Honda Acura NSX 1991, Service Manual

Page: 1199 / 1420

-Cancel Unit Input Test
Remove the steering column covers.
Disconnect the 10-P connector from the cancel unit.
Make the following input tests at the 1 O-P connector ter-
minals.
If all tests prove OK, but the turn signal lights fails to
IO-P CONNE
TURN SIGNAL
work, replace the cancel unit.
CANCEL UNIT
I
I
View
from
w i r e
side
No. Terminal Test condition
Test: desired result Possible cause (if result is not obtained)
1
C l 0 Under all conditions. Check for continuity to
l
Poor ground
ground: should be continuity.
l
An open in the wire.
2
C l Ignition switch ON.
Check for voltage to ground:
l
Blown No. 5 fuse.
should be battery voltage.
l
An open in the wire.
c 5
Lighting switch Check for voltage to ground:
l
Faulty lighting switch or taillight
3
should be battery voltage. relay.
l
An open in the wire.
c 2
Turn signal switch Check for continuity between
l
Faulty turn signal switch.
the C2 and C6 terminals:
l
An open in the wire.
4
C6
should’ be continuity.
c 2 Turn signal switch
Check for continuity between
l
Faulty turn signal switch.
the C2 and terminals:
l
An open in the wire.
5 should be continuity.
c 3
Under all conditions. Check for continuity between
l
Faulty turn signal switch solenoid.
the C3 and C4 terminals:
l
An open in the wire.
6
c 4
should be continuity.
Connect the Cl terminal R. turn signal lights should
l
Blown bulb.
c 7
to the C7 terminal then come on as the battery con-
* Faulty turn signal/hazard relay.
ignition switch ON.
l
Poor ground G401, G403,
l
An open in the wire.
Connect the Cl terminal
L. turn signal lights should
l
Blown bulb.
to the C8 terminal then come on as the battery con-
* Faulty turn signal/hazard relay.
ignition switch ON.
l
Poor ground G402,
l
An open in the wire.