Question about 2000 Yamaha WR 400 F
Listen near the solenoid while trying to start--if you get a fairly loud 'click', the primary circuit is ok, but the solenoid heavy contacts are not making--repair or replace the solenoid if sealed. If no click, check the small terminals with a test light. The light should go out on one when the start switch is pushed. If the light never comes on, check the other small terminal--it should be lit at all times whenever the ignition switch is on, even when the start switch is pushed. If it goes out too, there is a poor connection between the ignition switch and the solenoid. If neither terminal loses power, trace the start button circuit back to the solenoid. It is likely open somewhere between--usually a push-together connection. Hope this make sense and helps!
Posted on May 07, 2010
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Posted on Jan 02, 2017
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Damaged harness. Inspect the wiring harness for damage. If the harness appears to be OK, disconnect the PCM, turn the ignition ON and observe a voltmeter connected to the EVAP Canister Purge solenoid driver circuit at the PCM harness connector while moving connectors and wiring harnesses related to the EVAP Canister Purge solenoid. A change in voltage will indicate the location of the fault.
The numbers below refer to the step numbers on the Diagnostic Table.
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