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Ford ES — Testing for Grounds

For the Ford ES.

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Before you start

  • NOTE: FIELD

Procedure

  1. Perform tests as follows:
  2. Connect ohmmeter leads between F1+ and rotor
  3. If meter registers, rotor is grounded.
  4. Replace grounded rotor with new, identical part.
  5. Remove rotor: leads F1+ and F2- from rotating
  6. Using ohmmeter, check resistance between F1
  7. Replace defective rotor with new, identical part if
  8. Inspect all wires for breaks, loose connections,
  9. Remove wires from terminals at each end and
  10. Using an ohmmeter, check each wire against
  11. Reconnect or replace wires according to
  12. Stop engine.
  13. Disconnect and if necessary, label the following
  14. Remove four screws at corners.
  15. Remove used PC board.
  16. Install new PC board; secure with four screws.
  17. Reconnect wires removed in step 2 at the proper
  18. Place jumper W10 at proper terminals for your
  19. Perform Voltage Calibration and Stability Ad-
  20. 1 / 2 1

Specs & torque values

  • Connect leads of ohmmeter between each CR lead
  • ohmmeter. An ohmmeter reading less than infinity
  • For these tests, use an ohmmeter on R x 100 scale.
  • 2. Connect ohmmeter leads between F1+ and rotor
  • 2. Using ohmmeter, check resistance between F1
  • OHMMETER -
  • Using an ohmmeter set at R x 100, test each stator
  • one megohm indicates a ground.
  • OHMS @ 20°C (68°F)
  • using an ohmmeter, check each wire end to end
  • 3. Using an ohmmeter, check each wire against

Source: manual:0900-0335_Service Manual Ford Engine Detector I1_198207.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.