Test readings, control module connections
| Test readings, control module connections |
| Scope |
This section contains the readings and instructions for measuring voltage levels on the SID unit.
| Remember |
| • |
Note the test conditions, and use common sense when assessing the test results.
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| • |
First check that the control module is supplied with current and 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 the test readings do not indicate whether or not the actuator is in working order.
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| • |
If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components which ought to be checked more thoroughly.
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| • |
The test readings given apply to 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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Pin No.
|
Cable colour
|
Component/
Function |
In/Out
|
Test conditions
|
Across
|
Test reading
|
See
|
|
1
|
|
No connection
|
|
|
|
|
|
|
2
|
|
No connection
|
|
|
|
|
|
|
3
|
|
No connection
|
|
|
|
|
|
|
4
|
|
No connection
|
|
|
|
|
|
|
5
|
RD
|
Battery voltage (+30 circuit)
|
In
|
Ignition ON.
|
5-B+
|
<0.5 V
|
|
|
6
|
BU/WH
|
Washer fluid level sensor
|
In
|
Washer fluid present (closed contact).
|
6-13
|
0 V
|
|
|
|
|
|
|
No washer fluid present (open contact).
|
6-13
|
B+
|
|
|
7
|
OG
|
Outside temperature sensor, ground
|
-
|
Ignition ON.
|
7-B-
|
<0.1 V
|
|
|
8
|
BU/RD
|
Rheostat, ground
|
-
|
Ignition ON.
|
8-B-
|
<0.1 V
|
|
|
9
|
YE
|
Steering wheel controls, ground
|
-
|
Ignition ON.
|
9-B-
|
<0.1 V
|
|
|
10
|
|
No connection
|
|
|
|
|
|
|
11
|
BN/OG
|
Horn relay
|
Out
|
Ignition ON.
Horn NOT activated. |
11-13
|
B+
|
|
|
|
|
|
|
Horn activated.
|
11-13
|
0 V
|
|
|
12
|
GN
|
Bus (+)
|
In/Out
|
Ignition ON.
|
12-13
|
2.5 V
|
|
|
13
|
BK
|
Ground
|
Out
|
Ignition ON.
|
13-B-
|
<0.5 V
|
|
|
14
|
|
No connection
|
|
|
|
|
|
|
15
|
|
No connection
|
|
|
|
|
|
|
16
|
|
No connection
|
|
|
|
|
|
|
17
|
|
No connection
|
|
|
|
|
|
|
18
|
GN/WH
|
Coolant level sensor
|
In
|
Coolant present (closed contact).
|
18-13
|
0 V
|
|
|
|
|
|
|
No coolant present (open contact).
|
18-13
|
B+
|
|
|
19
|
|
Parking heater / auxiliary heater
|
Out
|
Activated
|
19-13
|
0 V
|
|
|
|
|
|
|
Not activated
|
19-13
|
B+
|
|
|
20
|
GY
|
Outside temperature sensor
|
In
|
Ignition ON.
Temperature readings: |
|
|
|
|
|
|
|
|
10°C/50°F
|
20-13
|
2.49 V
|
|
|
|
|
|
|
20°C/68°F
|
20-13
|
1.72 V
|
|
|
|
|
|
|
30°C/86°F
|
20-13
|
1.43 V
|
|
|
21
|
RD/WH
|
Rheostat
|
In
|
Ignition ON.
“Max” rheostat position. |
21-13 |
0 V |
|
|
|
|
|
|
“Min” rheostat position
|
21-13
|
3.5 V
|
|
|
22
|
BU
|
Steering wheel controls (switches)
|
In
|
Ignition ON.
Press the following buttons: |
|
-
|
|
|
|
|
|
|
Horn
|
22-13
|
0 V
|
|
|
|
|
|
|
VOL -
|
22-13
|
0.7 V
|
|
|
|
|
|
|
VOL +
|
22-13
|
1.2 V
|
|
|
|
|
|
|
SRC
|
22-13
|
1.8 V
|
|
|
|
|
|
|
SEEK >>
|
22-13
|
2.4 V
|
|
|
|
|
|
|
<< SEEK
|
22-13
|
3.0 V
|
|
|
|
|
|
|
NXT
|
22-13
|
3.6 V
|
|
|
|
|
|
|
Normal position
|
22-13
|
4.2 V
|
|
|
23
|
VT/WH
|
Filament monitor, front lights
|
In
|
Ignition ON.
OFF |
23-13 |
B+ |
|
|
|
|
|
|
ON
|
23-13
|
0 V
|
|
|
24
|
WH
|
Bus (-)
|
In/Out
|
Ignition ON.
|
24-13
|
2.5 V
|
|
|
25
|
BU/RD
|
Battery voltage (+15 circuit)
|
In
|
Ignition ON.
|
25-B+
|
<0.5 V
|
|
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