CABIN
M6040, M7040, WSM
10-S23
(3) Wiper Relay
Connector Voltage
1. Disconnect the 6P connector (2) from wiper relay (1).
2. Turn the main switch to "ON" position.
3. Measure the voltage with a voltmeter across the connector
terminal c and chassis.
4. Measure the voltage with a voltmeter across the connector
terminal e and chassis.
5. If the voltage differs from the battery voltage, the wiring harness,
fuse or main switch is faulty.
9Y1210143CAS0038US0
Wiper Relay Checking
1. Remove the wiper relay.
2. Connect jumper leads across the wiper relay, bulb (2) and 12 V
battery (3) as shown in the figure left.
3. When the jumper lead (4) is connected with terminal a, the bulb
(2) should light up. When it is disconnected, the bulb (2) should
light off.
4. If the bulb does not light up or light off correctly, the relay is
faulty.
9Y1210143CAS0039US0
Voltage
Terminal c – chassis Approx. battery voltage
Terminal e – chassis Approx. battery voltage
(1) Wiper Relay
(2) 6P Connector
(A) 6P Connector
(Wire Harness Side)
Ampere Bulb
When jumper
lead is
connected
Light up
When jumper
lead is
disconnected
Light off
(1) 6P Connector (Wiper Relay SIde)
(2) Bulb
(3) Battery
(4) Jumper Lead
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