Genie Z-60/34 Service Manual page 151

November 2003
REV A
Code Problem
TPS1 Lower than
536
TPS2
Throttle Unable to
537
Open
Throttle Unable to
538
Close
Governor Interlock
545
Failure
Max Governor Speed
551
Override
552
Fuel Rev Limit
553
Spark Rev Limit
Part No. 75861
Cause
The throttle position sensor
wiring and/or connections for
either TPS1 or TPS2 open or
shorted OR there is a poor
system ground connection OR
one or both throttle position
sensors are faulty.
Governor actuator is stuck
closed OR wiring and/or
connections open or shorted
OR governor actuator is faulty.
Governor actuator is stuck
open OR wiring and/or
connections open or shorted
OR governor actuator is faulty.
Engine harness wiring and/or
connections open or shorted
OR there is a poor system
ground connection OR ECM is
faulty.
ECM needs to be re-
programmed OR throttle is
sticking open OR there are air
leaks between the throttle body
and cylinder head.
ECM needs to be re-
programmed OR throttle is
sticking open OR there are air
leaks between the throttle body
and cylinder head.
ECM needs to be re-
programmed OR throttle is
sticking open OR there are air
leaks between the throttle body
and cylinder head.
Genie Z-60/34
Section 5 • Fault Codes
FAULT CODES
Solution
Be sure engine harness wiring
and connections are in place
and secure OR repair wiring
and/or connections to one or
both TPS sensors OR replace
one or both TPS sensors.
Repair wiring and/or
connections to governor
actuator OR replace the
governor actuator.
Repair wiring and/or
connections to governor
actuator OR replace the
governor actuator.
Repair wiring and/or
connections in engine harness
OR replace the ECM.
Re-program ECM OR repair
binding throttle operation OR
repair any air leaks between
the throttle body and cylinder
head.
Re-program ECM OR repair
binding throttle operation OR
repair any air leaks between
the throttle body and cylinder
head.
Re-program ECM OR repair
binding throttle operation OR
repair any air leaks between
the throttle body and cylinder
head.
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