Honda Civic Service Manual page 1638

Lighting System
Daytime Running Lights Control Unit Input Test (Canadal
2 .
3.
L
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 -
ning lights control unit.
Inspect the connector and socket terminals to be
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.
-
lf all the input tests prove OK, the control unit
must be faulty; replace it.
Cavity Wire TGst condition
Test: Desired result Possible cause it result is not obtained
BLK
U n d e r
a l l c o n d i t i o n s
Check for continuity to g.ound:
There should be continuity.
. 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 ground:
There should be battery voltage.
B l o w n N o . 2 0 ( 1 0 A ) f u s e i n t h e
under-dash fuse/relay box
An open in the wire
e t
YEUBLK
lgnition switch ON (ll)
Check for voitage to ground:
There should be battery voltage.
B l o w n N o . 1 8 { 7 . 5 A ) f u s e i n t h e
under-dash luse/relay box
Faulty ignition switch
An open in the wire
A 4
RED
Combination light
switch in " =D " posi-
U O n
Check for voltage to ground:
There should be battery voltage.
Blown No. 48 (30 A) tuse in the
under-hood fuse/relay box
Faulty combination light switch
An open in the wire
A1
WHT/RED
Combination light
switch OFF; connect a
jumper wire between
the YEUBLK and
WHT/RED terminals,
then turn the ignition
switch ON (ll)
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
indicator should come on).
. Poor ground (G201, G202, G40'1,
G402)
. B l o w n b u l b s
. Faulty daytime running lights
resrstor
. An open in the wire
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.
B l o w n N o . 2 5 ( 7 . 5 A ) f u s e i n t h e
under-dash f use/relay box
Blown brake system light
An open in the wire
REDiGRN
Parking brake lever Lrp
Check for continuity to groundl
There should be continuity.
. Faulty parking brake switch
. A n o p e n i n t h e w i r e
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