PRE-RELEASE
Test readings, control module connections
| Test readings, control module connections |
| Remember |
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Note the test conditions and use common sense when assessing the test result.
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The specified test readings are with the ignition ON unless otherwise stated.
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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 the test readings do not indicate whether the actuator is working.
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If any 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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The specified test readings refer to those obtained with a calibrated Fluke 88/97.
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The test values %(+) and ms(+) indicate the pulse ratio and pulse duration of the signal. A scan tool for measuring pulse ratio and pulse duration must be used. The (+) sign indicates a positive trigger pulse, TRIG+.
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| K12 |
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Pin
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Pin BOB
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Lead colour
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Component/
Function |
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 (K12)
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21
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YE/GY
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Battery Voltage +15
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In
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21-B+
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<0.5 V
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2 (K12)
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22
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BK
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Ground
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In
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22-B-
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<0.5 V
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3 (K12)
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23
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BK
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Ground
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In
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23-B-
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<0.1 V
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4 (K12)
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24
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GN
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P-bus (+)
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In/Out
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24-22
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2.5 V
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5 (K12)
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25
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GN
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I-bus (+)
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In/Out
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25-22
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2.5 V
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6 (K12)
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26
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YE/GY
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Battery Voltage +15
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In
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26-B+
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<0.5 V
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7 (K12)
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27
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RD
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Battery Voltage +30
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In
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27-B+
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<0.5 V
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8 (K12)
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28
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YE/WH
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Ground, Sensor ground, fuel level sensor
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Out
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28-B-
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<0.1 V
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9 (K12)
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29
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GY/WH
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Sensor, fuel level
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In
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29-28
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0.5-3.7 V
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10 (K12)
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30
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OG/WH
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Wheel speed, Rear left
|
In
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Rotate wheel slowly
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30-32
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0 V/B+
(LP Hlp LOp ) |
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Rotate wheel 1/2 revolution per second
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30-22
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15 Hz
50% (LP Hlp LOp ) |
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11 (K12)
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31
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WH
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P-bus (-)
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31-22
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2.5 V
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12 (K12)
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32
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WH
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I-bus (-)
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32-22
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2.5 V
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> = greater than; < = less than; ~ = alternating current (LP: LOGIC PROBE P = select pulse; p = visible pulse)
| K20 |
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Pin
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Pin BOB
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Lead colour
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Component/
Function |
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 (K20)
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1
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BU
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Warning lamp, AIRBAG
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In
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On
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1-B-
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0 V
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Off
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1-B-
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B+
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||||||
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2 (K20)
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2
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YE
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Engine oil pressure warning lamp
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In
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On
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2-B-
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0 V
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Off
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2-B-
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B+
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||||||
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3 (K20)
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3
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GN/BK
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Warning lamp, charging
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In
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On
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3-B-
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0 V
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Off
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3-B-
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B+
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||||||
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4 (K20)
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4
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No connection
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5 (K20)
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5
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No connection
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6 (K20)
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6
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No connection
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7 (K20)
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7
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No connection
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8 (K20)
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8
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No connection
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9 (K20)
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9
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GY/RD
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Lights-on indicator lamp
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In
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On
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9-B-
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B+
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Off
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9-B-
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0 V
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||||||
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10 (K20)
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10
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GN/GY
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ABS warning lamp
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In
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On
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10-B-
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0 V
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Off
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10-B-
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B+
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11 (K20)
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11
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RD/BK
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Warning lamp, handbrake
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In
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On
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11-B-
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0 V
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Off
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11-B-
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B+
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12 (K20)
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12
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BN/WH
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Warning lamp, brake fluid level
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In
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On
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12-B-
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0 V
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Off
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12-B-
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B+
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13 (K20)
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13
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No connection
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14 (K20)
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14
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No connection
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15 (K20)
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15
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GY
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Main beam indicator lamp
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In
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On
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15-B-
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B+
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Off
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15-B-
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0 V
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||||||
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16 (K20)
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16
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No connection
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17 (K20)
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17
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No connection
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18 (K20)
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18
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No connection
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19 (K20)
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19
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No connection
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20 (K20)
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20
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No connection
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> = greater than; < = less than; ~ = alternating current (LP: LOGIC PROBE P = select pulse; p = visible pulse)
