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Z997 won't start

3882 Views 26 Replies 6 Participants Last post by  SRG
My Z997 (bought 2010) won't start. I get an error code of 3-2 which indicates low voltage. I took the battery cables off and the multimeter shows 12.97V. I replaced the Start Relay. I pulled the cover off the fuse box and both are ok as are the diodes. I am not a mechanic.

Any thoughts on what could be wrong? Does anyone know the part # of these diodes?

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Check and clean all ground connections at the battery, and chassis side of negative cable, with a wire brush or wire wheel, file. Also, check for broken ground cables. Even the wire inside whatever type of connector is used, can oxidize and cause a bad connection inside the connector/lug. A bad ground, will/can cause a no start issue.
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Also, clean the chassis where they meet, while you're in their cleaning the connector.
I cleaned the battery posts and cable connectors, still won't start. I will check the chassis side connections next, thank you.
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Ok, is it cranking at all, and not lighting off, or not even cranking?

Also, make sure the PTO has not accidentally been engaged. Park brake is set. Verify seat safety switch is functioning correctly, or bypassed. You can also take the battery to a local auto parts store where they can perform a load test on it. Is it the original battery? If it's an 11 year old battery, it may have just finally gave up. That's a pretty good run, if it's the original battery.

The oil light could just be a by-product of the electrical issue. It could also be due to low a oil level. Verify oil level is correct. There may be a protection built into the low oil pressure sensor, that prevents it from being run, so no damage can occur from low oil/low pressure.
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To engage the mower deck, with the yellow push/pull knob, that is the PTO. It's an electric engagement device.

Battery could need replaced. 12.97v static, could be way lower when it gets load drawn from it while it is trying to turn the starter over. That's where a load test comes in, to tell if the battery is performing as desired under load. Static testing won't reveal that. I'd take the battery to a local auto store, and have it load tested. It's usually free to have done.

Even 4-5 years from a seasonal use battery is a pretty good run.
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No problem. And, no guarantees, on the direction I pointed you.
Have that battery tested before you spend good money on a new one. It may not be the problem. A free test will tell you if it is.
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(y)
Follow up with what ya find out. Always good to be able to read the solutions to the problems. Too many times, topics are left stranded with no info about the resolution.
Ok, will do. Thanks again.
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Nice.
Hopefully you get another 4-5yrs at a minimum.
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