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Old 10-02-2022, 09:00 PM   #1
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No start key switch

Will not start from key switch Spartan chassis
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Old 10-02-2022, 11:49 PM   #2
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Are you saying CRANKS NO START, or NO CRANK, NO START? There are often a few cube RELAYS in the under hood relay/fuse box that maybe the cause, and sometimes you can swap around to troubleshoot? One is labeled STARTER, other is FUEL PUMP. NOT sure about Spartan? Good Luck
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Old 10-04-2022, 08:01 AM   #3
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No crank . I be checked everything from the switch to the rear electrical cabinet and everything is good. All the relays have been checked and replaced still nothing. I’ve replaced the switch also. I installed a emergency switch from the start batteries to the solenoid and it will crank and start.
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Old 10-04-2022, 01:28 PM   #4
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The NEUTRAL SWITCH usually controls activation of the cube relay, so either that, or broken wire?
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Old 10-04-2022, 02:09 PM   #5
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No start key switch

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No crank . I be checked everything from the switch to the rear electrical cabinet and everything is good. All the relays have been checked and replaced still nothing. Iíve replaced the switch also. I installed a emergency switch from the start batteries to the solenoid and it will crank and start.


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Have you checked this sitting on frame rail beside engine.

Get a remote start button and clip to bigger bolts and push button. If it starts relay is bad.
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Old 10-04-2022, 03:44 PM   #6
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Visual on relay socket female connectors look good? Rodent wire damage sometimes on side/bottom of harness where cannot see, so use mirror/ light?
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Old 10-05-2022, 05:30 PM   #7
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I haven’t been able to find that relay.
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Old 10-06-2022, 12:27 AM   #8
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Found THIS Online: OTHERWISE, maybe follow small wire off starter solenoid? (Some PICS show a cube relay on firewall directly above starter?) (EDIT/add, OTHER Pics show a metal board on frame with relays/ solenoids?) https://images.search.yahoo.com/yhs/...6&action=click
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Old 10-06-2022, 02:24 PM   #9
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Everything between engine-mounted solenoid and batteries was installed by coach mfgr. so references to other brands is not relevant.
When using your multimeter, do you get 12V at one small terminal on the starter solenoid? if no, ignition switch and/or wiring between switch, solenoid and start battery is bad. When someone holds the ignition key in start position, do you get 12V at both small terminals on starter solenoid? If yes to either question, solenoid is bad.
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Old 10-06-2022, 02:33 PM   #10
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If the transmission control is powering up, you need to find that starter relay. It sends 12 volts to the starter solenoid, right from the batteries.

The key only sends the start signal to that starter relay.

If your trans controller isn't powering up, look for a bad connection or fuse to the transmission controller. That's often right off batteries too. Often a inline fuse in a bundle of wires.
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Old 10-07-2022, 02:04 PM   #11
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Quote:
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I havenít been able to find that relay.


Mine is on the passenger side on top of frame rail beside engine.
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