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Old 01-17-2013, 01:30 PM   #1 (permalink)
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Default stupid p0122 story and help

i know i know. time and time again we always have been asked this question about this dumb code. well ive been researching and came across nothing so far, i just need a lil help because this last week has been hell from finding out my motor was bad to taking it out one day to dropping in a newer motor the next day. well my harness from the previous owner i would say 2 years ago i got it was all chopped up and wires were just twisted together, so i went ahead and started fixing everything, i left out the tps ones because they looked decent to me. well now that i have the motor running in tip top shape the damn p0122 code is killing me, its showing low voltage to circuit or whatever, well i check it and im getting 1.20 volts. so i go ahead and reset the computer and take the battery off and erase the codes with my diablo but wait, after that i dont even start the car yet and its already reading the code like it cant be deleted at all. im frustrated with this crap already, my car has just been fully redone by me and my wife and buddy and i just wanna feel my beast back on the streets but the idle is some what crappy and the afrs are so bad i mean it goes striahgt to 11.7 at idle thats horrible im running so rich i just smell gas as it sits normal. i tried replacing the wires some what by the sensor where the guy before me had cut up with a knife it looked like thinking that would fix it, but still nothing. im at a lost road here i need some help. im exhausted and tired, im thinking today im gonna look at the wires going all the way to the ecu, my question is can anyone think of anything else like where is a ground for this that everyone talks about, and im 99% sure its not the sensor since its been replace recently months ago, and moving the wires around while the car is running does nothing . thanks and sorry about the bad grammer.
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Dyno numbers/ 280hp/355tq on mustang dyno..
12.6 @ 110 60ft 1.8
12.8 @ 113 60ft 1.9
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Old 01-17-2013, 02:21 PM   #2 (permalink)
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P0122-THROTTLE POSITION SENSOR #1 LOW
When Monitored: With the ignition on. Battery voltage greater than 10 volts.
Set Condition: Throttle Position Sensor voltage at the PCM is less than 0.0978 of a volt.
One Trip Fault.
POSSIBLE CAUSES
THROTTLE POSITION SENSOR SWEEP
INTERMITTENT CONDITION
(K6) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(K6) 5 VOLT SUPPLY CIRCUIT OPEN
TP SENSOR INTERNAL FAILURE
(K22) TP SIGNAL CIRCUIT SHORTED TO GROUND
(K22) TP SIGNAL CIRCUIT SHORTED TO (K167) SENSOR GROUND CIRCUIT
PCM (K6) 5 VOLT SUPPLY CIRCUIT
PCM (K22) TP SENSOR SIGNAL
TEST ACTION APPLICABILITY
1 Ignition on, engine not running.
With the DRBIIIt, read the Throttle Position Sensor voltage.
Is the voltage below 0.2 of a volt?
All
Yes ! Go To 2
No ! Go To 10
2 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K7) 5 volt Supply circuit in the TP Sensor harness
connector.
Is the voltage between 4.5 to 5.2 volts?
All
Yes ! Go To 3
No ! Go To 7
75
DRIVEABILITY - NGC
TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the TP Sensor harness connector.
With the DRBIIIt, monitor the TP Sensor voltage.
Ignition on, engine not running.
Is the voltage above 4.5 volts?
All
Yes ! Replace the Throttle Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No ! Go To 4
4 Turn the ignition off.
Disconnect the TP harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K22) TP Signal circuit at the TP
Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes ! Repair the short to ground in the (K22) TP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No ! Go To 5
5 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the (K22) TPS Signal circuit and the (K167) Sensor
ground circuit in the TPS harness connector.
Is the resistance below 100 ohms?
All
Yes ! Repair the short to (K4) Sensor ground in the (K22) TP Signal
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No ! Go To 6
6 NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accordance
with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
7 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K6) 5 volt Supply circuit in the TP
Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes ! Repair the short to ground in the (K6) 5 volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No ! Go To 8
76
DRIVEABILITY - NGC
P0122-THROTTLE POSITION SENSOR #1 LOW — Continued
TEST ACTION APPLICABILITY
8 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS
RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K6) 5 volt Supply circuit from the TP Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
All
Yes ! Go To 9
No ! Repair the open in the (K6) 5 volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
9 NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accordance
with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
10 Ignition on, engine not running.
With the DRBIIIt, monitor the Throttle Position Sensor voltage.
Slowly open the throttle from the idle position to the wide open throttle position.
Does voltage start at approximately 0.7 of a volt and go above 3.5 volts with a smooth
transition?
All
Yes ! Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
No ! Replace the Throttle Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
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Old 01-17-2013, 02:21 PM   #3 (permalink)
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just wondering did you try all this^^^???
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TUNED By MindMelt101
MyBuild Thread
10.99 @132.23 1.70 60ft 27 psi
Need Fuel setup ideas click here
Props go out to:
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Old 01-17-2013, 04:15 PM   #4 (permalink)
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Hahahvent tried any of that. Guess I need to get a volt meter. I used my diablo and it was reading 1.20 volts I guess right at the sensor it self... Where is this so called ground at. Is it in the actual Ecu area where the wires go. Thanks by the way
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Stock Turbo MONSTER!!!
E85/ 1025cc injectors
Agp Wastegate
255 Walbaro Fuel Pump
Noribilt Dyno Tune/PJB Work!!
ACT 6 Puck clutch
3in TurboBack EXhaust
TurboXS RFL Bov
GodSpeed BFMIC
Dyno numbers/ 280hp/355tq on mustang dyno..
12.6 @ 110 60ft 1.8
12.8 @ 113 60ft 1.9
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Old 01-18-2013, 10:41 PM   #5 (permalink)
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Ok I need a little help here. This crap is really getting on my nerves and I'm not much of electrical kinda guy. So far I checked at the sensor with the ground connected to the negative battery terminal, I get 1.20volts still. Ok so I pull the Ecu off and the clip around it and check the actual prong that the wire goes into on the Ecu board well coming off the board is only 1.20 volts. So help me out here why am I getting only 1.20 v off the Ecu. Where are the grounds I'm suppose to be looking for. Please help I really wanna drive my car tomorrow... :/
__________________
Stock Turbo MONSTER!!!
E85/ 1025cc injectors
Agp Wastegate
255 Walbaro Fuel Pump
Noribilt Dyno Tune/PJB Work!!
ACT 6 Puck clutch
3in TurboBack EXhaust
TurboXS RFL Bov
GodSpeed BFMIC
Dyno numbers/ 280hp/355tq on mustang dyno..
12.6 @ 110 60ft 1.8
12.8 @ 113 60ft 1.9
Srt4man66 is offline   Reply With Quote
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