TM 9-2320-280-20-1
KNOWN INFO
POSSIBLE PROBLEMS
DIAGNOSTIC FLOWCHART
TEST OPTIONS
REASON FOR QUESTION
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
NO
YES
NO
YES
ELECTRICAL
2-80 Change 1
IS THERE AN OPEN CIRCUIT FROM
PIN B TO PIN R AND FROM PIN
B TO PIN S ON THE ROTARY
SWITCH (WITH THE SWITCH IN
THE "STOP" POSITION)?
IS THERE ABOUT 0 VOLTS AT
PINS A,B,D,G AND H OF THE
PCB/DISTRIBUTION BOX
BODY CONNECTOR?
REPAIR OR REPLACE THE BODY
CONNECTOR HARNESS.
GO TO A2, PAGE 2-78,
TO CONTINUE TESTING.
B1
B2
B3
B
FROM
A1, Page 2-78
REPLACE
ROTARY
SWITCH
REPLACE
PCB/DISTRIBUTIION
BOX
SHORT ON BODY
CONNECTOR SIDE OF
PCB/DISTRIBUTION BOX
ROTARY SWITCH
PCB/DISTRIBUTION BOX
BODY CONNECTOR
BODY CONNECTOR
CABLE HARNESS
1. STE/ICE-R TEST 91 (Page 2-752)
2. MULTIMETER
Checking the rotary switch
first makes it easier to check
the other possible problems.
ROTARY SWITCH OK
PCB/DISTRIBUTION
BOX BODY
CONNECTOR
BODY CONNECTOR
CABLE HARNESS
1. STE/ICE-R TEST 89 (Page 2-750)
2. MULTIMETER
If there is voltage at any of
these pins then the
PCB/distribution box must
have a short in it.
