GMC 1976 ZEO 6083 Maintenance Manual page 582

9- 50
STEERING
STEERING COLUMN TROUBLE DIAGNOSIS (Cont'd .)
KEY BUZZER DIAGNOSIS
Condition Possible Cause Correction
E. If the lights do not
E. Replace fuse block.
flash, check wiring har-
ness "K" lead (brown) for
open between hazard
flasher and harmonica con-
nector . If open, fuse
block is defective.
Condition Possible Cause Correction
Buzzer does not sound A. Defective buzzer . A . Replace buzzer .
with key fully inserted
in lock cylinder with
the entrance door open .
B . Bad connection at B. Connect securely .
buzzer .
C. Power not available C. Check continuity of chassis
to buzzer . wiring and repair as required .
D . Door jamb switch D. Readjust or replace-as required .
misadjusted or in-
operative.
E. Short in chassis E. Check by separating chassis to
wiring .
column connector. Connect "E"
(black) and "F" (black w/pink
stripe) female contacts on the
chassis side (figure 67) . Bent paper
clip will work if buzzer sound- .
continue diagnosis. If not, locate,
and repair chassis wiring, use
manual as guide.
NOTE 1 : If the buzzer fault has not yet been detected, connect a continuity meter
_ (light) to the male "E" and "F" connector contacts (figure 68). Insert the key
the full depth into the lock cylinder .
If contact is made with the key in, and is not made with it out, the function
is normal . Retrace initial diagnostic steps .
If contact is not established, the fault is in the column . Proceed to Note 2.