Eclipse V6-3.0L SOHC (2003)
Rear Washer Motor Power Supply Circuit Part 2
CIRCUIT OPERATION
The rear washer switch sends a signal through the column-ECU (incorporated in the column switch) to the ETACS-ECU. If the column-ECU sends a rear
washer switch "ON" signal to the ETACS-ECU, the ETACS-ECU turns on the relay (incorporated in the ETACS-ECU), thus causing the rear washer
motor to be turned on.
TECHNICAL DESCRIPTION (COMMENT)
If the rear washer does not work normally, the rear washer motor, the column switch (windshield wiper and washer switch) or the front-ECU may be
defective.
TROUBLESHOOTING HINTS
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Malfunction of the rear washer motor
-
Malfunction of the column switch (windshield wiper and washer switch)
-
Malfunction of the ETACS-ECU
DIAGNOSIS
Required Special Tools:
-
MB991223: Test Harness Set
-
MB991502: Scan Tool (MUT-II)
-
MB991862: SWS Monitor Kit
STEP 1. Check the rear wiper.
Q: Does the rear wiper operate?
YES: Go to Step 2.
NO: Refer to Inspection Procedure H-1 "Rear wiper does not work at all."
STEP 2. Check the input signal by using "FUNCTION DIAGNOSIS" of the SWS monitor.
Set each switch to the following condition before checking input signals from the rear washer switch:
-
Ignition switch: ACC
-
Rear washer switch: ON
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.
