J&J Amusements Bumper Boat 2014 Service Manual page 110

3-22
TESTING THE RELAY
Negative input
503-304-8899
Specifications subject to change without notice - Check our website for valuable information including videos, workshop and operations manuals. www.jjamusements.com
Symptom: The relay clicks, but the motor does not run or
Most common causes: A faulty relay, battery or damaged
The voltage should match the battery voltage (same as the
Negative output
If the voltage is good, measure the voltage at the negative
output post (black 10-gauge wire), with the motor switch in
the "ON" position. The voltage should match the battery volt-
age (same as the voltmeter reading on the back of the boat).
Symptom: The relay does not click and the motor does not
Most common causes: A faulty relay or solid-state switch.
wire). The voltage should match the battery voltage (same
the voltage at the relay activation circuit (white, 18-gauge
The voltage should match the battery voltage (same as the
Negative post
If the activation circuit is verified and the power side (18-
Measure the voltage at the negative input post (black
voltmeter reading on the back of the boat).
The relay controls the ground side of the motor circuit.
Check the power to the relay input post (black 10-gauge
as the voltmeter reading on the back of the boat). Check
voltmeter reading on the back of the boat).
gauge white wire (+) act. circuit ) is verified, then jumper
the yellow wire side directly ( (-) act. circuit on relay), to
the main motor ground post. The relay should function.
A quick ohm meter check across the two small posts
should verify the activation windings - values should be
turns slowly.
wire.
10-gauge wire).
NOTE:
run.
wire (+) act. circuit).
67-71 ohms.