measure at the front - ECU connector A-10X.
DDisconnect the connector and test on the relay box side.
DVoltage between terminal 3 and the body earth.
OK :System voltageNGCheck the following connector:A-10X
MUT-II diagnosis code
When the ignition switch is in the LOCK (OFF) position, is the
diagnosis code output?YESDiagnosis Code Chart (Refer to P.54B-3).
NOTES:
1. If only one of the headlamps fails to light up, check the headlamp bulb and the harness between
the front-ECU and the headlamps, and between the headlamps and body earth.
2. When failure is detected on the harness from the front-ECU to the battery, check and repair the
front-ECU No. 4 terminal (A-10X) as well.
Inspection Procedure F-4
The headlamps (high-beam) do not light.
Probable cause
If the (high-beam) headlamp on neither side lights up, either the dimmer switch
input circuit system or the front-ECU may be defective.DColumn switch fault
Dfront-ECU fault
DHarness or connector fault
NG
Check the harness between the front-ECU and the battery,
and repair if necessary.OK
Check the trouble
symptoms.
NG
Repair
OK
Measure at the front - ECU connector A-10X.
DDisconnect the connector and test on the relay box side.
DVoltage between terminal 4 and the body earth.
OK :System voltageNGCheck the following connector:A-10X
YES
Check the MUT-II input signals.
DDimmer switchNGCheck the dimmer switch input circuit system (Refer to
P.54B-31, Inspection Procedure J-7).
OK
Replace front-ECU.
Are the headlamps (low-beam) operating normally?NOCheck the headlamps (low-beam) (Refer to P.54B-21,
Inspection Procedure F-3).
NOTE
1. If only one of the headlamps fails to light up, check the headlamp bulb and the harness between
the front-ECU and the headlamps, and between the headlamps and body earth.
2. When failure is detected on the harness from the front-ECU to the battery, check and repair the
front-ECU No. 3 terminal (A-10X) as well.

SWS -Troubleshooting54B-22
Inspection Procedure F-5
The headlamps (low or high-beam) do not work when the
passing switch is ON.
Probable cause
If the headlamps (low and high-beams) are normal, either the passing switch
input circuit system or the front-ECU may be defective.DColumn switch fault
Dfront-ECU fault
DHarness or connector fault
OK
Replace front-ECU.
YES
Check the MUT-II input signals.
DPassing switchNGCheck the passing switch input circuit system (Refer to
P.54B-31, Inspection Procedure J-7).
Are the headlamps (low and high-beams) operating normally?NOCheck the headlamps (Refer to P.54B-7, Trouble Symptom
Chart).
Inspection Procedure F-6
The headlamp automatic cut-off function is not working
normally.
Probable cause
The ETACS-ECU controls the headlamp automatic cut-off function based on input
signals from the following switches.
DIgnition switch (IG1)
DDriver’s door switch
DTail lamp switch
DHeadlamp switch
If the headlamp automatic cut-off function is not operating normally, either one of
the above input circuit systems, the front-ECU, or the ETACS-ECU may be
defective.DDriver’s door switch fault
DColumn switch fault
Dfront-ECU fault
DETACS-ECU fault
DHarness or connector fault
NG
Replace front-ECU.
NG
Replace ETACS-ECU.Check the trouble symptoms.
Check the trouble symptoms.
YES
NG
Check the defective input circuit. (Refer to P.54B-8, Defects
Found by Input Signal Check).
Are the tail lamps and headlamps operating normally?NOCheck the headlamps and tail lamps (Refer to P.54B-7,
Trouble Symptom Chart).
Check the MUT-II input signals.
DIgnition switch (IG1)
DDriver’s door switch
DTail lamp switch
DHeadlamp switch
OK

SWS -Troubleshooting54B-23
Inspection Procedure L-1
Rear fog lamp is not properly illuminated.
Probable cause
If the tail lamps and the headlamps are normal when the rear fog lamps are not
illuminated, failure may occur on the rear fog lamp switch input circuit, the rear
fog lamp relay, and the front-ECU or ETACS-ECU.DFog fog lamp switch inoperative
DRear fog lamp relay inoperative
Dfront-ECU fault
DETACS-ECU fault
DHarness or connector fault
Check the trouble symptoms.
NG
Repair
OK
Check the trouble symptoms.
YES
NG
Check the rear fog lamp switch input circuit (Refer to P.54B-8,
Inspection Procedure J-4).
Are the tail lamps and headlamps operating normally?NOCheck the headlamps and tail lamps (Refer to P.54B-7,
Trouble Symptom Chart).
OK
NG
Check the MUT-II input signals.
DRear fog lamp switch
Replace
OK
Check the rear fog lamp relay (Refer to GROUP 54A – Rear
Fog Lamp).
NGCheck the following connectors:
C-219, C-208, C-213
NG
Check and repair the harness from the rear fog lamp relay to
the battery.
OK
Check the trouble
symptoms.
Check the following connectors:
C-219, C-208, C-133, F-16
OK
Measure at the rear fog lamp relay connector C-219.
DDisconnect the connector and test on the junction box
side.
DVoltage between terminal 1 and the body earth
DVoltage between terminal 3 and the body earth
OK :System voltage
Replace ETACS-ECU.
NG
Replace front-ECU.
NG
RepairNG
NGCheck the harnesses of the rear fog lamp relay - the
front-ECU, and the rear fog lamp relay - the rear fog lamps.

SWS -TroubleshootingSWS -Troubleshooting54B-24
Inspection Procedure H-1
The turn signal lamp do not light.
Probable cause
The ETACS-ECU controls the turn signal lamps based on input signals from the
following switches.
DIgnition switch (IG1)
DTurn signal lamp left-hand switch
DTurn signal lamp right-hand switch
If none of the turn signal lamps are operating normally, either one of the above
input circuit systems or the ETACS-ECU may be defective.DColumn switch fault
DETACS-ECU fault
DHarness or connector fault
NG
Check the defective
input circuit. (Refer to
P.54B-8, Defects Found
by Input Signal Check).
OK
Replace ETACS-ECU.
NG
Repair
NG
Check the harness between the ETACS-ECU and the battery,
and repair if necessary.Replace ETACS-ECU.
OK
OK
Check the trouble
symptoms.
NO
Measure at ETACS-ECU connector C-226.
DDisconnect the connector and test on the junction box
side.
DVoltage between terminal 11 and the body earth.
OK :System voltageNGCheck the following connectors:C-226, C-209, C-135
Are the hazard warning lamps lighting up normally?YESCheck the MUT-II input signals.
DIgnition switch (IG1)
DTurn signal lamp left-hand switch
DTurn signal lamp right-hand switch
NOTE
If only one of the turn signal lamps is not lighting, check the bulb and the harness between the ETACS-ECU
and the lamp, and between the lamp and the body earth.
Inspection Procedure H-2
The hazard warning lamps do not light up.
Probable cause
The ETACS-ECU controls the hazard warning lamps based on input signals from
the hazard warning lamp switch.
If the hazard warning lamps are not operating normally, either the hazard
warning lamp switch input circuit system or the ETACS-ECU may be defective.DHazard warning lamp switch fault
DETACS-ECU fault
DHarness or connector fault
OK
Replace ETACS-ECU.
OK
Check the MUT-II input signals.
DHazard lamp switchNGCheck the hazard lamp switch input circuit (Refer to P.54B-27,
Inspection Procedure J-3).
YES
Do all of the following functions operate when the ignition
switch is in the LOCK (OFF) position?
DLights left ON reminder warning function
DCentral lockingNGCheck ETACS-ECU battery power circuit system (Refer to
P.54B-33, Inspection Procedure K-1).
Are the turn signal lamps operating normally?NOCheck the turn signal lamps (Refer to P.54B-24, Inspection
Procedure H-1).

SWS -Troubleshooting54B-25
Inspection Procedure I-1
The room lamps do not come ON or OFF normally.
Probable cause
The ETACS-ECU controls the room lamp ON/OFF operation based on input
signals from the following.
DIgnition switch (ACC)
DIgnition switch (IG1)
DDriver’s door switchDDoor switch fault
DDriver’s door lock actuator fault
DETACS-ECU fault
DHarness or connector fault
DDriversdoorswitch
DAll door switches
DDriver’s door lock actuator
If the room lamp ON/OFF operation is defective, either one of the above input circuit
systems or the ETACS-ECU may be defective.
NGCheck the defective input circuit. (Refer to P.54B-8, Defects
Found by Input Signal Check).
OK
OK
NG
Check the trouble symptoms.
NG
RepairCheck the following connectors:C-226, C-218, D-03, D-05
NG
Repair
When the ignition switch is in the LOCK (OFF) position, do
the hazard lamps work?NOCheck ETACS-ECU battery power circuit system (Refer to
P.54B-33, Inspection Procedure K-1).
YES
Check the front and rear room lamp bulbs.
OK
Check the MUT-II input signals.
DIgnition switch (ACC)
DIgnition switch (IG1)
DDriver’s door switch
DAll door switches
NG
Replace ETACS-ECU.
OK
Check the trouble symptoms.
Check the harness between ETACS-ECU and the front and
rear room lamps.

SWS -Troubleshooting54B-26
Inspection Procedure J-1
No ignition switch (ACC) signal input to ETACS-ECU.
Probable cause
As the ignition switch (ACC) input signal is used to control the operation of the
following functions, any abnormality in this signal prevents these functions
operating normally.
DWindshield wiper and washerDETACS-ECU fault
DHarness or connector fault
NG
Repair
NG
Check the harness between the ETACS-ECU and the ignition
switch (ACC), and repair if necessary.
OK
Replace ETACS-ECU.
OK
Check the trouble
symptoms.
Measure at ETACS-ECU connector C-226.
DDisconnect the connector and test on the junction box
side.
DIgnition switch: ACC
DVoltage between terminal 18 and body earth.
OK :System voltageNGCheck the following connectors:C-226, C-210
Inspection Procedure J-2
No ignition switch (IG1) signal input to ETACS-ECU.
Probable cause
As the ignition switch (IG1) input signal is used to control the operation of the
following functions, any abnormality in this signal prevents these functions
operating normally.
DLights left ON reminder warning function
DPower window timer function
DHeadlamp automatic cut-off function
DTurn signal lamps
DRoom lampsDETACS-ECU fault
DHarness or connector fault
NG
Repair
NG
Check the harness between ETACS-ECU and the ignition
switch (IG1), and repair if necessary.
OK
Replace ETACS-ECU.
OK
Check the trouble
symptoms.
Measure at ETACS-ECU connector C-226.
DDisconnect the connector and test on the junction box
side.
DIgnition switch: ON
DVoltage between terminal 8 and body earth.
OK :System voltageNGCheck the following connectors:C-226, C-210