Honda Acura NSX 1991, Service Manual

Page: 1150 / 1420

Integrated Control Unit
Test
Side
No.
A7 A8 A8 A4 A3 A2 Al
A l 4 A l 3 A l 2 A l l A 1 0 A 9 A 8
View from terminal side
Marker Light Flasher System:
Terminal
Test condition Test: desired
\
View from wire side
result Possible cause (If result is not obtained)
1 A8
Under all conditions. Check for continuity to ground:
l
Poor ground
should be continuity.
l
An open in the wire.
2 A9
Under all conditions. Check for voltage to ground:
l
Blown No. 34 fuse.
should be battery voltage.
l
An open in the wire.
Ignition switch ON. Check for voltage to ground:
l
Blown No. 5 or No. 29 (50
3
A5
should be battery voltage. A) fuse.
l
An open in the wire.
Lighting switch ON.
Check for voltage to ground:
l
Blown No. 38 fuse.
4 A6
should be battery voltage.
l
Faulty lighting switch.
l
An open in the wire.
Ignition switch ON Check for voltage to ground:
l
Blown No. 46 fuse.
5 A l l
and turn signal switch should be battery voltage.
l
Faulty turn signal system.
in left position.
l
An open in the wire.
Ignition switch ON
6
A3 and turn signal switch
in right position.
Connect the A9 Check marker light operation:
7 PNK/BLU nal to the left (or right) front side
(or
marker light should come on.
8 n a l
l
Blown bulb.
l
Poor ground
l
An open in the wire.
Power Window key-off Timer System:
No. Terminal Test condition
Test: desired result Possible cause (if result is not obtained)
1 A8
Under all conditions.
Check for continuity to ground:
l
Poor ground (G401,
should be continuity.
l
An open in the wire.
2
A9
Under all conditions. Check for voltage to ground:
l
Blown No. 34 fuse.
should be battery voltage.
l
An open in the wire.
Ignition switch ON. Check for voltage to ground:
l
Blown No. 5 or No. 29
3 A5 should be battery voltage. fuse.
l
An open in the wire.
4
Left door opened.
5 Right door opened.
Check for continuity to ground:
l
Faulty door switch.
should be continuity.
l
An open in the wire.
NOTE: Before testing, remove
No. 38
fuse.
Connect the A9 Check window operation:
l
Faulty power window relay.
6 A l 4
nal to the Al4
Power windows should operate.
l
Poor ground
terminal.
l
An open in the wire.
23-164