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Offline Cfmoto owwer

C-Force 520L EFI starting issues
« on: June 19, 2021, 09:49:45 AM »
Hello everyone, I am new here
First it is worth mentioning that I'm from Europe so I have C-Force 520L EFI EPS model.
So now after it has been ridden 4000km, I'm experiencing starting issues. At first, the starting solenoid was continuosly clicking when attempting to start so it was easy to guess that problem is with the solenoid. But turned out, that while removing the solenoid and testing it with 12V voltage, it worked fine so problem is not with the solenoid.
When measuring voltage on the solenoid while it was clicking, it showed around 2V not 12V as expected. Sadly after some time the fuel pump also stopped working when you toggled the igination button on. So now the fuel pump doesn't work, nor does the engine turn over.
Measuring the voltage on the fuel pump while it should be running, it showed no voltage there so the problem is somewhere else.
TL,DR: C-Force 520L EFI EPS doesn't turn over, solenoid continuosly clicks on start, fuel pump not engaging but is okay
So now questions:
From where to find the electric scheme for this specific c-force model?
How to continue solving the listed problems?



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Offline NMKawierider

Re: C-Force 520L EFI starting issues
« Reply #1 on: June 19, 2021, 11:04:02 AM »
You just have a bad connection-either battery cable or main fuse holder(not fuse), or a bad battery..ie open cell.
2015 Z Force 800 53/Trail EPS
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage |7- 9.7" GPS Systems | Bandit Springs Rear & Gen-3 Shocks Front | Cage Chop Mod

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Offline doug80638

Re: C-Force 520L EFI starting issues
« Reply #2 on: June 20, 2021, 09:19:01 AM »

Agreed.

Bad battery. Bad (high resistance) connection, or bad ground.
2017 Zforce 800 - Red
SuperATV Flip windshield
Tusk soft rear window
Uni-Filter foam air filter
Bandit springs

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Offline Cfmoto owwer

Re: C-Force 520L EFI starting issues
« Reply #3 on: June 20, 2021, 11:15:44 AM »

Agreed.

Bad battery. Bad (high resistance) connection, or bad ground.

Bad battery can be ruled out since even when battery was being charged an attempt to start wasn't successful even though it showed 14.7V on the dashboard.
Any idea where the bad connection could be?

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Offline doug80638

Re: C-Force 520L EFI starting issues
« Reply #4 on: June 29, 2021, 05:26:40 PM »

Anywhere along the starter circuit.

Battery posts, connectors, starter relay, starter, etc ...
2017 Zforce 800 - Red
SuperATV Flip windshield
Tusk soft rear window
Uni-Filter foam air filter
Bandit springs

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Offline lisandru

Re: C-Force 520L EFI starting issues
« Reply #5 on: September 20, 2021, 08:02:54 AM »
I've got the same issue on my 2020 CF 520 L EPS.
Issue: The ATV display showed alot of variation on digital voltmeter 14V→11V and stop in the night to work by running on full gas: https://vm.tiktok.com/ZMRVwYvnx/
and when i'm trying to start in the next day the ATV wasn't start and blink all the lights, turn off and so on.

Solution:
→ 15A fuse from the front was blown and damaged also the connectors
→ Starter relay + fuse 30A was blown and also the 4 pin connectors

After replacing of them everything working like a charm. Hope it helps you also √