Eclipse V6-3.0L SOHC (2003)
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The ETACS-ECU operates the rear wiper according to the following switches:
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Ignition switch (ACC)
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Rear wiper switch
TECHNICAL DESCRIPTION (COMMENT)
If the rear wiper does not work normally, the input circuit system from the switches, the rear wiper motor, the column switch (windshield wiper and
windshield washer switch) or the ETACS-ECU may be defective (refer to "CIRCUIT OPERATION"),
TROUBLESHOOTING HINTS
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Malfunction of the rear wiper motor
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Malfunction of the column switch (windshield wiper and washer switch)
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Malfunction of the ETACS-ECU
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Damaged harness wires or connectors
DIAGNOSIS
Required Special Tools:
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MB991223: Test Harness Set
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MB991223: Scan Tool (MUT-II)
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MB991223: SWS Monitor Kit
STEP 1. Use scan tool to select "ECU COMM CHECK" on the SWS monitor display.
Check the following ECUs:
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ETACS-ECU
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Column-ECU
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Turn the ignition switch to the "ON" position.
4. Operate the MUT-II according to the procedure below to display "ECU COMM CHECK."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "ECU COMM CHECK."
5. Scan tool MB991502 should show "OK" on the "ECU COMM CHECK" menu.
Q: Are "OK" displayed on the "ETACS ECU" and "COLUMN ECU" menu?
