Test Readings, Control Module Connections: Notes

Fig 1: Testing Readings Control Module Connections

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The following pages contain instructions and values for measuring the control module.

Remember:

Observe the test conditions. Use common sense when evaluating test results.
Unless otherwise stated, the test readings presented are with the ignition switch in the ON position.
Check the following points:
- First check that the control module is supplied with current and grounded.
- Then check all sensor inputs and signals from other systems.
- Check the control module outputs last. Remember that the test readings do not indicate whether or not the actuator is working.
If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components which ought to be checked more thoroughly.
The test readings given apply to a correctly calibrated Fluke 88/97.
The test readings show the pulse ratio and pulse duration of the signal. A test instrument capable of measuring both pulse ratio and pulse duration must be used.

Fig 2: Identifying Temperature Indicator

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