2007 MITSUBISHI LANCER EVOLUTION Service Repair Manual

SWS -Troubleshooting54B-5
Code No. 13 Front-ECU-related fault or fault in
connecting to ETACS-ECUProbable cause
This diagnosis code is output when the signal output from the front-ECU to
ETACS-ECU contains an error for 15 consecutive communication cycles (0.6
seconds). The diagnosis code output stops when the signal output from the
front-ECU to ETACS-ECU is normal for 15 consecutive communication cycles
(0.6 seconds).Dfront-ECU fault
DETACS-ECU fault
DHarness or connector fault
NG
Repair
NG
Replace ETACS-ECU.
OK
Check the trouble
symptoms.
NG
Repair
NG
Check the harness between the
front-ECU and the battery.
OK
Check the trouble
symptoms.
NG
Replace ETACS-ECU.
OK
Replace front-ECU.Check the trouble symptoms.
NG
Check the harness between the
front-ECU and ETACS-ECU.NG
Repair
OK
Check the trouble symptoms.
OK
Replace front - ECU.
OK
Check the trouble symptoms.NGCheck the harness between the
front-ECU and the body earth, and
repair if necessary.
NG
Check the following connector:
A-11XNG
Repair
YES
Measure at the front-ECU connector
A-11X.
DDisconnect the connector and
test on the relay box side.
DContinuity between terminal 31
and body earth
OK :Continuity confirmed.OKCheck the following connectors:
A-11X, C-135, C-102, C-228NG
Repair
Is code 13 output when the ignition
switch is in the ON position?NOMeasure at the front-ECU connector
A-10X.
DDisconnect the connector and
test on the relay box side.
DVoltage between terminal 7 and
body earth
OK :System voltageNGCheck the following connector:
A-10X

SWS -Troubleshooting54B-6
Code No. 21 Short circuit in communication lines.Probable cause
This diagnostic code is output when the voltage on an SWS communication line
goes LOW for 0.3 seconds. The diagnosis code output stops when the
ETACS-ECU data line voltage goes HIGH for 0.3 seconds, or when the
ETACS-ECU receives a normal signal from another ECU or switch. During the
output of this code, other codes are suppressed.DColumn switch fault
Dfront-ECU fault
DPower window main switch fault
DETACS-ECU fault
DHarness or connector fault
Replace ETACS-ECU.
YES
YES
When the power window main switch connector E-07 is
disconnected, is Code No. 21 output?NOReplace power window main switch.
YES
When the front-ECU connector A-11X disconnected, is Code
NO. 21 output? (However, Code No. 13 is output)NOReplace front-ECU.
OK
Is code 21 no longer output when column switch connector
C-203 is disconnected? (Note that code 12 is still output with
C-203 disconnected.)NOReplace column switch.
NG
Check the harnesses of the column switch ETACS-ECU,
front-ECU, power window main switch.NG
Repair
OK
Check the trouble symptoms.
Check the following connectors:C-228, C-203, C-135,
A-11X, C-102, C-24, E-07, C-110, D-25, C-25NG
Repair

SWS -Troubleshooting54B-7
TROUBLE SYMPTOM CHART
Trouble symptomInspection
procedureReference
page
No communication with MUT-IIA-154B-10
BuzzersLights left ON reminder warning function not working normally.B-154B-10
Central lockingCentral door locking system not working at all.C-154B-11g
Some doors not locking or unlocking.C-254B-11
Power windowPower windows not working at all.D-154B-12
Power windows are not operated with the power window main
switch.
Driver’s power window not responding to power window main
switch.D-254B-13
Windows not responding to passenger or rear power window
switches.D-354B-14
Passenger or rear power windows not responding to power window
main switch.D-454B-15
Power window timer function not working normally.D-554B-15
While the window is winding up, it suddenly starts coming down
again.D-654B-16
Safety mechanism (to prevent jamming of fingers, etc.) not
working.D-754B-16
Windshield wipers
dh
The windshield wipers do not work at all.E-154B-17p
and washerThe windshield wipers only operate at LO speed (though the wipers
and washer can be switched OFF).E-254B-17
The windshield wipers do not respond to any switch position.E-354B-18
The windshield wipers do not stop in the normal predetermined
position.E-454B-18
The windshield washer does not work at all.E-554B-19
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.E-654B-19
Headlamps, tail lampsExcept for lighting switch“OFF,” the headlamps only respond to the
“low-beam” position.
F-154B-20
The tail lamps do not work.F-254B-20
The headlamps (low-beam) do not light.F-354B-21
The headlamps (high-beam) do not light.F-454B-21
The headlamps (low or high-beam) do not work when the passing
switch is ON.F-554B-22
The headlamp automatic cut-off function is not working normally.F-654B-22
Rear fog lampRear fog lamp is not properly illuminated.G-154B-23
Flasher timerThe turn signal lamps do not light.H-154B-24
The hazard warning lamps do not light up.H-254B-24
Room lampsThe room lamps do not come ON or OFF normally.I-154B-25

SWS -TroubleshootingSWS -Troubleshooting54B-8
DEFECTS FOUND BY INPUT SIGNAL CHECK
When a fault is identified in an input signal check, use the following table to investigate the fault.
Trouble symptomInspection
procedureReference
page
No ignition switch (ACC) signal input to ETACS-ECU.J-154B-26
No ignition switch (IG1) signal input to ETACS-ECU.J-254B-26
No hazard warning lamp switch signal input to ETACS-ECU.J-354B-27
No rear fog lamp switch signal input to ETACS-ECU.J-454B-28
No driver’s door switch signal input to ETACS-ECU.J-554B-29
No door switch signals input to ETACS-ECU.
No driver’s door lock actuator signal input to ETACS-ECU.J-654B-30
Column switchesNo tail lamp switch signal input to ETACS-ECU.J-754B-31
No headlamp switch signal input to ETACS-ECU.
No dimmer switch signal input to ETACS-ECU.
No passing switch signal input to ETACS-ECU.
No turn signal lamp left-hand switch signal input to
ETACS-ECU.
No turn signal lamp right-hand switch signal input to
ETACS-ECU.
Column switchesNo windshield mist wiper switch signal input to ETACS-ECU.J-854B-31
No windshield wiper intermittent switch signal input to
ETACS-ECU.
No windshield low-speed wiper switch signal input to
ETACS-ECU.
No windshield high-speed wiper switch signal input to
ETACS-ECU.
No windshield washer switch signal input to ETACS-ECU.
Power window main switchNo power window main switch signal input to ETACS-ECU.J-954B-32
When the ignition switch is in the LOCK (OFF) position, no functions work normally.K-154B-33
ETACS-ECU battery power supply circuit control check.
NOTE
A diagnosis code is output for front-ECU and column switch battery power supply circuit control abnormalities.
Apply the diagnosis code inspection procedures to address these abnormalities.

SWS -Troubleshooting54B-9
Input Signal Inspection Procedure Nos. by Function
When more than one SWS function fails at the same time, run checks based on the following table.
(The table lists only input signals and functions in which multiple faults can occur.)
FunctionJ-1J-2J-3J-5J-6J-7J-8
Driver’s doorAll doors
Central locking
controlF
Power window controlF
Power window timerFF
Windshield wiper
and washer controlFF
Rear wiper and
washer controlFF
Headlamp controlF
Rear fog lamp controlF
Tail lamp controlF
Headlamp automatic
turn-offFFF
Turn signal lamp
controlFF
Hazard warning lamp
controlF
Room lamp controlFFF

SWS -Troubleshooting54B-10
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
Inspection Procedure A-1
No communication with MUT-II
Probable cause
Either the ETACS-ECU power supply circuit system or the harness or connector
between the diagnosis connector and ETACS-ECU may be defective.DHarness or connector fault
DETACS-ECU fault
NG
Check the harness between ETACS-ECU and the body earth,
and repair if necessary.
NG
Repair
NG
Repair
OK
Replace ETACS-ECU.
NG
Check the harness between ETACS-ECU and diagnosis
connector.NG
Repair
OK
Check the trouble
symptoms.
OK
Check the following connectors:
C - 228, C - 26, C - 22
C-228, C-28, C-22
OK
Check the trouble
symptoms.
NO
Measure at the ETACS-ECU connector C-228.
DDisconnect the connector and test on the junction box
side.
DContinuity between terminal 56 and body earth.
OK :Continuity confirmed.NGCheck the following connectors:C-228, C-08
YES
Is communication, by MUT-II, possible with other systems?YESCheck ETACS-ECU battery power circuit system (Refer to
P.54B-33, Inspection Procedure K-1).
Is communication by MUT-II possible when the ignition switch
is ON?NOCheck the MUT-II diagnosis circuit, and repair if necessary.
NOTE:
When failure is detected on the harness between ETACS-ECU and the body earth, check No. 3 terminal
(C-226) of ETACS-ECU as well. Repair, if required.
Inspection Procedure B-1
Lights left ON reminder warning function 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 switchDDriver’s door switch fault
DColumn switch fault
DETACS-ECU fault
DHarness or connector fault
OK
Replace ETACS-ECU.
YES
Check the MUT-II input signals.
DIgnition switch (IG1)
DDriver’s door switch
DTail lamp switch
DHeadlamp switchNGCheck the defective input circuit. (Refer to P.54B-7, Defects
Found by Input Signal Check).
Do all of the following functions operate when the ignition
switch is in the LOCK (OFF) position?
DCentral locking
DHazard lampsNOCheck ETACS-ECU battery power circuit system (Refer to
P.54B-33, Inspection Procedure K-1).

SWS -Troubleshooting54B-11
Inspection Procedure C-1
Central door locking system not working at all.
Probable cause
A change in the input signal from the driver’s door lock actuator activates all the
door lock actuators, causing the ETACS-ECU to lock or unlock all the doors.
If the central locking is not working normally, the driver’s door lock actuator or
the ETACS-ECU may be defective.DDriver’s door lock actuator fault
DETACS-ECU fault
DHarness or connector fault
NG
Repair
OK
Replace ETACS-ECU.
NG
Check the harness between ETACS-ECU and battery.NG
Repair
OK
Check the trouble
symptoms.
OK
Check the following connectors:C-226, C-211, C-35, C-132
YES
Check the driver’s door lock actuator (Refer to GROUP 42 -
Doors).NG
Repair
Do all of the following functions operate when the ignition
switch is in the LOCK (OFF) position?
DLights left ON reminder warning function
DHazard warning lamps
DRoom lampsNOCheck ETACS-ECU battery power circuit system (Refer to
P.54B-33, Inspection Procedure K-1). OK
Check the MUT-II input signals.
DDriver’s door lock actuatorNGCheck the driver’s door lock actuator input circuit system
(Refer to P.54B-30, Inspection Procedure J-6).
Inspection Procedure C-2
Some doors not locking or unlocking.
Probable cause
The door lock actuator of the door(s) that are not responding may be defective.DDoor lock actuator fault
DHarness or connector fault
NG
Check the harness between ETACS-ECU and the door lock
actuator of the door(s) not responding, and repair if necessary.
OK
Check the trouble symptoms.
OK
Check the following connectors:

C-227, C-110, C-213, C-226, E-08
C-226, C-213, C-24, E-18
C-226, C-216, D-12, E-12
C-226, C-213, C-112, D-02, E-23

C-227, C-24, C-28, C-213, C-226, E-08
C-226, C-213, C-110, C-28, E-18
C-226, C-213, C-28, C-133, D-12, E-12
C-226, C-216, D-02, E-23NG
Repair
Check the driver’s door lock actuator that are not responding
(Refer to GROUP 42 - Doors).NG
Replace

SWS -Troubleshooting54B-12
Inspection Procedure D-1
Power windows not working at all.
Probable cause
Power windows are not operated with the power window
main switch.
The power window relay or the ETACS-ECU may be defective.DPower window relay fault
DETACS-ECU fault
DHarness or connector fault
NG
Check the harness between the power window relay and the
fusible link (5), and repair if necessary.
NG
Repair
OK
Check the trouble
symptoms.
OK
NG
Check the following connectors:
C-224, C-210, C-35 (R.H.drive vehicles only), C-132
OK
Check power window relay (Refer to GROUP 42 - Door.)NG
Replace
Check the MUT-II input signals.
DIgnition switch (IG1)NGCheck the ignition switch (IG1) input circuit system (Refer to
P.54B-26, Inspection Procedure J-2).
NG
Check and repair the harness between the power window
relay and the body earth.
NG
RepairOK
Replace ETACS-ECU.
OK
Check the trouble
symptoms.
OK
Measure at the power window relay connector C-224.
DDisconnect the connector and test on the junction box
side.
DContinuity between terminal 3 and body earth.
OK :Continuity confirmed.NGCheck the following connectors:
C-224, C-213, C-08
C-224, C-213, C-102
Measure at the power window relay connector C-224.
DDisconnect the connector and test on the junction box
side.
DVoltage between terminal 5 and the body earth.
OK :System voltage