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 -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:
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:
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.