Points to Remember

SOME IMPORTANT POINTS TO REMEMBER:
- Readings must be taken with a Breakout Box (BOB) connected between the control module and the control module connector.

- Several voltage levels must be regarded as guiding values. Your common sense should tell you whether a reading is correct or not.

- If any test reading is obviously wrong, use the wiring diagram to trace the leads, connectors or components which you consider ought to be checked more thoroughly.

- References in the tables at "Test Readings" refer to the location at which the principle of operation of the signal concerned is described, and also to the fault diagnosis schedule containing a complete description of the diagnostic procedure to be followed.