Mazda 6 2002 Workshop Manual page 921

4. Inspect whether the vehicle speed signal to the wiper and washer switch terminal N (D) is input correctly using
an oscilloscope.
• Connect the oscilloscope probes to the wiper and washer switch terminal N (D) (+) and terminal M (C) (-).
• Set oscilloscope to 1V/DIV (Y), 5ms/DIV (X).
• Verify that the wave pattern below is
displayed while the vehicle is moving at 30
km/h {19 mph}.
Note
• As the vehicle speed increases, the
frequency shortens.
5. If the vehicle speed input signal and continuity for
the wiper and washer switch is correct, inspect
the windshield wiper motor.iSee
WINDSHIELD WIPER MOTOR
• Even if the windshield wiper motor is normal,
if the vehicle-speed-sensing wipers do not
operate correctly, replace the wiper and washer switch.
Rear Wiper and Washer Switch
1. Remove the wiper and washer switch. (See
INSTALLATION)
2. Inspect for continuity between the wiper and
washer switch terminals using an ohmmeter.
• If not as specified, replace the wiper and
washer switch.
End Of Sie
HEADLIGHT CLEANER MOTOR REMOVAL/INSTALLATION
1. Disconnect the negative battery cable.
2. Remove the washer tank. (See
3. Remove the washer fluid-level sensor. (See
INSTALLATION)
4. Remove in the order indicated in the table.
1 Connector
2 Bolt
3 Bracket
4 Headlight cleaner motor
5 Grommet
5. Install in the reverse order of removal.
End Of Sie
WIPER AND WASHER
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INSPECTION)
T–67 WIPER AND WASHER SWITCH REMOVAL/
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T–58 WASHER TANK REMOVAL/INSTALLATION)
T–59 WASHER FLUID-LEVEL SENSOR REMOVAL/
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T
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