Test readings, control module connections
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Test readings, control module connections
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The following pages contain readings and instructions for measuring signals and levels for SPA (Saab Parking Assistance).
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Note the test conditions and use common sense when assessing the test result.
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The specified readings are with the ignition ON unless stated otherwise.
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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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Finally, check the control module outputs. Remember that these readings are not an indication that the actuator is in working order.
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If a reading is not OK, consult the wiring diagram to trace the leads, connectors or components which should be checked more thoroughly.
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Specified values concern a calibrated Fluke 88/97.
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Readings % (+) and ms (+) indicate the signal pulse ratio and pulse width respectively. 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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Pin
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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 reading
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1
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I-BUS
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In/Out
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Ignition ON
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1 - B-
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2.5 V
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2-18
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No connection
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Pin
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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 reading
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1
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Voltage/sensor
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Out
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Ignition ON
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1 - 2
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B+
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2
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Ground/sensor
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Out
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Ignition ON
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B+ - 2
2 - B-
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B+
<0.5 V
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3
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Right outer sensor, communication
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In/Out
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Ignition ON
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1 - 3
3 - 2
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8V
95-105 kΩ
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4
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Centre right sensor, communication
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In/Out
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Ignition ON
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1 - 4
4 - 2
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8V
95-105 kΩ
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5
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Centre left sensor, communication
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In/Out
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Ignition ON
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1 - 5
5 - 2
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8V
95-105 kΩ
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6
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Left outer sensor, communication
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In/Out
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Ignition ON
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1 - 6
6 - 2
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8V
95-105 kΩ
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7
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Battery voltage +30
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In
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Ignition ON
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7 - 8
B+ - 8
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B+
B+
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8
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Ground
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In
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Ignition ON
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8 - B-
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<0.5 V
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9-12
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No connection
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