Kohler Command PRO EFI ECV880 [51/104] Governor system

Governor System

5119 690 01 Rev. D KohlerEngines.com

Test 2 Probe Location

A Probe Location for Voltage Test 2.

Test 2: Identify probe location in connector. Using a

12 volt meter test for voltage. Turn key switch to ON

position. Voltage should be within +/- 1 volt of battery

voltage. If voltage is within +/- 1 volt of battery voltage,

harness is OK, replace GCU. If not within +/- 1 volt of

battery voltage, check connections and replace wiring

harness if necessary.

Ohms Tests

1. Remove GCU from bracket and unplug wiring

harness.

These two tests are for measuring resistance of DLA

circuit that sends a signal to GCU. If either test fails,

DLA is no good and should be replaced. If both tests are

good, DLA is neither shorted or open, it is good. Another

component, connection, or input is most likely at fault.

Test 1 Probe Location

A Probe Locations for OHMs Test 1.

Test 1: Identify probe locations in connector. Using a

digital multi-meter set to lowest scale (0-200 ohms),

place probes onto harness making sure of a good

connection. Resistance should be between 47.7 and

58.3 ohms.

If test 1 checks OK, locate wire ends in connector and

check using test 2.

Test 2 Probe Location

A Probe Locations for OHMs Test 2.

Test 2: Identify probe locations in connector. Using a

digital multi-meter set to lowest scale (0-200 ohms),

place probes onto harness making sure of a good

connection. Resistance should be between 47.7 and

58.3 ohms.

If either test 1 or 2 fail resistance test, fault could also

be caused by a break/cut in wiring harness. Inspect and

test for a potential harness issue prior to replacing DLA

assembly.

Speed Control Input

A Red Wire with Yellow Tracer.

This connection is a single wire red with yellow tracer.