Control Module, TWICE (632)

Measured Values, Control Module Connections

Scope
Nominal values and instructions for measuring voltages on the control module can be found under the respective headings below.

Remember
^ Note the measuring conditions and use common sense when assessing the results.
^ The nominal values shown apply with the ignition switched ON unless otherwise stated.
^ First, check that the power supplies to the module are correct and that it is grounded properly.
^ Then check all the sensor inputs and signals from other systems.
^ Finally, check the outputs. Remember that the measured values do not tell us whether or not the module is functioning properly.
^ If a measured value is incorrect, investigate which leads, connectors or components should then be checked, using the wiring diagram.
^ The nominal values shown below apply when using a calibrated Fluke 88/97.
^ The values % (+) and ms (+) show the pulse ratio and pulse duration of the signal. The test instrument used must be able to measure pulse ratio and pulse width. The (+) sign denotes a positive trigger pulse, TRIG+.