Kohler Command PRO ECH630 Service Manual page 92

Section 7
Electrical System and Components
Solenoid Test Procedure
Solenoid Shift Style Starters
Disconnect all leads from the solenoid including
the positive brush lead att ached to the lower stud
terminal. Remove the mounting hardware and
separate the solenoid from the starter for testing.
Test 1. Solenoid Pull-In Coil/Plunger Actuation.
Use a 12 volt power supply and two test leads.
Connect one lead to the fl at spade START terminal on
the solenoid. Momentarily* connect the other lead to
the lower large post terminal. See Figure 7-37.
When the connection is made the solenoid should
energize (audible click), and the plunger retract.
Repeat the test several times. If the solenoid fails to
activate, it should be replaced.
*NOTE: DO NOT leave the 12 volt test leads
connected to the solenoid for any time over
what is necessary for performing each of
the individual tests. Internal damage to the
solenoid may otherwise occur.
Figure 7-37. Testing Pull-In Coil/Plunger Actuation.
Test 2. Solenoid Pull-In Coil/Contact Continuity.
Use an ohmmeter set to the audible or Rx2K scale, and
connect the two ohmmeter leads to the two large post
terminals. Perform the preceding test (1) and check
for continuity. See Figure 7-38. The ohmmeter should
indicate continuity, if no continuity is indicated the
solenoid should be replaced. Repeat test several times
to confi rm condition.
7.16
Figure 7-38. Testing Pull-In Coil/Solenoid Contact
Continuity.
Test 3. Solenoid Hold-In Coil Function Test.
Connect one 12 volt test lead to the fl at spade START
terminal on the solenoid, and the other lead to the
body or mounting surface of the solenoid. Then,
manually push the plunger in and check if the
Hold-In coil holds the plunger retracted. See Figure
7-39.
Do not allow the test leads to remain connected to the
solenoid for a prolonged period of time. If the plunger
fails to stay retracted, the solenoid should be replaced.
12 volt Test Leads
Momentary
Connection Only
Figure 7-39. Testing Hold-In Coil/Function Test.
12 volt Test Leads
Momentary
Connection Only
Manually Push
Plunger "In"
12 volt Test Leads
Connect Only Long
Enough to Test
VOM Leads