Marine Power 5.3 GEN V DI Owner's Manual page 52

13.
Installation Instructions
Potentiometer Operation
The throttle lever rotates assproximately 80°. Maximum clockwise
(CW) rotation is idle. Maximum counter-clockwise (CCW) rotation
is wide open throttle (WOT). The Potentiometer has contacting
wiper blades which produce 2 output voltages (PPS1 and PPS2).
Both PPS1 and PPS2 output voltages should be adjusted to .78
volts at idle and 4.1 volts at WOT. If the output voltages are above
or below these settings an "Out of Range" DTC will set and the
throttle plate will not open or close. Likewise, if the dual output
voltages differ by more than 8%, a "Correlation" DTC will set and
the throttle plate will not open or close. The set screws are used to
accurately adjust the output voltages. They are not to be used as
stops for the throttle cable. Such use will cause a Correlation DTC.
DTC's will automatically reset with an ignition switch recycle. If the
set screws are impeding lever operation they must be backed out.
If a Correlation DTC continues to set, the Potentiometer should be
replaced as it is permanently damaged. if the Out of Range DTC
is setting as soon as the ignition is turned on, the likely cause is
mis-adjustment of idel outputs. if the Out of Range DTC occurs at
WOT, the WOT outputs are out of adjustment.
50
C PPS1 RETURN
B PPS1 SIGNAL
A PPS1 REF
PPS1 Voltage is determined by measuring between PPS 1 Signal and PPS 1 Return (A and C). PPS 2
Voltage is measured between PPS 2 Signal and PPS 2 Return (E and F). Connector will have to be back
probed with ignition on.
POS Description
D PPS2 5V REF
E PPS2 SIGNAL
A PPS 1 5VOLT REF
F PPS RETURN
B PPS 1 SIGNAL
C PPS 1 RETURN
D PPS 2 5VOLT REF
E PPS 2 SIGNAL
F PPS 2 RETURN
Wire Color
Gray
Blue
Black
Gray/White
Blue/White
Black/White
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