Test readings, control module connections
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Test readings, control module connections
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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 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.
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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 reading
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See
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1
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No connection
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2
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No connection
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3
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No connection
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4
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No connection
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5
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RD
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Battery voltage (+30 circuit)
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In
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Ignition ON.
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5-B+
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<0.5 V
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6
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BU/WH
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Washer fluid level sensor
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In
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Washer fluid present (closed contact).
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6-13
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0 V
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|
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No washer fluid present (open contact).
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6-13
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B+
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7
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OG
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Outside temperature sensor, ground
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-
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Ignition ON.
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7-B-
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<0.1 V
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8
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RD/BU
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Rheostat, ground
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-
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Ignition ON.
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8-B-
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<0.1 V
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9
|
YE
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Steering wheel controls, ground
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-
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Ignition ON.
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9-B-
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<0.1 V
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10
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No connection
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11
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BN/OG
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Horn relay
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Out
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Ignition ON.
Horn NOT activated.
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11-13
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B+
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Horn activated.
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11-13
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0 V
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12
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GN
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Bus (+)
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In/Out
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Ignition ON.
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12-13
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2.5 V
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13
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BK
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Ground
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Out
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Ignition ON.
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13-B-
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<0.5 V
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14
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No connection
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15
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No connection
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16
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No connection
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17
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No connection
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18
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GN/WH
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Coolant level sensor
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In
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Coolant present (closed contact).
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18-13
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0 V
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No coolant present (open contact).
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18-13
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B+
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19
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Parking heater / auxiliary heater
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Out
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Activated
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19-13
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0 V
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Not activated
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19-13
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B+
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20
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GY
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Outside temperature sensor
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In
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Ignition ON.
Temperature readings:
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10°C/50°F
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20-13
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2.49 V
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20°C/68°F
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20-13
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1.72 V
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30°C/86°F
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20-13
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1.43 V
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21
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RD/WH
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Rheostat
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In
|
Ignition ON.
“Max” rheostat position.
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21-13
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0 V
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“Min” rheostat position
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21-13
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3.5 V
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22
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BU
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Steering wheel controls (switches)
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In
|
Ignition ON.
Press the following buttons:
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-
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Horn
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22-13
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0 V
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VOL -
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22-13
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0.7 V
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VOL +
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22-13
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1.2 V
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SRC
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22-13
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1.8 V
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SEEK >>
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22-13
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2.4 V
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<< SEEK
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22-13
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3.0 V
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NXT
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22-13
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3.6 V
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Normal position
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22-13
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4.2 V
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23
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VT/WH
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Filament monitor, front lights
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In
|
Ignition ON.
OFF
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23-13
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B+
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ON
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23-13
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0 V
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24
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WH
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Bus (-)
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In/Out
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Ignition ON.
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24-13
|
2.5 V
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25
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RD/BU
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Battery voltage (+15 circuit)
|
In
|
Ignition ON.
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25-B+
|
<0.5 V
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