TOHATSU BFT 250A, Service Manual

Page: 289 / 639

9-3
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STARTING SYSTEM
STARTING SYSTEM TROUBLESHOOTING
STARTER MOTOR DOES NOT TURN
1. Standard inspection
Check the following:
– Battery condition
– Burned No. 4 (30 A) fuse
– Burned No. 5 (10 A) fuse
Are the above items in good condition?
YES – GO TO STEP 2.
NO – Replace or repair the malfunctioning part(s).
2. Starter switch operation inspection
Turn the combination switch to the START position.
Check the operation of the starter relay.
Does the starter relay click?
YES – GO TO STEP 3.
NO – GO TO STEP 5.
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 – • Poorly connected starter motor cable
• Faulty starter magnetic switch
NO – GO TO STEP 4.
4. Starter magnetic switch inspection
Apply battery voltage to the starter solenoid S
terminal [1] and starter motor body.
Check for continuity at the starter motor B terminal
[2] and starter motor M terminal [3].
Is there continuity by connecting the battery?
YES – GO TO STEP 5.
NO – Faulty starter magnetic switch.
[2] [1]
[3]