SWS ± Troubleshooting
54B-47
Inspection Procedure N-18
Multi-center display: Any switch signal is not sent to the
ETACS-ECU.
Probable cause
The cause is probably a malfunction of the multi-center display or the
ETACS-ECU.
D Malfunction of multi-center display
D Malfunction of ETACS-ECU
D Malfunction of harness wire or connector.
Is the multi-center display operated normally?
No
Carry out troubleshooting for the multi-center display. (Refer to
GROUP 54A ± Multi-center Display.)
OK
Replace the multi-center display or ETACS-ECU.
Yes
Check the following connectors:
C-02, C-53, C-83
NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between multi-center display and ETACS-
ECU.
NG
Repair
Inspection Procedure O-1
Check the circuit (power supply line) from the battery to
the ETACS-ECU.
Probable cause
If that power supply circuit is defective, the circuit flowing trough the ignition
switch (IG1) will function as a back-up circuit. In this case, the following
functions will not work when the ignition switch is at LOCK (OFF) position.
D Light reminder alarm function
D Central door lock ing system
D Hazard warning lamp
D Room lamp
D Malfunction of ETACS-ECU
D Malfunction of harness wire or connector.
Measure at ETACS-ECU connector C-82.
D Disconnect connector and measure at J/B side.
D Voltage between terminal 6 and body earth.
OK: System voltage
NG
Check the following connectors:
C-72, C-82
OK
Check trouble symptoms.
NG
Repair
NG
Check the harness wire between ETACS-ECU and fusible link
(3).
OK
Replace the ETACS-ECU.
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