Section 11. TROUBLE SHOOTING / GENERAL INFORMATION
Detailed Trouble Shooting documents and videos can be found on line at www.perfectpass.com .
See Support, “Trouble shooting”.
You can learn a lot from just turning on key and watching system start up. Every time PerfectPass is
powered you will see the back light in Display glow green followed by a beep as the screen becomes
active. When the Master Module sees a solid 12 volts +, the Intel processor starts which puts the
data on screen and the servo motor will perform its “auto tighten” check.
A. NOT CONTROLLING
Servo Motor “Auto tighten” Test
Check: To confirm proper operation of the 4 phase servo motor, perform the following test.
With key OFF, check to see if servo motor can be easily turned and that set screw in knob is
snug. (It should turn freely, if not the motor may be seized) Turn knob in clockwise direction
until snug, and then turn it back counter clockwise one full turn.
Now turn key ON and servo should perform its “auto tighten” function and wind in the cable
(approximately ¾ of a turn). (Every time system is powered, it will do an “auto tighten” which
confirms all electrical phases are OK). Ideally, you should hold knob gently during “auto
tighten” test to put a little extra load on the motor to check the connections.
Remember the servo motor will run very hot, particularly the gold resistor.
If motor does not wind in or just vibrates, then an electrical connection is likely bad. Unplug
both connectors at servomotor and closely inspect the crimps and wiring. Gently pull on each
wire to make sure the wire is securely crimped. Also check the connectors on the gray servo
power cable at both ends (See servo testing in addendum for detailed testing).
If this test is OK, do a “Linkage Test” as described in section B.
B. Linkage Test - With key OFF, push the manual throttle open to ¾ position. Then take the black
knob on servo motor and slowly wind the knob in a counter clockwise direction, then in a
clockwise direction. As you do this, the throttle will slowly open and close with each step of the
motor. In no place should the cable catch or hook as this will cause the system to surge. If the
cable comes into contact with any part, fuel rail, cross over pipe or decorative engine cover,
adjust cable and servo as required. (The cable should have a nice smooth bend and be in good
alignment with the throttle connection. If you feel the cable is too long, contact PerfectPass)
The brass L adapter should freely swivel as the throttle opens & closes.
(If your boat has a plastic decorative engine shroud, you may wish to remove it temporarily and
see if the problem disappears).
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