SWS ± Troubleshooting
54B-15
Inspection Procedure B-1
Buzzer: Light reminder warning function does not work
normally.
Probable cause
The ETACS-ECU operates the light reminder warning function, based on input
signals from the following switched:
D Ignition switch (IG1)
D Driver's door switch
D Tail lamp switch
D headlamp switch
If the function does not work normally, a defect on the relevant circuit or the
ETACS-ECU may be suspected.
D Malfunction of driver's door switch
D Malfunction of column switch
D Malfunction of ETACS-ECU
D Malfunction of harness wire or connector
Do all of the following functions operate when the ignition
key is at the LOCK (OFF) position?
D Central door locking system
D Hazard warning lamp
D Room lamp
No
Check the ETACS-ECU battery circuit. (Refer to P.54B-47, Inspec-
tion Procedure O-1.)
Yes
MUT-II input signal check
D Ignition switch (IG1)
D Driver's door switch
D Tail lamp switch
D Headlamp switch
NG
Check the defective input circuit. (Refer to P.54B-13, Defects Found
by Input Signal Check.)
OK
Replace the ETACS-ECU.
Inspection Procedure B-2
Buzzer: Multi-center display buzzer function does not
work normally.
Probable cause
If the multi-center display is operating normally, the cause is probably a
malfunction in the harness between the multi-center display and the
ETACS-ECU or in the ETACS-ECU itself.
D Malfunction of multi-center display
D Malfunction of ETACS-ECU
D Malfunction of harness wire or connector
Is the multi-center display operating normally?
No
Carry out troubleshooting for the multi-center display. (Refer
to GROUP 54A ± Multi-center Display.)
Yes
MUT-II input signal check
D Multi-center display
NG
Check the multi-center display input circuit. (Refer to P.54B-47,
Inspection Procedure N-18.)
OK
Replace the ETACS-ECU.
To Next Page
Loading...
