Field Block Tests

Using an ohmmeter, test for continuity from outer brush terminal to R-3 field terminal; circuit should show continuity. See Fig 1. Test for continuity from inner brush terminal to J-2 field terminal; circuit should show continuity. See Fig 2.
Test for continuity from J-2 field terminal to R-3 terminal; circuit should show no continuity. See Fig 3. Turn field block over and test for continuity across radio suppression capacitor terminals; circuit should show no continuity. See Fig 4. If field block does not test as specified, replace field block.

Fig 1: Field Block R-3 Terminal Test (Denso)

Courtesy of CHRYSLER MOTORS.

Fig 2: Field Block J-2 Terminal Test (Denso)

Courtesy of CHRYSLER MOTORS.

Fig 3: Field Block R-2 to J-3 Terminal Tests (Denso)

Courtesy of CHRYSLER MOTORS.

Fig 4: Field Block Radio Capacitor Test (Denso)

Courtesy of CHRYSLER MOTORS.