Test C: Power Windows Completely Inoperative (Coupe)
- Disconnect master window/door lock switch harness connector C502. Turn ignition switch to RUN position. Measure voltage at terminal No. 10 (Light Blue/Black wire) at master window/door lock switch harness connector C502. See Fig 1
. If battery voltage exists, go to next step. If battery voltage does not exist, repair power distribution circuit. See WIRING DIAGRAMS
.
- Turn ignition switch to LOCK position. Measure resistance between ground and terminals No. 7, 9, 12 and 14 (all Black wires) at master window/door lock switch harness connector C502. If all resistance readings are 5 ohms or less, replace master window/door lock switch. If any resistance reading is greater than 5 ohms, repair open in Black wire.
Courtesy of FORD MOTOR CO.