1975 Datsun 280z FSM - Spooled up Racing

i
Body Electrical System
i
TROUBLE DIAGNOSES AND CORRECTIONS
Condition
Horn does not operate.
Discharged battery.
Probable cause
(Measure specific gravity of electrolyte.)
Burnt fuse.
Faulty horn button contact.
[Horn sounds when horn relay terminal© is
grounded.]
Faulty horn relay.
[Horn sounds when (2) and (f) horn relay
terminals are connected with a test lead.]
Faulty horn or loose horn terminal connection.
Corrective action
Recharge or replace battery.
Correct cause and replace fuse.
Repair horn button.
Replace horn relay.
Correct horn terminal connection or replace
horn.
Horn sounds
continuously.
Short-circuited horn button and/or horn
button lead wire.
[When black lead wire is disconnected from
horn relay terminal©, horn stops sounding-]
Faulty horn relay.
Repair horn button or its wiring.
Replace horn relay.
Reduced volume and/
or tone quality.
Loose or poor.connector contact.
(Fuse, relay, horn and/or horn button.)
Faulty horn.
Repair.
Replace.
\
BE-58