Honda Acura NSX 1991 Service Manual page 1248

Power Windows
-Control Unit Input Test
NOTE: The control unit only controls the driver's door
window.
Remove the driver's door trim panel and disconnect the
4-P and 6-P connectors from the control unit.
Make sure the following input tests at the harness pins.
NOTE:
tor connected with the door wire harness.
6-P connectors, and the control unit, then replace
the control unit if all input tests prove OK.
No.
Wire Test condition
Under all conditions.
1 BLK'
Ignition switch ON.
2 W H T N E L
Ignition switch ON and
3 BLKNEL
driver's switch UP.
Ignition switch ON and
4
driver's switch DOWN.
Ignition switch ON and
5
(AUTO).
Connect the WHTNEL ter-
6 B L U
minal to the RED/BLU ter-
and
minal, and the BLK terminal
to the REDNEL terminal.
23-2 64
POWER WINDOW
B L U
Test: desired result
Check for continuity to ground:
should be continuity.
Check for voltage to ground:
should be battery voltage.
Check for voltage to ground:
should be battery voltage as the
switch is turned.
Check for resistance between the
BLU and BLK terminals:
should indicate between 20-50
ohms as the motor runs.
CONTROL UNIT
View from wire side
Possible cause (if result is not obtained)
Poor ground (G401, 402).
l
An open in the wire.
l
Blown No. 50 (2OA) fuse.
l
Faulty power window relay.
l
Faulty key-off timer system.
l
Poor ground (G201).
l
An open in the wire.
l
Faulty driver's switch.
l
An open in the wire.
l
Faulty pulser.
l
Faulty driver's motor.
l
An open in the wire.
l