Have a 2017 cforce 500 that will not crank. It is not the battery, the key switch is working as it should, the kill switch is working as it should, the starter button is getting power and making contact, all fuses and relays are good. The one thing I can not find is the starter diode, can someone tell me where this is located so I can test it to make sure current is flowing the right direction for it. The starter relay is not getting any power to the trigger wire.

[2015 Z Force 800 53/Trail EPS]

Have a 2017 cforce 500 that will not crank. It is not the battery, the key switch is working as it should, the kill switch is working as it should, the starter button is getting power and making contact, all fuses and relays are good. The one thing I can not find is the starter diode, can someone tell me where this is located so I can test it to make sure current is flowing the right direction for it. The starter relay is not getting any power to the trigger wire.

I just took a quick walk through the CF500 wiring diagram and didn't see any diode. Admittedly it was a quick and dirty viewing....but all I saw was just the key switch power to interlocks to kill switch to start button to aux start relay and finally the starter solenoid. Maybe you have an interlock relay problem. You they must have either the ground from the neutral light being on or power from the brake light power wire. Maybe one is missing. If you need a copy of the manual just donate 3 bucks to the site and PM me. I'll be happy to send a link.

Have a 2017 cforce 500 that will not crank. It is not the battery, the key switch is working as it should, the kill switch is working as it should, the starter button is getting power and making contact, all fuses and relays are good. The one thing I can not find is the starter diode, can someone tell me where this is located so I can test it to make sure current is flowing the right direction for it. The starter relay is not getting any power to the trigger wire.

I just took a quick walk through the CF500 wiring diagram and didn't see any diode. Admittedly it was a quick and dirty viewing....but all I saw was just the key switch power to interlocks to kill switch to start button to aux start relay and finally the starter solenoid. Maybe you have an interlock relay problem. You they must have either the ground from the neutral light being on or power from the brake light power wire. Maybe one is missing. If you need a copy of the manual just donate 3 bucks to the site and PM me. I'll be happy to send a link.

Sent you a PM

[2015 Z Force 800 53/Trail EPS]

Have a 2017 cforce 500 that will not crank. It is not the battery, the key switch is working as it should, the kill switch is working as it should, the starter button is getting power and making contact, all fuses and relays are good. The one thing I can not find is the starter diode, can someone tell me where this is located so I can test it to make sure current is flowing the right direction for it. The starter relay is not getting any power to the trigger wire.

I just took a quick walk through the CF500 wiring diagram and didn't see any diode. Admittedly it was a quick and dirty viewing....but all I saw was just the key switch power to interlocks to kill switch to start button to aux start relay and finally the starter solenoid. Maybe you have an interlock relay problem. You they must have either the ground from the neutral light being on or power from the brake light power wire. Maybe one is missing. If you need a copy of the manual just donate 3 bucks to the site and PM me. I'll be happy to send a link.

Sent you a PM

Send you a link. Thanks

So I followed the schematic and I can not find a solution to this. I have power at the auxiliary start relay, the relay itself tested good and have tried another relay. Kill switch, key switch, start button all good and getting power and no power when they should not be. The two fused red wires going to the solenoid are powered up, the green and yellow/red wire to the starter solenoid do not get any power and I kept looking for voltage on the green wire while playing with the hand and foot brake levers and also the gear shifter. Starting to wonder if the ecu went.

[2015 Z Force 800 53/Trail EPS]

So I followed the schematic and I can not find a solution to this. I have power at the auxiliary start relay, the relay itself tested good and have tried another relay. Kill switch, key switch, start button all good and getting power and no power when they should not be. The two fused red wires going to the solenoid are powered up, the green and yellow/red wire to the starter solenoid do not get any power and I kept looking for voltage on the green wire while playing with the hand and foot brake levers and also the gear shifter. Starting to wonder if the ecu went.

If the ECU went it should still turn-over..just won't start.

So I followed the schematic and I can not find a solution to this. I have power at the auxiliary start relay, the relay itself tested good and have tried another relay. Kill switch, key switch, start button all good and getting power and no power when they should not be. The two fused red wires going to the solenoid are powered up, the green and yellow/red wire to the starter solenoid do not get any power and I kept looking for voltage on the green wire while playing with the hand and foot brake levers and also the gear shifter. Starting to wonder if the ecu went.

If the ECU went it should still turn-over..just won't start.

Forgot to add that i did something I dont EVER do which was cross the starter solenoid with the spark plug out and have no spark while it was cranking

[2015 Z Force 800 53/Trail EPS]

So I followed the schematic and I can not find a solution to this. I have power at the auxiliary start relay, the relay itself tested good and have tried another relay. Kill switch, key switch, start button all good and getting power and no power when they should not be. The two fused red wires going to the solenoid are powered up, the green and yellow/red wire to the starter solenoid do not get any power and I kept looking for voltage on the green wire while playing with the hand and foot brake levers and also the gear shifter. Starting to wonder if the ecu went.

If the ECU went it should still turn-over..just won't start.

Forgot to add that i did something I dont EVER do which was cross the starter solenoid with the spark plug out and have no spark while it was cranking

Well that sounds like you don't have power to the ignition or the starter circuits. Shouldn't be that tough to figure out. Kill switch or interlocks come to mind first. I assume all fuses and fuse holders have been checked. As I recall it has just a 2-wire key switch. Test it and move forward.

Key switch has been bypassed, all fuses have power on each side, all relays tested. The gray/red wire from the start button sends power to the start relay which then should be but the yellow/red wire at the relay has no power going to the solenoid, the black/brown wire on this relay is tied into the other relays and i get no power coming from the green/white wire which that wire is coming from the ecu. The white/black wire at kill switch goes to fuel pump and then splits off to the ecu in two places. I have watched my multimeter on the kill switch to verify it is working properly

Is that a 500HO by chance?

You mention that power gets to the aux starter relay from the starter switch.

Did the auxiliary starter relay put voltage out on the switch side when the starter button was hit?

Is that a 500HO by chance?

You mention that power gets to the aux starter relay from the starter switch.

Did the auxiliary starter relay put voltage out on the switch side when the starter button was hit?

This is not a H.O.  With the key and kill switch on I get power coming from the start button which is the grey/red wire to the starter relay but it does not not power up the yellow/red wire which goes to the starter solenoid. I put a jumper between these two wires at the relay location and engine cranks but no spark. The green white wire going into the the starter relay has no power which that wire comes out of the ecu, the black/brown wire has keyed power going to this relay. The green wire at the starter solenoid does not get power to it, this would be the wire that needs to be hot to be able to start in gear with the brakes applied. Brake lights come on, neutral and park light comes on but I get no power there when applying the brakes and I have tested all the relays with a relay tester and they all check out good. No power at the fuel pump, injector, tps and all of that stuff either. The only things that come on are the dash and the rest of the lighting circuit.

OK. If the wiring diagram from my 2014 published copy is correct, the first (aux) starter relay won't flip unless the energizing circuit is grounded at pin 16 (G/BR) of the ECU. I suspect the ECU only grounds the circuit if all other signals are appropriate (safety lockouts and such).

Can you test to see if the other side of the energizing circuit (G/BR) is grounded? If it is not grounded at the relay, then the ECU pin needs to be checked.  If the pin is grounded, then there is a break in the wiring someplace.  If the ECU pin is not grounded, then we need to trouble shoot that issue first, because nothing else will work until that circuit is complete.