Control module connection test values, rain sensor
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Control module connection test values, rain sensor
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This section contains the readings and instructions for measuring voltage levels on the SID unit.
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Note the test conditions and use common sense when assessing the test result.
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First check that the control module has a power supply and is grounded.
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Then check all sensor inputs and signals from other systems.
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Lastly, check the control module outputs. Remember, the test values do not say anything about whether or not the actuator is in working order.
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If a reading is incorrect, consult the wiring diagram to trace the leads, connectors or components which should be checked more thoroughly.
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The specified test readings refer to those obtained with a calibrated Fluke 88/97.
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The test readings show the signal's pulse ratio and pulse width. A test instrument with pulse ratio and pulse width measurement must be used. The sign indicates a positive trigger pulse, TRIG+.
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Control module connection
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Pin no.
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Cable colour
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Component/
function
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In/Out
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Test conditions
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Across
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Test value
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See
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1
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VT
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Power supply +54
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In
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Turn Ignition On
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1-4
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B+
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1-B+
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<0.5V
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2
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BK/YE
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Wiper motor
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In
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Windscreen wipers Activated
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2-4
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B+
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Front Wiper Park Switch
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2-4
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<0.5V
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3
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GN/GY
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Wiper stalk potentiometer
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In
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IGNITION OFF
Control module not connected
Low sensitivity
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3-4
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0.7-1.4 kΩ
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IGNITION OFF
Control module not connected
High sensitivity
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3-4
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0-0.7 kΩ
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4
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BK
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Ground
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In
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Turn Ignition On
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4-B+
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B+
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4-B-
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<0.5V
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5
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YE/GN
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High speed, wiper stalk switch position 3
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In
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Turn Ignition On
Wiper stalk switch in position 3
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5-4
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B+
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5-B+
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<0.5V
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6
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BK/YE
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Washer, wiper stalk switch
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In
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Washer Activated
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6-4
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B+
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7
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RD/BU
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Low speed
High speed
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Out
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Wiper stalk switch, auto position
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7-4
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<0.5V
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8
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GN/WH
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High speed
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Out
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Wiper stalk switch, auto position
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8-4
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<0.5V
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9
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No connection
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