TM 9--2350--292--20--1
0174 00--1
LOW BRAKE PRESSURE WARNING LIGHT DOES NOT LIGHT WHEN BRAKE
PRESSURE IS BELOW 450 PSI (OLD CONFIGURATION) OR 525 PSI (NEW
CONFIGURATION WITH BRAKE MODULATION)
0174 00
THIS WORK PACKAGE COVERS:
Low Brake Pressure Warning Light Does Not Light When Brake Pressure Is Below 450 PSI (Old Configuration)
Or 525 PSI (New Configuration With Brake Modulation)
INITIAL SETUP:
Tools and Special Tools
General mechanic’s tool kit (item 1, WP 0717 00)
Multimeter (item 84, WP 0717 00)
Equipment Conditions
Vehicle MASTER switch OFF (TM 9--2350--292--10)
LED has been replaced
Subfloor plates 13 and 16 removed (WP 0454 00)
Personnel Required
Two
Is 24 V dc present?
1. Disconnect lead 48 from low brake pressure
switch.
2. Turn MASTER switch ON
(TM 9--2350--292--10).
3. Place multimeter red lead in lead 48 connector
socket and black lead to ground. Check for
voltage.
4. Turn MASTER switch OFF
(TM 9--2350--292--10).
no
yes
A
B
CONTINUED ON NEXT PAGE
1. Reconnect lead 48 to low brake pressure
switch.
2. Disconnect harness 4W155 P1 from brake
pressure switch.
3. Turn MASTER switch ON
(TM 9--2350--292--10).
4. Place multimeter red lead in harness 4W155
P1 socket B and black lead to ground. Check
for voltage.
5. Turn MASTER switch OFF
(TM 9--2350--292--10).
Is 24 V dc present?
WARNING
Remove rings, bracelets, wristwatches,
and neck chains before working on any
vehicle. Jewelry can catch on equip-
ment and cause injury, or may short
across an electrical circuit and cause
severe burns or electrical shock.
Go to Step C.
FORWARD
