bulb MITSUBISHI LANCER EVOLUTION 2007 Service Owner's Manual

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 -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.