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7 Electrical System Service
Troubleshooting Charts
Check battery. Refer to C. Battery Tests. Replace the battery.
Component Tests OK
Component
Fails Test
Check circuit breaker. Refer to O. Circuit Breaker
Test.
Replace the circuit
breaker.
Component Tests OK
Component
Fails Test
Check ground. Refer to B. Check/Clean
Ground Cable.
Clean both ends of the
negative battery cable.
Component Tests OK
Component
Fails Test
Check voltage regulator. Refer to Engine Manual. Replace the defective
engine component(s).
Component Tests OK
Component
Fails Test
Check engine alternator. Refer to Engine Manual. Replace the defective
engine component(s).
Component Tests OK
Component
Fails Test
Check ignition switch. Refer to G. Ignition Switch
Tests.
Replace the ignition
switch.
Done
Component
Fails Test
Battery not charging:
Check charging voltage. Refer to E. Charging
Voltage Check.
Replace the defective
engine component(s).
Component Tests OK
Component
Fails Test
Safety interlock malfunction:
Refer to “Engine Will Not Turn Over”