Motor Park Test
- Ignition switch must be on for all tests. With system operating in "Low", turn switch off with wiper blades in straight-up position. Blades should complete cycle and return to position below windshield. If not, check as follows:
- Remove connector and check for battery voltage at circuit 65. See Fig 1 .
If voltage is not present, service circuit as required. If voltage is present, check ground. If ground is poor, check switch cover screw, and motor ground strap for tightness.
- If ground is good, remove motor connections and check for continuity between circuits 28 and 56 in wiring harness. If no continuity, service circuit. If continuity exists, check for ground at circuit pin 28 on motor. If open, service park switch.
- If ground exists, check for continuity between circuits 61 and 63 in wiring harness. If continuity exists, check for continuity between circuit pins 63 and 65 on motor. If open, replace wiper switch.
- If no continuity exists between circuits 61 and 63 in wiring harness, check for continuity between terminals "?" and "G" on wiper switch. If no continuity, replace switch. If continuity exists, replace governor.
Courtesy of FORD MOTOR CO.