TM 9-2320-387-24-l
INSTRUMENTS CIRCUIT
DIAGNOSTIC FLOWCHART
-
WINDSHIELD WIPERS OK
POSSIBLE PROBLEMS
;T OPTIONS
DISCONNECT WIRE 28A AT THE
FUEL SENDING UNIT HARNESS.
IS THERE CONTINUITY BETWEEN
THE ENDS OF WIRE 28A AT THE
FUEL GAUGE AND AT THE FUEL
SENDING UNIT HARNESS?
1. STE/ICE-R TEST 91
(Page 2-508)
2. MULTIMETER
REASON FOR QUESTION
If the wire is OK, the sense line
from the sending unit to the
FUEL GAUGE
OIL PRESSURE GAUGE
TEMPERATUREGAUGE
I
gauge is OK.
I
I
1
it
WINDSHIELD WIPERS OK
1 TEST OPTIONS
IS THERE CONTINUITY BETWEEN
WIRE 58C AT THE FUEL SENDING
UNIT HARNESS AND BODY (OR
ENGINE) GROUND?
1. STE/tCE-R TEST 91
(Page 2-508)
2. MULTIMETER
REASON FOR QUESTION
If the wire is OK, the sending un
ground is OK.
FUEL GAUGE
OIL PRESSURE GAUGE
TEMPERATURE
GAUGE
I
I
KNOWN INFO
I
;T OPTIONS
1. STE/ICE-R TEST 91
(Page 2-508)
2. MULTIMETER
WINDSHIELD WIPERS OK
CHECK RESISTANCE ACROSS
WIRE 28B & WIRE 58J AT THE
FUEL SENDING UNIT HARNESS.
IS THE RESISTANCE LESS THAN
50 OHMS?
REASON FOR QUESTION
If the fuel sending unit is OK,
it could have been bad
connections.
POSSIBLE PROBLEMS
1
FUEL GAUGE
OIL PRESSURE GAUGE
TEMPERATURE
GAUGE
2-352
