TB 9-2320-335-13&P
ELECTRONIC SPEEDOMETER SYSTEM
DIAGNOSTIC FLOWCHART
START
1
TEST OPTIONS
KNOWN INFO
SPEEDOMETER
IS BATTERY VOLTAGE DISPLAYED ON
INOPERATIVE
MULTIMETER?
OTHER GAUGES
OPERATE NORMALLY
POSSIBLE PROBLEMS
REASON FOR QUESTION
OPEN
No voltage at terminal indicates
SHORT
REPLACE
an open in the speedometer
SPEEDOMETER
SPEEDOMETER
wiring harness.
SENDER GENERATOR
NO
WIRING HARNESS
SPEEDOMETER
(Para. 4-18.1)
DRIVEN GEAR
YES
2
TEST OPTIONS
KNOWN INFO
SPEEDOMETER
IS BATTERY VOLTAGE DISPLAYED
INOPERATIVE
ON MULTIMETER?
OTHER GAUGES
OPERATE NORMALLY
SPEEDOMETER
HAS POWER
REASON FOR QUESTION
POSSIBLE PROBLEMS
No voltage displayed on
REPLACE
multimeter indicates an open
OPEN
SPEEDOMETER
ground in the speedometer
SHORT
NO
WIRING HARNESS
wiring harness.
SPEEDOMETER
(Para. 4-18.1)
SENDER GENERATOR
YES
SPEEDOMETER
DRIVEN GEAR
GO TO 3,
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