Test readings, control module connections
Test readings, control module connections |
The following pages contain the values and directions for measuring signals and levels in the Saab Parking Assistance system, SPA.
Remember |
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Observe the conditions set for testing and use common sense when assessing the results.
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• |
The test values presented apply when the ignition is in the ON position unless otherwise stated.
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• |
First make sure that the control module is receiving power and that it is grounded.
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• |
Then check all the sensor inputs and signals from other systems.
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Finally, check the control module outputs. Remember that the test values do not indicate whether the actuator is working.
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If a test value is incorrect, consult the wiring diagram to trace which leads, connectors and components should be checked more thoroughly.
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The specified test values refer to those obtained with calibrated Fluke 88/97.
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Test values in % (+) and ms (+) show the pulse ratio and pulse duration of the signal. A test instrument capable of giving pulse ratio and pulse duration readings should be used. The plus (+) symbol indicates a positive trigger pulse, TRIG+.
|
Connection K1 |
Pin
|
Colour
|
Component/
function |
In/Out
|
Test conditions
|
Across
|
Test value
|
1
|
RD/BU
|
Ignition voltage
|
In
|
Ignition ON
|
1 - 3
|
B+
|
2
|
RD
|
Battery voltage
|
In
|
Ignition ON
|
2 - 3
|
B+
|
3
|
BK
|
Ground (G5)
|
In
|
Ignition ON
|
B+ - 3
3 - B- |
B+
<0.5 V |
4
|
GN
|
I-BUS
|
In/Out
|
Ignition ON
|
4 - 3
|
2.5 V
|
5
|
WH
|
I-BUS
|
In/Out
|
Ignition ON
|
5 - 3
|
2.5 V
|
6
|
|
No connection
|
|
|
|
|
Connection K2 |
Pin
|
Colour
|
Component/
function |
In/Out
|
Test conditions
|
Across
|
Test value
|
1
|
PK
|
Voltage/sensor
|
Out
|
Ignition ON
|
1 - 2
|
B+
|
2
|
BN
|
Ground/sensor
|
Out
|
Ignition ON
|
B+ - 2
2 - B- |
B+
<0.5 V |
3
|
YE
|
Right-hand outer sensor, communication
|
In/Out
|
Ignition ON
|
1 - 3
3 - 2 |
B+
95-105 kΩ |
4
|
BU
|
Right-hand centre sensor, communication
|
In/Out
|
Ignition ON
|
1 - 4
4 - 2 |
B+
95-105 kΩ |
5
|
OG
|
Left-hand centre sensor, communication
|
In/Out
|
Ignition ON
|
1 - 5
5 - 2 |
B+
95-105 kΩ |
6
|
GY
|
Left-hand outer sensor, communication
|
In/Out
|
Ignition ON
|
1 - 6
6 - 2 |
B+
95-105 kΩ |