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Page Title:
PARKING BRAKE INDICATOR LIGHT DOES NOT OPERATE - continued |
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 TM 10-3930-673-20-1
20. PARKING BRAKE INDICATOR LIGHT DOES NOT OPERATE (CONT).
6
KNOWN INFO
TEST OPTIONS
Parking brake ON.
Continuity test.
Is continuity present between
Other gages work.
STE/ICE-R #91.
wire 2 at parking brake switch
12 vdc present at socket.
REASON FOR QUESTION
and known good ground?
Bulb OK.
If continuity is not present, wire is
Parking brake switch OK.
faulty.
Wire 23 OK.
POSSIBLE PROBLEMS
Wire 2 faulty.
Replace or
NO
repair wire 2
(Para 8-48).
YES
Repeat Step 3 through
Step 6 of this fault.
7
KNOWN INFO
TEST OPTIONS
Parking brake ON.
Continuity test.
Are 1500 ohms present
Other gages work.
STE/ICE-R #91.
across resistor?
12 vdc not measured at socket.
REASON FOR QUESTION
POSSIBLE PROBLEMS
If 1500 ohms are not measured,
Resistor faulty.
resistor is faulty.
Wire 10 faulty.
Replace resistor
NO
(Para 8-9).
YES
Repair or replace
wire 10 (Para 8-48).
2-376
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