Kohler COMMAND CH18-745 User Manual download pdf (Page 68)

5B.9

Section 5B

EFI Fuel System

b. If light stays on or blinking ceases prematurely,

the procedure was unsuccessful and must be

repeated. Possible causes for unsuccessful

learning may be: 1) Movement occurred in

either the TPS or throttle shaft during

procedure, 2) Crankshaft movement/rotation

was detected by the speed sensor during

procedure, 3) Throttle plate position was out of

learnable range (recheck the 1500 RPM idle

speed adjustment), or 4) Problem with ECU or

TPS.

9. When the initialization procedure has been

successfully completed, turn off the key switch,

remove the jumper wire or connector, and remove

the rubber band from the throttle lever.

10. Disconnect negative (-) battery cable temporarily

to clear all learned adjustments.

11. Reconnect the battery cable and all external

loads. Readjust the idle speed to the equipment

manufacturer’s specified setting and recheck the

high-speed, no-load RPM setting. Observe the

overall performance.

TPS Initialization Procedure

For “32 Pin” (MSE 1.1) Plastic-Cased ECU Only

(“Auto-Learn” Initialization)

1. Check that the basic engine, all sensors, fuel, fuel

pressure, and battery are good and functionally

within specifications.

Important!

2. Remove/disconnect ALL external loads from the

engine (belts, pumps, electric PTO clutch,

alternator, rectifier-regulator, etc.).

3. Locate the service connector plug in the wiring

harness. To initiate the TPS auto-learn function,

connect a jumper wire from the TPS initialization

pin #24 (violet wire) to the battery voltage pin

(red wire), or use jumper plug (SPX Part No.

KO3217-9). If using the PC-based diagnostic tool

and software (Kohler Part No. 25 761 23-S), go to

“Special Tests” and follow the prompts to

complete.

4. Start the engine and immediately observe the

Malfunction Indicator Light (MIL). The light should

start blinking 4 consecutive times every 2

seconds.

“24 Pin” (MSE 1.0) Plastic-Cased ECU:

Connect a jumper wire from the TPS initialization

pin #24 (violet wire) to the battery voltage pin (red

wire), or use jumper plug (SPX Part No.

KO3217-9, with blue jumper wire). See Figure

5B-9.

Figure 5B-8. Service Connector Plug, Metal-Cased

ECU Harness.

Figure 5B-9. Service Connector Plug, Plastic-

Cased ECU Harness.

8. Hold throttle against idle speed stop screw, turn

the ignition switch to “on” position (do not start

engine), and observe the Malfunction Indicator

Light (MIL).

a. The light should blink on/off quickly for

approximately 3 seconds and then go off and

stay off, indicating the initialization procedure

has been successful.

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Kohler COMMAND CH18-745 User Manual Page 68

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