Control Unit
- Connect jumper wires from positive post of battery to terminal 6 and from negative post of battery to terminal 5. Connect a test light between terminals 14 and 13. Place a jumper wire between terminals 12 and 10, or 12 and 8. Test lamp should light and go out in about 15 seconds. With jumper wire between terminals 12 and 11, or 12 and 9, lamp should not light. See Fig 1 .
- Connect additional jumper wires from positive battery post to both terminals 2 and 3. Add a second negative jumper wire to terminal 4. Place a jumper wire between terminals 12 and 9, or 12 and 8. Test light should come on and go out in about 15 seconds. With jumper wire between 12 and 11, or 12 and 10, test light should not come on.
- Connect jumper wire light between terminals 12 and 9. Remove positive jumper wire from terminal 3, leaving other connections the same. The test light should go out in 10 seconds.
- At this point, there should be positive jumper wires to terminals 2 and 6 only, and negative jumper wires to terminals 5 and 4. With jumper wire between terminals 12 and 10, or 12 and 8, test light should come on and go out in about 15 seconds. Lamp should not light when jumper wire is between 12 and 11, or 12 and 9.
- Disconnect negative wire to terminal 4, leaving only 1 negative wire at terminal 5. With jumper wire is connected between terminals 12 and 11, or 12 and 8, test light should come on and go out in about 15 seconds. With jumper wire between 12 and 10, or 12 and 9, lamp should not come on.
- In all control unit tests, if results are as indicated the unit is good. If not, unit should be replaced.