hi
I have error code 14 "supply voltage too low"
its showing 2.9-3.8 battery volts, ignition voltage is battery or alternator voltage if engine running.12-13.5v
Ive checked power feeds and grounds and all are good.
Any suggestion as to why i have this annomily?
error 14
Re: error 14
What conditions cause the error? Active all the time or occurs while driving? What sensors/sw/devices are you powering with 5v?
When you send the 'clear error codes' does it clear? If it's not shown on your toolbar you can enable it with 'View -> Toolbars -> Data Acquisition Send Command' is checked. On the drop down in the middle of the toolbar change it to 'Reset Errors'. Press send while live data is active to clear codes.
When you send the 'clear error codes' does it clear? If it's not shown on your toolbar you can enable it with 'View -> Toolbars -> Data Acquisition Send Command' is checked. On the drop down in the middle of the toolbar change it to 'Reset Errors'. Press send while live data is active to clear codes.
Re: error 14
the error code comes on after a while of just ignition on.
It doesn't drive the wheels at all. i had the wiring on the wrong pins in the tcm mechatronic for the speed sensors, which i have now recitifed. it would drive the wheels forward and reverse in limp mode 6th gear forward when i had the incorrect speed wiring, but not now.
Its like there is a bad connection somewhere but I'm at a loss where, as i dont know where the battery voltage measurement is taken from.
I can see the battery voltage on the dashboard reading between 2.9 and 3.8 volts. What is this voltage supposed to be? Why would this be low? Where does it read this value from?
It doesn't drive the wheels at all. i had the wiring on the wrong pins in the tcm mechatronic for the speed sensors, which i have now recitifed. it would drive the wheels forward and reverse in limp mode 6th gear forward when i had the incorrect speed wiring, but not now.
Its like there is a bad connection somewhere but I'm at a loss where, as i dont know where the battery voltage measurement is taken from.
I can see the battery voltage on the dashboard reading between 2.9 and 3.8 volts. What is this voltage supposed to be? Why would this be low? Where does it read this value from?
Re: error 14
So to make sure
You have Pins 51,52,53 connected directly to the Battery Positive??
You have Pins 43,44,45 all connected to Battery Ground??
Note that Pins 43,44,45 do not go to the chassis ground but they connect to the battery ground.
You have Pins 1,2,3 all connected to Ground??
On your Dash Board you should have 2 battery voltage measurements shown. One is Battery and the other is Ignition. Both should be near equal all the time. My guess is you need to confirm your grounds are good and connected where they need to be. Also make sure your 51,52,53 pins are on Batt Pos.
You have Pins 51,52,53 connected directly to the Battery Positive??
You have Pins 43,44,45 all connected to Battery Ground??
Note that Pins 43,44,45 do not go to the chassis ground but they connect to the battery ground.
You have Pins 1,2,3 all connected to Ground??
On your Dash Board you should have 2 battery voltage measurements shown. One is Battery and the other is Ignition. Both should be near equal all the time. My guess is you need to confirm your grounds are good and connected where they need to be. Also make sure your 51,52,53 pins are on Batt Pos.
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- batt volts.JPG (37.2 KiB) Viewed 2705 times
Re: error 14
If all the power and ground pins are wired correctly the only option is something is wired wrong on the trans.
Re: error 14
hi m4 comp
Thanks for your reply i have tripple checked all power and grounds.
I'm a little confused about the difference between battery ground and chassis ground. as don't they both connect together as such?
Your sceenshot shows the battery voltage about the same as ign voltage. whereas thats where battery on mine is around 3 volts and the ign is around 12 volts.
So that probably means that i have something incorrect in the mechatronic unit.
Thanks for your input at least i have somewhere to look now. (I just didnt want to pull the mechatronic unit again)
Thanks for your reply i have tripple checked all power and grounds.
I'm a little confused about the difference between battery ground and chassis ground. as don't they both connect together as such?
Your sceenshot shows the battery voltage about the same as ign voltage. whereas thats where battery on mine is around 3 volts and the ign is around 12 volts.
So that probably means that i have something incorrect in the mechatronic unit.
Thanks for your input at least i have somewhere to look now. (I just didnt want to pull the mechatronic unit again)
Re: error 14
So if you are 100% sure the TCU connections are correct then yes I would assume something is wired incorrectly in the trans.
The reason for using a Battery Ground or Battery Positive is to prevent noise from what is called a ground loop. Since the solenoids are pulsed any noise would interfere with their operation. Going straight to the battery makes sure the TCU is the only device being powered and no other component is using the same 'ground' path.
The reason for using a Battery Ground or Battery Positive is to prevent noise from what is called a ground loop. Since the solenoids are pulsed any noise would interfere with their operation. Going straight to the battery makes sure the TCU is the only device being powered and no other component is using the same 'ground' path.