TB-9-2320-335-13-P
TRUCK, UTILITY: EXPANDED CAPACITY, IAP/ARMOR READY
TECHNICAL BULLETIN; OPERATOR AND FIELD MAINTENANCE AND REPAIR PARTS AND SPECIAL TOOLS LIST (RPSTL) INSTRUCTIONS
MAY 2008
TB-9-2320-335-13-P - Page 58 of 680
2-36
TB 9-2320-335-13&P
ELECTRONIC SPEEDOMETER SYSTEM
DIAGNOSTIC FLOWCHART
NO
YES
3
TEST OPTIONS
MULTIMETER
REASON FOR QUESTION
No resistance indicates an open
wiring harness or sender
generator.
High resistance indicates a short.
Less than 5 ohms indicates
continuity.
FROM 2
Page 2-56
DOES SENDER GENERATOR CIRCUIT HAVE
CONTINUITY?
KNOWN INFO
SPEEDOMETER
INOPERATIVE
OTHER GAUGES
OPERATE NORMALLY
SPEEDOMETER
HAS POWER
SPEEDOMETER HAS
GROUND
POSSIBLE PROBLEMS
OPEN
SHORT
SPEEDOMETER
SENDER GENERATOR
SPEEDOMETER
DRIVEN GEAR
REPLACE
SENDER GENERATOR
(Para. 5-17.1)
or REPLACE
SPEEDOMETER WIRING
HARNESS
(Para. 4-18.1).
REPLACE
SPEEDOMETER
(Para. 4-17.1).
NO
YES
4
TEST OPTIONS
VISUAL
REASON FOR QUESTION
Stripped or broken speedometer
driven gear will cause sender
generator to be inoperative.
ARE SPEEDOMETER DRIVE GEARS GOOD?
KNOWN INFO
SPEEDOMETER
INOPERATIVE
OTHER GAUGES
OPERATE NORMALLY
SPEEDOMETER
HAS POWER
SPEEDOMETER HAS
GROUND
NO OPEN CIRCUIT
POSSIBLE PROBLEMS
SPEEDOMETER
SPEEDOMETER
DRIVEN GEAR
REPLACE
SPEEDOMETER
DRIVEN GEAR
(Para. 5-17.2).
END
OF TEST
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