Solenoid Testing: Grounded Base Remote Solenoids
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Step 1: Check the voltage on the battery side of the solenoid
as shown on the left. The reading should be the same as the
battery reading (12.6V = Full Charged Battery).
Step 2: With the voltmeter still connected, turn the key to the
start position and read the voltage. The voltage should not drop
below 10.0 volts on this terminal. If the voltage drops below 10.0
volts, The battery cable should be cleaned or replaced. If the
reading is 10.0 volts or more move on to step 3.
Step 3: Keep the negative voltmeter lead on the metal base
of the solenoid and move the positive voltmeter lead to the
terminal marked “S” on the solenoid. Turn the key to the start
position and read the voltage. The Voltage could read a little
lower than the previous reading but should never be below
10.0 volts. If the voltage is lower than 10.0 volts, You must
troubleshoot the start circuit (ignition switch, voltage supply
to the ignition switch, neutral safety switch).
Step 4: Move the positive voltmeter lead to the battery
terminal on the solenoid and the negative voltmeter lead to
the terminal that the starter cable is attached. Turn the key
to the start position and read the voltage. The voltage should
read no more than .3 volts. If the reading is more than .3 volts
the contacts have excessive resistance and the solenoid should
Step 5: Some solenoids use a relay terminal on the solenoid to
power fuel pumps or supply full battery voltage to ignition coils
when the starter is activated. This terminal is usually marked “I”
or “R”. Connect the voltmeter a shown. Turn the key to the start
position. You should read no more than 0.3 volts. If you have
more than 0.3 volts the solenoid should be replaced.
SIMPLE SOLENOID TESTING: GROUNDED BASE REMOTE SOLENOIDS
NOTE: Before Performing These Tests You Must Fully Charge and Load Test The Battery to Verify It Is Good.
To Ignition Coil +
or Fuel Pump Relay
To Battery +
To Ignition Switch
To Battery +