Honda Civic 2002-2003 Service Manual page 987

Keyless/Power Door Lock System
Control Unit Input Test (cont'd)
5. Reconnect all connections to the under-dash fuse/relay box, and make these input tests at the appropriate connectors on the under-dash
fuse/relay box.
If any test indicates a problem, find and correct the cause, then recheck the system .
• If all the input tests prove OK, go to step 6.
CaYi~
Wire
Test condition
Test: Desired result Possible cause if result is not obtained
C11 BLU Under all conditions Attach to ground:
Blown No.2 (15A) fuse in the under-
Parking, side marker, license
hood fuse/relay box
plate lights, and taillights should Faulty taillight relay
come on. • Faulty under-dash fuse/relay box
• An
oDen
in the wire
F7 BLU/RED Under all conditions Attach to ground:
• Blown No. 15 or 17 (15A) fuse in the
I
Headlights should come on. under-hood fuse/relay box
1
o
Faulty headlight relay 1 or 2
o
An oDen in the wire
J2 WHT/RED
I
Under all conditions Check for voltage to ground:
o
Blown No.9 (15A) fuse in the under-
I
There should be battery voltage.
hood fuse/relay box
o
An aDen in the wire
J4 BLK
!
Under all conditions
Check for voltage to ground:
o
Poor ground (G501)
There should be 1 V or less.
o
An aDen in the wire
J6 ORN
!
Under all conditions
Attach to ground: Blown NO.7 (15A) fuse in the under-
I
The horns should sound. hood fuse/relay box
Faulty horn relay
I
o
Faulty horns
o
An aDen in the wire
J7 WHT Under all conditions Check for voltage to ground:
o
Blown No. 16 (20A) fuse in the under-
There should be battery voltage. hood fuse/relay box
o
An aDen in the wire
P18 RED Hatch open
: Check for voltage to ground:
o
Poor ground (G552)
!
There should be 1 V or less.
o
Faulty hatch latch switch
o
An aDen in the wire
Hatch closed Check for voltage to ground:
o
Faulty hatch latch switch
There should be 5 V or more.
o
Short to around
03
GRN
Driver's door open Check for voltage to ground:
o
Faulty driver's door switch
There should be 1 V or less.
o
An aDen in the wire
i
Driver's door closed Check for voltage to ground:
o
Faulty driver's door switch
There should be 5 V or more.
o
Short to around
Q4
1
LTGRN
Passenger's door open Check for voltage to ground:
o
Faulty passenger's door switch
/RED
There should be 1 V or less.
o
An aDen in the wire
I
Passenger's door closed
Check for voltage to ground:
o
Faulty passenger's door switch
There should be 5 V or more.
o
Short to around
X5
i
REDIWHT Ignition key inserted into Check for voltage to ground:
o
Poor ground (G401)
the ignition switch
There should be 1 V or less.
o
Faulty ignition key switch
o
An open in the wire
Ignition key removed from
Check for voltage to ground: • Faulty ignition key switch
the innition switch There should be 5 V or m9re. __
+-:
Short to nround
Y7 WHT/BLK
Driver's door lock knob Check for voltage to ground: • Poor ground (G501)
switch unlocked There should be 1 V or less.
• Faulty driver's door lock knob switch
- - -
~_IlQQlLnjn~h~_w~r~L _______ . __ . _________
Driver's door lock knob
Check for voltage to ground: • Faulty driver's door lock knob switch
switch locked
There should be 5 V or more.
• Short to Qround
Y8 YELJRED
Driver's door lock knob Check for voltage to ground: • Poor ground (G501)
switch locked There should be 1 V or less.
• Faulty driver's door lock knob switch
o
An onen in the wire
Driver's door lock knob Check-for voltage to ground: Faulty driver's door lock knob switch
switch unlocked
There should be 5 V or more.
Short to around
Y10 WHT/GRN Driver's door lock switch Check for voltage to ground: Poor ground (G501)
unlocked
There should be 1 V or less. Faulty driver's door lock switch
o
An aDen in the wire
Driver's door lock switch in
Check for voltage to ground: : • Faulty driver's door lock switch
neutral
There should be 5 V or more. ~hort to ground
Y12 WHT/BLU Driver's door lock switch
Check for voltage to ground: .• Poor ground (G501)
locked There should be 1 V or less.
,
• Faulty driver's door lock switch
h -
,
• An open in the wire
Driver's door lock switchiri
Check for voltage to ground: Faulty driver's door lock switch
neutral There should be 5 V or more.
o
Short to nround
22-156