nsxb23138a.pdf

Brake Warning System
Parking Brake Switch Test
1. Remove the center console, and disconnect the con-
nector from the switch.
2. Check continuity between the positive terminal and
body ground with the brake lever up and down.
• There should be no continuity with the brake lever
down.
• There should be continuity with the brake lever
up.
DOWN
BRAKE LEVER
POSITIVE TERMINAL
BODY GROUND
NOTE: (Canada)
If the parking brake switch is OK, but the brake
warning system does not work, make the input
test for the daytime running lights control unit
(see page 23-180).
Brake Fluid Level Switch Test
1. Remove the reservoir cap. Check that the float
moves up and down freely; if it doesn’t, replace the
reservoir cap assembly.
RESERVOIR CAP
FLOAT
Has a built-in
magnet
Switch contacts closed
when float drops.
Switch contacts open, at
proper fluid level.
2. Check for continuity between the terminals with the
float up and down.
There should be continuity with the float down and
no continuity with the float up; if continuity is incor-
rect, replace the reservoir cap assembly.
UP POSITION
DOWN POSITION
UP