Eclipse GS L4-2350cc 2.4L SOHC MFI (2002)
Connectors
CIRCUIT OPERATION
-
The windshield wiper and washer switch sends a signal through the column-ECU (incorporated in the column switch) to the front-ECU. If the
column-ECU sends a windshield wiper and washer switch "ON" signal to the front-ECU, the front-ECU turns on the relay (incorporated in the
front-ECU), thus causing the windshield wiper and washer motor to be turned on.
-
If the SWS communication line is defective, the front-ECU operates windshield wiper motor by using the other communication lines (wiper
backup circuit) instead of that line. In this case, the windshield wiper works at low speed regardless of the windshield wiper and washer switch
positions ("LO" or "HIGH").
TECHNICAL DESCRIPTION (COMMENT)
If the windshield wiper does not work at all, the windshield wiper motor, column switch (windshield wiper and washer switch) or the front-ECU may be
defective.
TROUBLESHOOTING HINTS
-
Malfunction of the wiper motor
-
Malfunction of the column switch (windshield wiper and washer switch)
-
Malfunction of the front-ECU
-
Damaged harness wires or connectors
DIAGNOSIS
Required Special Tools:
-
MB991223: Test Harness Set
-
MB991502: Scan Tool (MUT-II)
-
MB991862: SWS Monitor Kit
