Test readings, DVD module (729): Remember:

Note the test conditions and use common sense when assessing test results.
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 readings do not say anything about whether or not the actuator is in working order.
If any reading is not OK, 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 .
Test readings %(+) and ms(+) 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+.