Repair and Diagnosis: Testing and Inspection

Test Readings, Control Module Connections

Scope





Values and directions for measuring signals and levels on the control module can be found on the following pages.

Remember

^ Note the test conditions, and use common sense when assessing the test results.
^ First check that the control module is supplied with current 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 the actuator is working.
^ If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components that ought to be checked more thoroughly.





^ The test readings given apply to 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+.