TEST OR INSPECTION
Check for continuity across crew cab wire harness wire 1640 from driver side door
switch connector to a known good ground.
If continuity is present, replace driver side door switch (WP 0385).
If continuity is not present, repair wire 1640 in crew cab wire
harness (TM 9-2320-325-14&P), or replace crew cab wire
harness (WP 0446).
Close passenger side crew cab access door. Check if both red dome lights operate
with push buttons.
If both red dome lights do not operate with push buttons, go to Step 15.