Etb Learning Procedure - Polaris msx 110 Service Manual

FUEL INJECTION / IGNITION / EXHAUST SYSTEMS
General Engine Management Trouble Codes
P - - Code
P0171 Fuel System: Maximum Adaption Limit Reached
P0172 Fuel System: Minimum Adaption Level Reached
P0234 Turbocharger Overboost Condition
P0560 Battery Voltage Plausibility Error
P0562 Battery Voltage: Low
P0563 Battery Voltage: High
P0601 Main Microcontroller Reset
P0604 Ram Memory Failure
P0605 ROM Memory Failure
P0606 ECU: EEPROM Memory or Checksum Error
Electronic Throttle Body (ETB) / Pedal Position Unit (PPU)
A unique function of the Bosch ME-- Motronic 7.4.4 Engine Management System is its use of a "Fly--By--Wire"
or Electronic Throttle Control (ETC) system. In this system, the throttle flipper is not directly connected to the
the throttle plate, but rather a pedal position unit or PPU.
Four components make up the ETC system:
Pedal Position Unit (PPU)
Engine Control Unit (ECU
Electronic Throttle Body (ETB)
PPU Interface Box (IFB)
The PPU and ETB use two position sensors each to relay and verify the exact position of each component to the
ECU. The ECU continuously monitors all four position sensors. In the event that any one sensor fails, the ECU
will go into the LIMP--HOME mode, illuminate the CHECK ENGINE MIL light, and store the applicable trouble
code.

ETB Learning Procedure

The ECU must perform the ECU / ETB learning procedure when ever the ECU or ETB is replaced with a new
part. During the procedure, the ECU sweeps the throttle plate from full open to full close and "learns" the unique
characteristics of the ETB.
1. Engine must be OFF, and lanyard removed from stop switch.
2. The PPU must be at absolute 0. (Increase the throttle flipper cable freeplay to ensure PPU is set to
absolute zero and that cable is not kinked.)
3. Verify the battery voltage is at or above 10.1 Vdc, and that the engine temp. is between 42 and 176 F.
The outside ambient temp. must be at least 42 F.
4. Install the new ETB or ECU.
5. Insert the lanyard into the stop switch for AT LEAST 30 seconds.
6. Remove lanyard and wait for AT LEAST 2 minutes.
7. Insert lanyard and re--start engine. Re--set the throttle flipper cable freeplay to what it was prior to
performing process.
2004 Four Stroke PWC Service Manual
Description Summary
Indicates the air/fuel mixture is too lean and the ECU has
reached the maximum amount of fuel it can possibly deliver.
Can be caused by a faulty O2 sensor, air leak, faulty injector or
any other failure that would cause a lean- -running condition.
Occurs when the engine is running at part- -load and the O2 sen-
sor indicates a constant RICH fuel condition for an extended
period of time. Can be caused by a faulty O2 sensor, plugged air
intake, leaky injector, or other mechanical failure.
Boost pressure has exceeded 33 psi (2.3 BAR) of more than 400
milliseconds.
Battery voltage drops below 10.5 Vdc during operation.
Battery voltage drops below 10.5 Vdc during operation.
Battery voltage exceeds regulated limit.
Replace ECU Replace ECU
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