Test values and control module connections for Popular
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Test values and control module connections for Popular
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Values and instructions for testing the voltage levels of the control modules are found under the relevant headed sections.
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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 module 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 (+) symbol indicates a positive trigger pulse, TRIG+.
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Main unit connections (26-pin)
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> = greater than; < = less than; ~ = AC voltage (LP: LOGIC PROBE P = select pulse; p = visible pulses)
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 value
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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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RD/BU
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Power supply +15:
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In
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Ignition ON
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2-4
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B+
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3
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No connection
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4
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BK
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Ground:
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In
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4 - good grounding point.
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<0.5V
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5
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No connection
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6
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YE
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Telephone mute
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In
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No telephone call
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6-4
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4-6 V
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Telephone system
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Telephone call
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6-4
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<2 V
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7
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GN
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Trigger voltage:
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Out
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Main unit on
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7-4
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8
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RD
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Power supply +30:
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In
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8-4
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B+
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9
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BU/WH
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Speaker, right rear (-)
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Out
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Music playing
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9-4
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0-2 V AC. Dependent on volume control. The test reading should vary with the volume of the music.
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10
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GY
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Speaker, right front (-)
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Out
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Music playing
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10-4
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0-2 V AC. Dependent on volume control. The test reading should vary with the volume of the music.
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11
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BN
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Speaker, left front (-)
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Out
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Music playing
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11-4
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0-2 V AC. Dependent on volume control. The test reading should vary with the volume of the music.
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12
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GN
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Speaker, left rear (-)
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Out
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Music playing
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12-4
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0-2 V AC. Dependent on volume control. The test reading should vary with the volume of the music.
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13
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RD/WH
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Speaker, right rear (+)
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Out
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Music playing
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13-4
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0-2 V AC. Dependent on volume control. The test reading should vary with the volume of the music.
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14
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BN/RD
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Speaker, right front (+)
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Out
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Music playing
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14-4
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0-2 V AC. Dependent on volume control. The test reading should vary with the volume of the music.
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15
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BN/WH
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Speaker, left front (+)
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Out
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Music playing
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15-4
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0-2 V AC. Dependent on volume control. The test reading should vary with the volume of the music.
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16
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BN/WH
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Speaker, left rear (+)
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Out
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Music playing
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16-4
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0-2 V AC. Dependent on volume control. The test reading should vary with the volume of the music.
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17
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WH
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I-BUS (-)
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In/Out
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Ignition ON
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17-4
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2-3 V
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18
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GN
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I-BUS (+)
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In/Out
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Ignition ON
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18-4
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2-3 V
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19
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No connection
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20
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BK
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CD changer RH line input (-)
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In
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Music playing
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20-21
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0-2 V AC. The test reading should vary with the volume of the music.
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21
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BN
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CD changer RH line input (+)
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In
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Music playing
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21-20
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0-2 V AC. The test reading should vary with the volume of the music.
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22
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BK
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Phone line input, ground
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In
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-
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-
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-
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Telephone system
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23
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GY/WH
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Phone line input, signal
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In
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Telephone system
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24
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No connection
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25
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RD/WH
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CD changer LH line input (-)
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In
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Music playing
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25-26
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0-2 V AC. The test reading should vary with the volume of the music.
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26
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BU/WH
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CD changer RH line input (+)
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In
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Music playing
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26-25
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0-2 V AC. The test reading should vary with the volume of the music.
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