Honda Civic 1998 Service Manual page 1248

Lighting System
Daytime Running Lights Gontrol Unit Input Test (Canadal
2 .
3 .
1 .
R e m o v e t h e d r i v e r ' s d a s h b o a r d l o w e r c o v e r a n d
knee bolster (see section 20).
D i s c o n n e c t t h e c o n n e c t o r s f r o m t h e d a y t i m e r u n -
n i n g l i g h t s c o n t r o l u n i t .
I n s p e c t t h e c o n n e c t o r a n d s o c k e t t e r m i n a l s t o b e
sure they are all making good contact.
lf the terminals are bent. loose or corroded, repair
them as necessary, and recheck the system.
l f t h e t e r m i n a l s l o o k O K , m a k e t h e f o l l o w i n g
input tests at the connector.
-
lf any test indicates a problem, find and correct
the cause, then recheck the system.
-
l{ all the input tests prove OK, the control unit
must be faulty; replace it.
Cavity
Test condition
Test: Desired rgsult
Wire
Possible cause il result is not obtained
B1 BLK
U n d e r a l l c o n d i t i o n s C h e c k f o r c o n t i n u i t y t o g r o u n d :
T h e r e s h o u l d b e c o n t i n u i t y .
. Poor ground (G401. G402)
. An open in the wire
A2 BLK /VHT
U n d e r a l l c o n d i t i o n s Check for voltage to groundl
There should be battery voltage.
. Elown No. 20 (10 A) fuse in the
under-dash fuse/relay box
. An open in the wire
8 2
YEUBLK
Ignition switch ON (ll)
Check for voltage to ground:
There should be battery voltage.
Blown No. '18 (7.5 A) fuse in the
under-dash fuse/relay box
Faulty ignition switch
An open in the wire
RED
C o m b i n a t i o n l i g h t
switch in
"=d' position
Check for voltage to ground:
There should be battery voltage.
Blown No. 48 (30 Al fuse in the
under-hood fuse/relay box
Faulty combination light switch
An open in the wire
A1 WHT/RED
C o m b i n a t i o n l i g h t
switch OFF; connect a
jumper wire between
t h e Y E U B L K a n d
WHT/RED terminals,
t h e n t u r n t h e i g n i t i o n
s w i t c h O N ( l l )
H e a d l i g h t s ( h i g h b e a m ) s h o u l d
c o m e o n , ( a n d h i g h b e a m
i n d i c a t o r s h o u l d c o m e o n ) .
P o o r g r o u n d ( G 2 0 1 , G 2 0 2 . G 4 0 1 ,
G 4 0 2 )
Blown bulbs
Faulty daytime running lights
resistor
An open in the wire
B 3 G R N / R E D
l g n i t i o n s w i t c h O N ( l l ) ,
brake fluid reservoir
full, and parking brake
lever down
Connect to ground: The brake
system light should come on.
Blown No. 25 {7.5 A) fuse in the
under-dash fuse/relay box
Blown brake system light
An open in the wire
B6
RED/GRN
Parking brake lever up
Check for continuity to ground:
There should be continuity.
. Faulty parking brake switch
. An open in the wire
2 3 - 1 5 0