Readings, Control Module Connections, Xenon Headlamps: Remember

Note the test conditions and use common sense when assessing the test result.
First check that the control module has a power supply and is grounded.
Then check all sensor inputs and signals from other systems.
Lastly, check the control module outputs. Remember, the test values do not say anything about whether or not the actuator is in working order.
If a reading is incorrect, consult the wiring diagram to trace the leads, connectors or components which should be checked more thoroughly.
The specified test readings refer to those obtained with a calibrated Fluke 88/97.
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+.

Fig 1: Identifying Test Readings
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