Honda Civic 2002-2003 Service Manual page 924

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5. With the connectors still disconnected, make these input tests at the connector.
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.
Cavity
Wire Test condition Test: Desired result
K2
!
BLU/ORN
i
Under all conditions
Check for continuity between the K2
1
terminal and the keyless receiver
unit 5P connector No.2 terminal:
There should be continuitY'.:
07 GRN/RED
Ceiling light switch in Attach to ground:
middle position.
Ceiling light(s) should come on.
I
X8
I
WHT/BLK
I
Under all cond;';ons
Attach to ground:
Ignition key light should come on.
I
!
r:-:'I
I..!:!.I
Possible cause if result is not obtained
• An open in the wire
• Blown No.3 (7.5A) fuse in the under hood
fuse/relay box
• Blown bulb
• Faulty ceiling light
• An open in the wire
o
Blown No.3 (7.5A) fuse in the under hood
fuse/relay box
o
Faulty ignition key light (LED)
o
An open in the wire
6. Reconnect the connectors 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.
o
If all the input tests prove
OK,
the multiplex control unit must be faulty. Replace the under-dash fuse/relay box assembly.
Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
P18 RED
Hatch open Check for voltage to ground:
POOr ground (G552)
There should be 1 V or less. Faulty hatch latch switch
o
An open 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 ground
Q3 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 open in the wire
Driver's door closed Check for voltage to ground: • Faulty driver's door switch
There should be 5 V or more.
o
Short to around
O'
LT GRN/
Passenger's door Check for voltage to ground:
o
Faulty passenger's door switch
RED
ODen There should be 1 V or less.
o
An ODen in the wire
Passenger's door . Check for voltage to ground:
Faulty passenger's door switch
closed There should be 5 V or more. Short to around
X5 RED/WHT Ignition key inserted Check for voltage to ground: Poor ground (G401)
into the ignition There should be 1 V or less.
Faulty ignition key switch
switch
o
An aDen in the wire
Ignition key removed Check for voltage to ground:
o
Faulty ignition key switch
from the ignition There should be 5 V or more.
I
o
Short to ground
switch
Y8 YEURED Driver's door lock . Check for voltage to ground:
o
Poor ground (G501)
!
knob switch locked There should be 1 V or less.
o
Faulty driver's door lock knob switch
• An open in the wire
I
Driver's door lock Check for voltage to ground:
o
Faulty driver's door lock knob switch
knob switch unlocked There should be 5 V or more.
o
Short to qround
22-93