E38 L99 6L80E start and dies 2 second
Thread Starter
Teching In
Joined: Dec 2016
Posts: 9
Likes: 0
E38 L99 6L80E start and dies 2 second I am asking for your understanding.
I'm learning ...
L99 6L80E on 3gen GTA
- O2 rear removed
- Vats turned off in general os in hp tuners.
- No BCM in my application.
- No ABS in my application.
- No FPCM in my application.
The fuel pump controlled by the pump relay controlled with a green wire straight from the PCM appears to work properly.
Gas pedal is from corvette c6 Ls2 new from ebay.
HPT shows that 20% - 80% of DBW works
I tested different wiring connections, and I'm not sure which one
is correct for my connection.
Map sensor shows 167 Kpa and falls, is it okay?
The injector noid light does not flash between the injection pins.
The injection in the hot key position instead of the PCM mass shows the voltage.
It's only when it starts it disappears.
I can have a badly made can circuit, I made two ports.
I need to check ohms of the loop.
Could this have an effect on starting the engine above 2 seconds?
I will add that HPT works properly, reads and writes well in PCM and TCM.
Does BCM need to be removed somewhere in HPT?
Is ABS to be removed somewhere in HPT?
FPCM - not disabled.
Can any of them affect the lack of engine operation above 2 seconds?
I will test CMP and CKP with a noid lamp, or with a voltmeter, I have not done it yet.
See my tune, what I did not think about?
I'm learning, this is my first adventure.
0x7E8: P0120 - Throttle / Pedal Position Sensor A Circuit (Permanent)
0x7E8: P0122 - Throttle / Pedal Position Sensor A Circuit Low (Pending, Current, Old, Permanent)
0x7E8: P0223 - Throttle / Pedal Position Sensor / Switch B Circuit High (Pending, Current, Old, Permanent)
0x7E8: P0532 - A / C Refrigerant Pressure Sensor A Circuit Low (Current, Old, History)
0x7E8: P0557 - Brake Booster Pressure Sensor Circuit Low (Pending, Current, History)
0x7E8: P0606 - ECM / PCM Processor (Permanent)
0x7E8: P0615 - Starter Relay Circuit (History)
0x7E8: P2068 (Pending, Old)
0x7E8: U0109 - Lost Communication With Fuel Pump Control Module (Pending)
0x7E8: U0121 - Lost Communication With Anti-Lock Brake System (ABS) Control Module (Old)
0x7E8: U0140 - Lost Communication With Body Control Module (Pending)
I'm learning ...
L99 6L80E on 3gen GTA
- O2 rear removed
- Vats turned off in general os in hp tuners.
- No BCM in my application.
- No ABS in my application.
- No FPCM in my application.
The fuel pump controlled by the pump relay controlled with a green wire straight from the PCM appears to work properly.
Gas pedal is from corvette c6 Ls2 new from ebay.
HPT shows that 20% - 80% of DBW works
I tested different wiring connections, and I'm not sure which one
is correct for my connection.
Map sensor shows 167 Kpa and falls, is it okay?
The injector noid light does not flash between the injection pins.
The injection in the hot key position instead of the PCM mass shows the voltage.
It's only when it starts it disappears.
I can have a badly made can circuit, I made two ports.
I need to check ohms of the loop.
Could this have an effect on starting the engine above 2 seconds?
I will add that HPT works properly, reads and writes well in PCM and TCM.
Does BCM need to be removed somewhere in HPT?
Is ABS to be removed somewhere in HPT?
FPCM - not disabled.
Can any of them affect the lack of engine operation above 2 seconds?
I will test CMP and CKP with a noid lamp, or with a voltmeter, I have not done it yet.
See my tune, what I did not think about?
I'm learning, this is my first adventure.
0x7E8: P0120 - Throttle / Pedal Position Sensor A Circuit (Permanent)
0x7E8: P0122 - Throttle / Pedal Position Sensor A Circuit Low (Pending, Current, Old, Permanent)
0x7E8: P0223 - Throttle / Pedal Position Sensor / Switch B Circuit High (Pending, Current, Old, Permanent)
0x7E8: P0532 - A / C Refrigerant Pressure Sensor A Circuit Low (Current, Old, History)
0x7E8: P0557 - Brake Booster Pressure Sensor Circuit Low (Pending, Current, History)
0x7E8: P0606 - ECM / PCM Processor (Permanent)
0x7E8: P0615 - Starter Relay Circuit (History)
0x7E8: P2068 (Pending, Old)
0x7E8: U0109 - Lost Communication With Fuel Pump Control Module (Pending)
0x7E8: U0121 - Lost Communication With Anti-Lock Brake System (ABS) Control Module (Old)
0x7E8: U0140 - Lost Communication With Body Control Module (Pending)
Thread Starter
Teching In
Joined: Dec 2016
Posts: 9
Likes: 0
I do not have a specific scheme for DBW corvette C6 on L99.
But it's probably possible.
I made according to this pinout X1 - LS3 according to lt1swap.com,
http://www.lt1swap.com/2010camaro_ecm_pinouts.htm
but it did not work well in HPT. The engine stopped working after 2 seconds.
Then I tried to do it according to http://bdurfee.blogspot.com/2015/12/dbw-issues.html
The car did not start at all.
Then I made the DBW according to the escalade schema. (Attachment)
And HPT shows the work of APP on the green bar.
But mistakes appear again, even after deletion.
The engine does not have to work for more than 2 seconds.
What APP can I use for L99 without problems, C6 is a bad idea ???
I do not want the original APP from camaro 5, it does not fit well.
But it's probably possible.
I made according to this pinout X1 - LS3 according to lt1swap.com,
http://www.lt1swap.com/2010camaro_ecm_pinouts.htm
but it did not work well in HPT. The engine stopped working after 2 seconds.
Then I tried to do it according to http://bdurfee.blogspot.com/2015/12/dbw-issues.html
The car did not start at all.
Then I made the DBW according to the escalade schema. (Attachment)
And HPT shows the work of APP on the green bar.
But mistakes appear again, even after deletion.
The engine does not have to work for more than 2 seconds.
What APP can I use for L99 without problems, C6 is a bad idea ???
I do not want the original APP from camaro 5, it does not fit well.
TECH Fanatic
Joined: Oct 2014
Posts: 1,220
Likes: 179
From: Virginia
All of your codes not related to the throttle position like Fuel Pump and BCM I would try setting to no error reported, if it lets you. I know that the BCM can mess with the ECU in newer cars for anti theft purposes, lock out the stereo and other weird stuff like that.
That MAP sensor needs a look. Like LSX said, it should read around 100 kpa with the key off, not 164. If it's getting voltage from somewhere, it might cause this, or the linear offset in your tune is WAY off. Take a stock reference file from a like year Camaro and copy the values over. If that's not the issue, then it's probably either a bad sensor or you have a wire crossed somewhere.
I don't have much info on the pedal issue. Hopefully someone else will chime in. It's not too late to go cable... lol.
That MAP sensor needs a look. Like LSX said, it should read around 100 kpa with the key off, not 164. If it's getting voltage from somewhere, it might cause this, or the linear offset in your tune is WAY off. Take a stock reference file from a like year Camaro and copy the values over. If that's not the issue, then it's probably either a bad sensor or you have a wire crossed somewhere.
I don't have much info on the pedal issue. Hopefully someone else will chime in. It's not too late to go cable... lol.
Thread Starter
Teching In
Joined: Dec 2016
Posts: 9
Likes: 0
I tested different connections to my gas pedal. However, both circuits get +5 and probably the appropriate ground reference.
I do not know how to check the ground reference.
The two signal lines on my gas pedal have different voltages.
Pin E Sensor 1 range 0.93 - 3.40 V.
Pin B Sensor 2 range 0.48 - 1.74 V.
How should it be correct?
I do not know how to check the ground reference.
The two signal lines on my gas pedal have different voltages.
Pin E Sensor 1 range 0.93 - 3.40 V.
Pin B Sensor 2 range 0.48 - 1.74 V.
How should it be correct?
Thread Starter
Teching In
Joined: Dec 2016
Posts: 9
Likes: 0
My MAP shows 4.99V power supply.
The L / GRN signal shows 2V on the key.
(I still have to check what PCM shows)
I wonder why I have a MAP with MEXICO inscription, because the LS3 MAP on Rockauto has the inscription JAPAN.
Last edited by Hubert Jakubowski; Apr 12, 2019 at 09:41 AM. Reason: PL >> ENG ;)
TECH Senior Member
Joined: Jun 2016
Posts: 22,293
Likes: 3,617
From: Central Cal.
https://forum.hptuners.com/showthrea...ap-sensor-info
My MAP pokazuje zasilanie 4,99V.
Sygnał L / GRN pokazuje 2V na kluczu.
(Nadal muszę sprawdzić, co pokazuje PCM)
Zastanawiam się, dlaczego mam MAPĘ z napisem MEXICO, ponieważ LS3 MAP na Rockauto ma napis JAPAN.
My MAP pokazuje zasilanie 4,99V.
Sygnał L / GRN pokazuje 2V na kluczu.
(Nadal muszę sprawdzić, co pokazuje PCM)
Zastanawiam się, dlaczego mam MAPĘ z napisem MEXICO, ponieważ LS3 MAP na Rockauto ma napis JAPAN.
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Verdad Gallardo Thread Starter
Teching In
Joined: Dec 2016
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P0120
The ECM detects that the throttle position sensor 1 voltage is less than 0.325 V or greater than 4.75 V for
greater than 1 s.
P0122
The ECM detects that the throttle position sensor 1 voltage is less than 0.325 V for greater than 1 s.
P0223
The ECM detects that the throttle position sensor 2 voltage is greater than 4.59 V for greater than 1 s.
APP Sensor 1
Operating Conditions: Ignition ON, engine OFF
Parameter Normal Range: 0.78-1.18 V
APP Sensor 2
Operating Conditions: Ignition ON, engine OFF
Parameter Normal Range: 0.39-0.59 V
The accelerator pedal assembly contains two accelerator pedal position (APP) sensors. The APP sensors are
mounted in the pedal assembly and are not serviceable. The APP sensors provide a signal voltage that changes
relative to the position of the accelerator pedal. The engine control module (ECM) supplies each sensor with a
signal circuit, 5 V reference circuit, and a low reference circuit.
P2120
The ECM detects that the APP sensor 1 voltage is less than 0.463 V or greater than 4.75 V for less than 1 s.
P2125
The ECM detects that the APP sensor 2 voltage is less than 0.325 V or greater than 2.6 V for less than 1 s.
The ECM detects that APP sensor 1 and APP sensor 2 disagree greater than 10 percent for less than 1 s.
Or
The ECM detects that both APP sensor 1 and APP sensor 2 are 5 percent greater than the learned
The ECM detects that the throttle position sensor 1 voltage is less than 0.325 V or greater than 4.75 V for
greater than 1 s.
P0122
The ECM detects that the throttle position sensor 1 voltage is less than 0.325 V for greater than 1 s.
P0223
The ECM detects that the throttle position sensor 2 voltage is greater than 4.59 V for greater than 1 s.
APP Sensor 1
Operating Conditions: Ignition ON, engine OFF
Parameter Normal Range: 0.78-1.18 V
APP Sensor 2
Operating Conditions: Ignition ON, engine OFF
Parameter Normal Range: 0.39-0.59 V
The accelerator pedal assembly contains two accelerator pedal position (APP) sensors. The APP sensors are
mounted in the pedal assembly and are not serviceable. The APP sensors provide a signal voltage that changes
relative to the position of the accelerator pedal. The engine control module (ECM) supplies each sensor with a
signal circuit, 5 V reference circuit, and a low reference circuit.
P2120
The ECM detects that the APP sensor 1 voltage is less than 0.463 V or greater than 4.75 V for less than 1 s.
P2125
The ECM detects that the APP sensor 2 voltage is less than 0.325 V or greater than 2.6 V for less than 1 s.
The ECM detects that APP sensor 1 and APP sensor 2 disagree greater than 10 percent for less than 1 s.
Or
The ECM detects that both APP sensor 1 and APP sensor 2 are 5 percent greater than the learned