Honda SH125 Manual page 326

ELECTRIC STARTER
TROUBLESHOOTING
Starter motor does not turn
1. Fuse Inspection
Check for blo wn main fuse
(30
A) or sub-fuse (15
A).
I s
the fuse blow?
YES
-
Replace the fuse.
NO
-
GO
TO STEP 2.
2. Battery Inspection
Check the battery is fully charged and i n good condition.
I s the battery in good condition7
YES
-
GO
TO STEP 3.
NO
3. Starter Relay Switch Operation Inspection
Turn the ignition switch to ON.
Squeeze the brake lever fully and push the starter switch.
You should hear the starter relay switch "CLICK" when the starter switch is pushed.
I s
the "CLICK" hear7
-
Charge or replace the battery (page 17-6).
YES
NO
-
GO TO STEP 4.
-
GO TO STEP 5.
4. Starter Motor Inspection
Turn the ignition switch to OFF.
Apply battery voltage t o the starter motor directly and check the operation.
Dose the starter motor turn7
YES
-
Loose or poorly connected starter motor cable.
NO
-
Inspect the starter motor (page 19-6).
5. Starter Relay Coil Power Input Line Inspection
Check the relay coil power input line of the starter relay switch (page 19-12).
Is the power input line normal7
Faulty starter relay switch.
YES
-
GO TO STEP 6.
NO
-
Faulty ignition switch (page 20-12).
Faulty main relay (page 20-15).
Faulty brake light switch (page 20-14).
Faulty starter switch (page 20-14).
Loose or poor contact o f the related connector terminal.
Open circuit in the wire harness between the ignition switch and starter relay switch.
6. Starter Relay Coil Ground Line Inspection
Check the ground line of the starter relay switch (page 19-12).
I s the ground line normal7
YES
-
Faulty starter relay.
NO
-
Loose or poor contact of the ground terminal
Open circuit in the wire harness between the starter relay switch and ground terminal.