Honda Civic Service Manual page 2030

Power Door Locks (cont'd)
Keyless Receiver Unit Input Test
The following tests are pertormed with A (Main) and B (Keyless) disconnected from the audio unit.
Terminal
No.
Wire
Color
Test Conditlon
Test: Desired Rasult
Possible Cause it resull is not obtained
4
WHT/BLU Under all conditions
Check for vollage to ground:
There should bs battery
voltage.
a
Blown No. 47 (7.5A) tuse in the
under-hood fuss/relay box
An open in the wire o
5
YEURED
lgnition switch ACC (l)
Check lor voltage to ground:
Th€re should be battery
voltage.
a
Blown No. 28 (10A) fuse in the
underdash fusg/relay box
An open in the wire
a
Terminal
No.
Wire
Color
Test Condiiion
Test: Desired Result
Possible Cause if rssult i3 not obtalned
BLU/RED
lgnition key inserted
into the ignition key
switch
Check for voltage to ground:
There should bs 1 V or less.
a
Poor ground (G401, G402)
Faulty ignition key switch
An open in the wire
Short in the wire
a
a
a
lgnition key r€moved
trom the ignition key
switch
Check lor voltage to ground:
There should be 4 V or more.
3 BLUI/EL Under all conditions
Check for continuity between
the audio unit 16P connector
No- 3 terminal and power door
lock control unit 12P connsctor
No. 6 terminal: There should
be continuity.
I An open in the wire
6
BLK/YEL lgnition switch ON (ll)
Check for voltage to ground:
Thers should be battery
vollage.
.
Blown No. 14 (7.5A) fuse in the
under-dash fuse/relay box
. An open in the wire
8
LT GRN/
BLK
Ceiljng light switch in
"middle position"
Connect to ground: The ceiling
light should come on.
a
Blown No. 43 (7.5A) fuse in the
undsr-hood fuse/relay box
Blown ceiling light bulb
Faulty ceiling light
An open in the wire
a
a
o
1 4
LT GRN/
R E D
Each door oponed,
one at a time
Check for continuity to ground:
There should be continuity.
a
Faulty door switch
An open in lhe wire
a
t c
BLK Under all conditions
Check for continuity to ground:
There should b€ continuity.
a
Poor ground (G401, G402)
An open in the wire
a
16 GRY
Under all conditions
Conn€ct to ground:
Horn should sound.
. Blown No.52 (15A) fuse in the
under-hood tuse/relay box
.
Faulty horn
.
Faulty horn relay
. An open in the wire
130-6