Engine Speed Signal

To test engine speed signal, see Fig 1 or Fig 2 . After completing the tests, retest the vehicle to ensure the faults have been rectified. If faults still persist, recheck using Lucas diagnostic equipment.

Fig 1: Engine Speed Signal Test Procedure No. 8 (1987-88)

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Fig 2: Engine Speed Signal Test Procedure No. 5 (1989-91)

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