Lead 10 at Upper Rear Door Switch.
o Disconnect lead AAF from switch connector. Using a multimeter,
check for voltage by placing the red probe in the switch and
grounding the black probe (Fig. 56). Set the MASTER switch to
the ON position and hold the upper rear door switch in the UP
If no voltage is indicated, replace the upper rear
door switch. If voltage is indicated, set the MASTER switch to
the OFF position, reconnect lead AAF to the switch, and continue
Lead AAF at Upper Rear Door Switch.