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System Not Controlling/Surging in both RPM & Speed Mode
You can quickly perform a "Control Test" to confirm whether PerfectPass has proper control of
the ECM. This test is on Page 3 and can be done on a "fake lake" or in the water.
The PerfectPass "Drive by Wire" (DBW) system for new electronic throttle engines
results in a simplified and enhanced version of PerfectPass. From the drivers seat,
PerfectPass operation is virtually identical to the present mechanical systems.
PerfectPass is now comprised of just four main parts:
1. DBW Master Control Module
2. DBW Plug & Play Engine Wiring Harness
3. Plug & Play Display Harness
4. In-Dash Display
5. ALDL Plug
On 2007 MCX and RPT, an "ALDL" ground plug is
required. On the 2006 6.0L and 8.lL, a re-flash of the
ECM is required.
How it Operates:
The ECM of an electronic throttle engine allows an external device such as PerfectPass
to control the engine rpm using the throttle servo motor when all control signals are valid
and manual throttle lever position exceeds the rpm level request of PerfectPass.
Just three individual wires in the PerfectPass DBW wiring harness connect the speed
control to the engine ECM.
1. The Request Line from PerfectPass requests the ECM to allow PerfectPass to take
control.
2. The Status Line from the ECM indicates PerfectPass now has control of the engine.
The Status Line is the signal that confirms engagement (beeper) and system control
and must be operational for system to engage & control properly.
3. The VGOV Line establishes the engine RPM level as set by PerfectPass.
Problems with PerfectPass should be rare given the few components that now make up
the system. Most troubleshooting will simply involve voltage/continuity testing on the
PerfectPass engine harness.
PerfectPass Control Systems
MasterCraft 2007
Troubleshooting
(Electronic Throttle Engines)
(902) 468-2150
Engine
Harness
Harness
Display
Page 1
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Summary of Contents for PERFECTPASS MasterCraft 2007
- Page 1 System Not Controlling/Surging in both RPM & Speed Mode You can quickly perform a “Control Test” to confirm whether PerfectPass has proper control of the ECM. This test is on Page 3 and can be done on a “fake lake” or in the water.
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Page 2: Wiring Identification
Problems with PerfectPass Controlling / Not Controlling Open circuit (bad connection/broken wire) symptoms of a DBW System Problem #1 RQST Line Open – PerfectPass never takes control in any mode, the engine is controlled only by the manual throttle handle. - Page 3 Problem #5 System Surges During Operation and During Control Test as Described Below Reason – Poor ground. MasterCraft has had ground issues on the ground wire for PerfectPass. Check all wires at ground bar and tighten as required. TESTING (CONTROL TEST) To enter the Test Mode, press the Menu &...
- Page 4 Voltage Test (Control Test Mode) These measurements are taken in Control Test Mode with system ON and R must be on screen. This test will confirm whether PerfectPass and the ECM are properly connected. Locate the 14-pin engine connector on the PerfectPass Module or ideally the 9- pin MAT N LOK connector on PerfectPass harness.
- Page 5 (KDW, NN and Control Settings CS/CR) If it does not engage, perform Open Circuit Tests. Make sure there is an rpm reading on screen or PerfectPass will never operate properly. Problem – No speed reading on PerfectPass Display Check –...
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Page 6: Software Adjustments
System Reset – To reset the entire system back to original factory values, press & hold ON/OFF & MENU Keys together as you turn key on to power PerfectPass. Continue holding for a few seconds until [ System Reset ^ = Yes ] appears. Then simply answer questions as they appear. - Page 7 [Wakeboard Only ^ = YES]. Answer YES for WakeboardPro, and NO for DigitalPro Engine Selection – On initial start up or during a system reset, PerfectPass will ask if you have a standard 5.7 litre engine. This will appear as [ 5.7 / MPI ^ = Yes ] This means press UP for 5.7 and DOWN for Big Block 6L or 8.1L.