Honda Acura NSX 1991 Service Manual page 1191

If the brake lights do not go on, check the No. 45
1 .
(20A) fuse in the main relay box, and the brake light
bulbs in the taillight assembly, and the LED in the
high mount brake light.
2. If the fuse and bulbs are OK, disconnect the 4-P con-
nector from the brake light switch.
3. Check for continuity between the B and C terminals.
There should be continuity with the brake pedal
pushed.
If there is no continuity, replace the switch or ad-
l
just pedal height (see section 19).
If there is continuity, but the brake lights do not
l
go on, inspect for:
23-151).
BRAKE
PEDAL
1 . Open the trunk lid and engine cover.
2. Disconnect the 2-P connector from the trunk wire
harness.
View from terminal side
3 . Connect voltmeter positive probe to the GRN/WHT
terminal, negative probe to BLK terminal.
When the brake pedal is pushed, check for voltage
between GRN/WHT and BLK terminals. There should
be voltage.
l If there is battery voltage, go to step 4.
4. Connect battery positive to GRN/WHT terminal,
negative to BLK terminal.
Check go on all the LEDs of the high mount brake
light.
check for an open in the wires in the trunk lid.
If the wires in the trunk lid are OK, replace the
high mount brake light.
5. If some of the high mount brake light LEDs do not
go on, replace the high mount brake light assembly.
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