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STARTER SYSTEM DIAGNOSIS AND SERVICE

STARTER SYSTEM DIAGNOSIS AND SERVICE. STARTING SYSTEM COMPONENTS. BATTERY CABLES AND WIRING IGNITION SWITCH NEUTRAL SAFETY SWITCH STARTER RELAY/SOLENOID STARTER MOTOR. TROUBLESHOOTING. FOUR CATEGORIES NO CRANK SLOW CRANK SPINS BUT NO CRANK EXCESSIVE NOISE. PROCEDURES.

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STARTER SYSTEM DIAGNOSIS AND SERVICE

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  1. STARTER SYSTEM DIAGNOSIS AND SERVICE

  2. STARTING SYSTEM COMPONENTS • BATTERY • CABLES AND WIRING • IGNITION SWITCH • NEUTRAL SAFETY SWITCH • STARTER RELAY/SOLENOID • STARTER MOTOR

  3. TROUBLESHOOTING • FOUR CATEGORIES • NO CRANK • SLOW CRANK • SPINS BUT NO CRANK • EXCESSIVE NOISE

  4. PROCEDURES • CONSISTENT METHOD • VISUAL INSPECTION • BATTERY PERFORMANCE • VERIFY ENGINE CONDITION IF NO CRANK OR SLOW CRANK • (BE CAUTIOUS)

  5. TROUBLE CHARTS • FIND NORMAL AMPERAGE STARTER DRAW SPECS. • BY SYMPTOM, CAN SOMETIMES DIAGNOSE PROBLEM IN STARTING SYSTEM • TESTING EQUIPMENT MUST BE ACCURATE

  6. QUICK TEST • TURN HEADLIGHTS ON • CRANK ENGINE • NOTE RESULTS • DON’T OVERCRANK ENGINE

  7. CURRENT DRAW TEST • DISABLE IGN. • VISUAL INSPECT • HOOK UP EQUIPMENT • TURN OFF ALL ELECTRICAL LOADS • PERFORM TEST

  8. INSULATED CIRCUIT RESISTANCE TEST • VOLTMETER ON LOW SCALE • HOOK UP EQUIPMENT • CRANK ENGINE • NOTE VOLTAGE • LESS THAN 0.2 VOLT

  9. GROUND CIRCUIT RESISTANCE TEST • SELECT LOW SCALE • HOOK UP EQUIPMENT • CRANK ENGINE • NOTE RESULTS • LESS THAN 0.2V

  10. SOLENOID CIRCUIT TEST • DISABLE IGN. • LOW VOLT SCALE • CONNECT ACROSS SOLENOID • CRANK ENGINE • VOLTAGE LESS THAN 0.1 VOLT

  11. FREE SPEED TEST • TESTS STARTER FREE LOAD • AMPS • RPM • CAUTION! • COMPARE RESULTS TO SPECS

  12. STARTER R & R • DISCONNECT BATTERY! • IDENTIFY WIRES • PAY ATTENTION TO SHIMS, ETC. • ADJUST DRIVE GEAR CLEARANCE • RE-CK OPERATION

  13. THE END

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