STARTER SYSTEM DIAGNOSIS AND SERVICE

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STARTER SYSTEM DIAGNOSIS AND SERVICE
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STARTING SYSTEM COMPONENTS

• BATTERY
• CABLES AND WIRING
• IGNITION SWITCH
• NEUTRAL SAFETY SWITCH
• STARTER RELAY/SOLENOID
• STARTER MOTOR

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TROUBLESHOOTING

• FOUR CATEGORIES
• NO CRANK
• SLOW CRANK
• SPINS BUT NO CRANK
• EXCESSIVE NOISE

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PROCEDURES

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

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TROUBLE CHARTS

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

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QUICK TEST

• TURN HEADLIGHTS ON
• CRANK ENGINE
• NOTE RESULTS
• DONT OVERCRANK ENGINE

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CURRENT DRAW TEST

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

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INSULATED CIRCUIT RESISTANCE TEST

• VOLTMETER ON LOW SCALE
• HOOK UP EQUIPMENT
• CRANK ENGINE
• NOTE VOLTAGE
• LESS THAN 0.2 VOLT

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GROUND CIRCUIT RESISTANCE TEST

• SELECT LOW SCALE
• HOOK UP EQUIPMENT
• CRANK ENGINE
• NOTE RESULTS
• LESS THAN 0.2V

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SOLENOID CIRCUIT TEST

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

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FREE SPEED TEST

• TESTS STARTER FREE LOAD
• AMPS
• RPM
• CAUTION!
• COMPARE RESULTS TO SPECS

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STARTER R R

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

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THE END