Honda Acura NSX 1991 Service Manual page 1199

-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
work, replace the cancel unit.
IO-P CONNE
TURN SIGNAL
No. Terminal Test
C l 0 Under all conditions.
1
C l Ignition switch ON.
2
Lighting switch (0)
c 5
3
Turn signal switch (R.1
c 2
4 _
C6
c 2 Turn signal switch (L.1
5
Under all conditions.
c 3
6
c 4
Connect the Cl terminal
to the C7 terminal then
c 7
ignition switch ON.
Connect the Cl terminal
to the C8 terminal then
ignition switch ON.
Test: desired
condition
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.
Check for continuity between
the C2 and C6 terminals:
should' be continuity.
Check for continuity between
the C2 and C9 terminals:
should be continuity.
Check for continuity between
the C3 and C4 terminals:
should be continuity.
R. turn signal lights should
come on as the battery con-
L. turn signal lights should
come on as the battery con-
CANCEL UNIT
result Possible cause (if result is not obtained)
Poor ground (G401, G402)
l
An open in the wire.
l
Blown No. 5 (IOA) fuse.
l
An open in the wire.
l
Faulty lighting switch or taillight
l
relay.
An open in the wire.
l
Faulty turn signal switch.
l
An open in the wire.
l
Faulty turn signal switch.
l
An open in the wire.
l
Faulty turn signal switch solenoid.
l
An open in the wire.
l
Blown bulb.
l
* Faulty turn signal/hazard relay.
Poor ground (G301, G401, G403,
l
An open in the wire.
l
Blown bulb.
l
* Faulty turn signal/hazard relay.
Poor ground (G301, G401, G402,
l
An open in the wire.
l
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from
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