Electrical Components; Electronic Control Unit (Ecu); Pinout Of Ecu - Kohler command pro ECH749 Service Manual

EFI SYSTEM-ECH

ELECTRICAL COMPONENTS

Electronic Control Unit (ECU)

Pinout of ECU

Black Connector Side
Pin #
1 Ignition Coil #1 Ground
2 Battery Ground
3 Diagnostic Communication Line
4 Speed Sensor input
5 Fuel Injector Output #1 Ground
6 Fuel Injector Output #2 Ground
7 Oxygen Sensor Heater
Intake Air Temperature (IAT) sensor or TMAP
8
sensor input
9 Fuel Pump Ground
Ground for TPS, IAT and MAP sensors or TMAP
10
sensor, O2 and Oil sensors
11 MAP sensor or TMAP sensor input
12 Throttle Position Sensor (TPS) input
13 Speed Sensor Ground
14 Oil Temperature Sensor input
15 Ignition Switch (Switched +12V)
Power for TPS sensor, MAP sensor or TMAP
16
sensor (+5V)
17 Oxygen Sensor (O2) input
18 Battery Power (Permanent +12V)
34
Function
ECU
BLACK CONNECTOR SIDE
Pinout of ECU
Pin #
1 Not Used
2 Not Used
3 Malfunction Indicator Light (MIL) Ground
4 Not Used
5 Not Used
6 Not Used
7 Not Used
8 Not Used
9 Battery Ground
10 Ignition Coil #2 Ground
11 Not Used
12 Not Used
13 Not Used
14 Safety Switch Ground
15 Not Used
16 ECU
17 Fuel Pump Control (+12V)
18 Not Used
GREY CONNECTOR SIDE
KohlerEngines.com
Grey Connector Side
Description
24 690 01 Rev. K