Troubleshooting - TOHATSU BFT75A Service Manual

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STARTING SYSTEM TROUBLESHOOTING
STARTER MOTOR DOES NOT TURN
1. Standard inspection
Check the following:
– Battery condition
– Blown No. 2 (10 A) fuse
– Blown No. 6 (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.
Does the starter relay click?
YES
NO
3. Starter solenoid inspection
Turn the combination switch OFF.
Remove the starter motor (page 9-5).
Check for continuity between the S terminal and
front bracket.
Check for continuity between the S terminal and M
terminal.
Is there continuity?
YES
NO
4. Starter motor inspection
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
– GO TO STEP 2.
– Replace or repair the malfunctioning part(s).
– GO TO STEP 3.
– GO TO STEP 5.
– GO TO STEP 4.
– Faulty starter solenoid.
– • Poorly connected starter motor cable
• Repair the open circuit in the starter
cable (+) or fuse cable.
• Faulty PGM-FI/Main relay
– Inspect the starter motor (page 9-19).
STARTING SYSTEM
9-3