Starter System; Troubleshooting - Suzuki UY125 Service Manual

STARTER SYSTEM

Ignition switch
Fuse
Battery

TROUBLESHOOTING

Make sure that the fuse is not blown and the battery is fully-charged before diagnosing.
Starter motor will not run.
Step 1
1) Turn the ignition switch to the "ON" position.
2) Grasp the front or rear brake lever. Listen for a click from the starter relay when the starter button is
pushed.
Is a click sound heard?
YES Go to Step 2.
NO Go to Step 3.
Step 2
1) Check if the starter motor runs when its terminal is connected to the battery + terminal. (Do not use thin
"wire" because a large amount of current flows.)
Does the starter motor run?
• Faulty starter relay
YES • Loose or disconnected starter motor lead wire
• Loose or disconnected between starter relay and battery + terminal
NO Faulty starter motor
Step 3
1) Measure the starter relay voltage at the starter relay connectors (between Y/G + and B/W -) when the
starter button is pushed.
Is a voltage OK?
YES Go to Step 4.
• Faulty starter button
• Faulty ignition switch
NO • Faulty brake light switches (front and rear brakes)
• Poor contact of connector
• Open circuit in wire harness
Front brake light switch
O
Rear brake
CDI unit
light switch
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ELECTRICAL SYSTEM
Starter relay
R
Y/G
Starter button
6-13
Starter motor
M
R