Honda Civic Service Manual page 1408

Troubleshooting -'99 - 00 Models
From page 21-31
Check the blower motor relay:
1. Turn the ignition switch OFF.
2 . R e m o v e t h e b l o w e r m o t o r
r e l a y f r o m t h e u n d e r h o o d
fuse/relay box, and test it- (see
page 21'49).
Replace the blower motor relay.
Check the under-hood tuse/relay
box:
Measure the voltage between the
N o . 3 t e r m i n a l o f t h e b l o w e r
motor relay 4P socket and body
ground.
Check tor an open in the wire:
1. Turn the ignition switch ON (ll).
2. Measure the voltage between
t h e N o . 4 t e r m i n a l o f t h e
blower motor relay 4P socket
and body ground.
Repair opon in lhe wire between
the No. 17 fuse and the blowet
ls there battery voltage?
Check for an open in the wire:
1. Turn the ignition switch OFF.
2. Check for continuity between
t h e N o . 2 t e r m i n a l o f t h e
blower motor relay 4P socket
and body ground.
Check lor an ooen in the wire
between the blowor motor relay
and body ground. It the wiie is
O K , c h e c k f o r p o o r g r o u n d a t
G401 and G402.
l s t h e r e c o n t i n u i t y l
R e p a i r o p e n i n t h e B L U / W H T
wiae between the blower motor
relay and the blower motor,
BLOWER MOTOR RELAY 4P SOCKET
21-32