Honda Civic 2002-2003 Service Manual page 973

Wipers/Washers
Control Unit Input Test (cont'd)
5. Reconnect the connectors, and 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, the multiplex control unit must be faulty. Replace the under-dash fuse/relay box
assembly.
Cavity Wire Test condition Test: Desired result
I
Possible cause if result is not obtained
J4 BLK
, Under all
Check for voltage to ground: • Poor ground (G501)
I
conditions
There should be 1 V or less. • An open in the wire
Y6
BLK
i
Under all Check for voltage to ground:
• Poor ground (G502)
conditions
There should be 1 V or less.
• An open in the wire
-
B1 WHT/BLU Ignition switch ON Check for voltage to ground: • Blown No. 20 (20A) fuse in the
(II) and washer There should be battery
under-dash fuse/relay box
switch ON voltage. • Faulty wiper/washer switch
"_.
__
.
• An open in th_e wire
B6 BLU/RED
Ignition switch ON Check for voltage to ground:
I
·
Blown No. 20 (20A) fuse in the
(II) and wiper There should be battery under-dash fuse/relay box
switch OFF (wiper
voltage.
·
Faulty wiper/washer switch
motor stopped)
·
Faulty windshield wiper motor
• An open in the wire
G7 BLU/WHT Ignition switch ON
Check for voltage to ground:
·
Blown No. 20 (20A) fuse in the
(II) and wipers in There should be battery
I
under-dash fuse/relay box
! park position
voltage.
·
Faulty windshield wiper motor
• An open in the wire
X7
BLU/BLK Ignition switch ON Check for voltage to ground:
·
Blown No. 20 (20A) fuse in the
(II) and wiper There should be battery under-dash fuse/relay box
switch in INT
voltage.
·
Faulty wiper/washer switch
,
!
• An open in the wire
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