Honda Acura NSX 1991 Service Manual page 782

Problem code 2: Parking brake signal
NOTE:
Before proceeding to the troubleshooting procedure, be sure to perform a running test and check whether the
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TCS indicator light comes on or not. If the TCS indicator light does not come on, the system is working properly.
If the TCS indicator light comes on, make sure the parking brake lever is released.
When both of the front wheels are running at 10 km/h (6.2 mph) or over and the parking brake is applied for
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more than 30 seconds continuously, the TCS control unit will cause the TCS indicator light to come on.
When the parking brake switch is turned OFF, the input signal to the TCS control unit becomes high. When the
parking switch is turned ON, the input signal to the TCS control unit becomes low. Also, when the wire between
the No.5 (IO A) fuse and the TCS control unit is disconnected or cut, the input signal becomes low.
brake lever
Release the oarkina
(switch the ignition
OFF) and t&t
I
Check the BRAKE system light.
Is the BRAKE system light come
on?
Release the parking brake lever
(switch OFF) and turn the ignition
Measure the voltage between the
No. 17 terminal of the 20-P con-
ignition switch ON.
Is there battery
voltage?
YES
TCS
Check for loose control unit
connector. If necessary, substi-
tute a known-good TCS control
unit and recheck.
No. 5 (IO A)
FUSE
B R A K E FLUID -
LEVEL SWITCH
YES
Check
l for;
brake fluid level switch
l Replace the BRAKE system
bulb.
Repair open in the GRNlRED
l
wire between the gauge as-
and point. @
0 I I 1 2 13 14~15~l6~1~~18
View from terminal side
Repair open in the GRNlRED
NO
between the point Q and TCS
control unit.
BRAKE SYSTEM LIGHT
E C
BRAK S W I T H
I9 2
wire