Test readings, control module connections: Scope: Remember

Note the test conditions and use common sense when assessing the test result.
The specified values are with the ignition ON unless otherwise stated.
First check that the control module has a power supply and is grounded.
Then check all sensor inputs and signals from other systems.
Finally, check the control module outputs. Remember that the test readings do not indicate 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 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 must be used. The (+) sign indicates a positive trigger pulse, TRIG+.

Fig 1: View Of Multimeter
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