Honda 2002 Accord Manual page 1324

Power Windows
Control Unit Input Test (cont'd)
12. With the door multiplex control unit still disconnected, make these input tests at the connectors.
• If any test indicates a problem, find and correct the cause, then recheck the system.
• If all the input test prove OK, goto step 13.
Cavity Wire
Test condition
Test: Desired result Possible cause if result is not obtained
A1 WHT/YEL
Under all
conditions
Check for voltage to ground:
There should be battery voltage.
• Blown No. 13 (7.5A) fuse in the
passenger's under-dash fuse/
relay box
• An open in the wire
A2 GRN/WHT
Ignition switch
ON (II)
Check for voltage to ground:
There should be battery voltage.
• Blown No. 15 (20A) fuse in the
passenger's under-dash fuse/
relay box
• An open in the wire
A12 BLK
Under all
conditions
Check for continuity to ground:
There should be continuity.
• Poor ground (G401, G551)
• An open in the wire
A19
BLK
Under all
conditions
Check for continuity to ground:
There should be continuity.
• Poor ground (G401, G551)
• An open in the wire
B1
BLK
Under all
conditions
Check for continuity to ground:
There should be continuity.
• Poor ground (G401, G551)
• An open in the wire
A11
RED/BLU Connect the A10
terminal to the A
12 terminal, and
the A11 terminal
to the A1
terminal.
Check the driver's window
motor operation:
The window should go up.
NOTE: If the window is up, jump
A11 to A12, and A10to A1;the
window should go down.
• Blown No. 13 (7.5A) fuse in the
passenger's under-dash fuse/
relay box
• Faulty driver's window motor
• An open in the wire
A10 RED/YEL
Connect the A10
terminal to the A
12 terminal, and
the A11 terminal
to the A1
terminal.
Check the driver's window
motor operation:
The window should go up.
NOTE: If the window is up, jump
A11 to A12, and A10to A1;the
window should go down.
• Blown No. 13 (7.5A) fuse in the
passenger's under-dash fuse/
relay box
• Faulty driver's window motor
• An open in the wire
A20 WHT/RED
Operating any
passenger's
switch with
ignition switch
ON (II)
Check for voltage to ground:
There should be battery voltage.
• Faulty passenger's switch
• An open in the wire
13. Reconnect the door multiplex control unit and perform the following input test.
• 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 14.
Cavity Wire
Test condition
Test: Desired result Possible cause if result is not obtained
A4 RED
While operating
the driver's
window switch
with the ignition
switch ON (II)
Check for the voltage on the A4
and A12 terminals:
Approx. 6 V should be indicated
as the driver's window motor
runs.
• Faulty pulser
• Faulty driver's window motor
• An open in the wire
• A short to ground in the wire
B2
WHT/RED
Operating any
passenger's
switch with
master main
switch OFF, and
the ignition
switch ON (II)
Check for voltage to ground:
There should be battery voltage.
• Poor ground (G401, G551)
• Faulty passenger's switch
• An open in the wire
14. If all the input tests prove OK, one of the control units must be faulty. Substitute a known-good control unit for the
one that is most likely at fault, then check the system. If the system works properly, the original control unit is
faulty; replace it. If there is still a malfunction, substitute a known-good control unit for the next most likely unit to
be at fault, and recheck. If the system works properly, the original unit is faulty; replace it.
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