TOHATSU BFT115A Service Manual page 315

STARTING SYSTEM TROUBLESHOOTING
STARTER MOTOR DOES NOT TURN
1. Standard inspection
Check the following:
– Battery condition
– Burned No.4 (30 A) fuse
Are the above items in good condition?
YES
NO
2. Starter relay operation inspection
Turn the combination switch to the START position.
Check the operation of the starter relay switch.
Does the starter relay switch click?
YES
NO
3. Starter motor inspection
Turn the combination switch OFF.
Remove the starter motor (page 9-5).
Apply battery voltage to the starter motor directly
and check the operation (A large amount of current
flows, so do not use a thin wire).
Does the starter motor turn?
YES
NO
4. Starter magnetic switch inspection
Apply battery voltage to the starter magnetic switch
S terminal and starter motor body.
Check for continuity at the starter motor B terminal
and starter motor M terminal.
Is there continuity by connecting the battery?
YES
NO
– GO TO STEP 2.
– Replace or repair the malfunctioning part (s).
– GO TO STEP 3.
– GO TO STEP 4.
– • Poorly connected starter motor cable
• Faulty starter magnetic switch
– Inspect the starter motor (page 9-15).
– GO TO STEP 5.
– Faulty starter magnetic switch
STARTING SYSTEM
9-3