Preliminary Information

Scope
On the following pages are listed values and instructions for measuring signals/levels in the Electronic Display Unit (EDU) control module.

Remember:
- The measurements should be made using a breakout box (BOB) connected between the control module and the control module connector
- A number of voltage levels must be regarded as guide levels. Use common sense when deciding if a measured value is correct or not.
- If any measured value is incorrect, use the wiring diagram to decide which leads, connectors or components should be tested further
- The page references in the table refer partly to the description of function for the particular signal and partly to the fault diagnosis schedule with full description of action.
- All data is for warm engine
- Unless otherwise stated, the ignition should be connected
- Data given is for calibrated FLUKE 88/97