Harry, das leigt and den Schreibfaulen, gemeint ist P 0121
So ne Taste zu drücken ist schon ne Herausforderung Bitte melden Sie sich an, um diesen Link zu sehen.
Wenn die Null davor steht, habe ich natürlich auch bisserl was 
DTC P0121 Throttle Position (TP) Sensor Performance
Circuit Description
The throttle position (TP) sensor is a potentiometer. The control module supplies the TP sensor a reference voltage, a signal, and ground circuits. When the throttle is depressed, the TP sensor signal rises to near the reference voltage. When the throttle is released, the TP sensor signal decreases from the reference voltage. The control module monitors the TP sensor signal circuit voltage in order to determine the throttle blade angle, or opening.
This DTC determines if the TP sensor signal input to the VCM does not closely match what the predicted value for the TP sensor should be. The VCM calculates what the TP signal voltage should be based on engine RPM. If the TP sensor voltage and the predicted TP sensor values do not closely match, this DTC will be set.
Conditions for Running the DTC
DTC P0122 not active
No active IAC DTCs
No active MAP sensor DTCs
The engine is running
BARO not in default
The throttle position is steady
Conditions for Setting the DTC
Stuck High Test
The throttle position is more than the calculated throttle position for more than 5 seconds
Stuck Low Test
The throttle position is less than the calculated throttle position for more than 5 seconds
Action Taken When the DTC Sets
The control module illuminates the malfunction indicator lamp (MIL) if a failure is detected during 2 consecutive key cycles.
The control module sets the DTC and records the operating conditions at the time the diagnostic failed. The failure information is stored in the scan tool Freeze Frame/Failure Records.
Conditions for Clearing the MIL or DTC
The control module turns OFF the MIL after 3 consecutive drive trips when the test has run and passed.
A history DTC will clear if no fault conditions have been detected for 40 warm-up cycles. A warm-up cycle occurs when the coolant temperature has risen 22°C (40°F) from the startup coolant temperature and the engine coolant reaches a temperature that is more than 70°C (158°F) during the same ignition cycle.
Use a scan tool in order to clear the DTCs.
Diagnostic Aids
The scan tool displays the throttle position in volts. It should display about 0.45 volts to 0.85 volts with the throttle closed and the ignition ON or at idle. The voltage should increase at a steady rate as the throttle is moved toward Wide Open Throttle (WOT).
The scan tool will read the throttle angle percentage. 0 percent at closed throttle, 100 percent at Wide Open Throttle (WOT). A MAP related DCT could set if the TP throttle angle is skewed or stuck at a value of less than 20 percent.
Check the condition of the connector and sensor terminals for moisture or corrosion, and clean or replace as necessary. If corrosion is found, check the condition of the connector seal and repair or replace as necessary. If DTC P0121 is intermittent, refer to Symptoms .
Excessive throttle cable or cruise control cable tension could result in this DTC.
An intermittent may be caused by any of the following conditions:
A poor connection
Rubbed through wire insulation
A broken wire inside the insulation
Thoroughly check any circuitry that is suspected of causing the intermittent complaint. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.
If a repair is necessary, refer to Wiring Repairs or Connector Repairs in Wiring Systems.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
The TP sensor has an auto zeroing feature. If the voltage reading is within the range of about 0.2-0.9 volt, the VCM uses that value as a closed throttle. If the reading is out of the auto zero range at the closed throttle, check for a binding throttle shaft or a damaged linkage. If the throttle shaft and the linkage are okay, continue with the diagnosis.
The TP sensor throttle angle should range smoothly from 0-100 percent when the throttle is slowly depressed to the wide open throttle (WOT) position. If not, a skewed out of range TP sensor, low reference voltage or a poor connection could be possible causes.
With the TP sensor disconnected, the TP sensor signal voltage should go low if the VCM and the wiring are okay and a DTC P0122 may set.
Reference voltage less than 4.5 volts could cause a poor TP performance condition. Be sure to check both 5 volt reference circuits for conditions that could cause low voltage on the TP sensor circuit.
The throttle shaft, throttle linkage or accelerator cable not closing due to sticking or binding could cause a TP sensor poor performance condition.
Step
Action
Value(s)
Yes
No
1
Important
Before clearing the DTCs, use the scan tool Capture Info to save the Freeze Frame and Failure Records for reference. The control module's data is deleted once the Clear Info function is used.
Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?
--
Go to Step 2
Go to Powertrain On Board Diagnostic (OBD) System Check
2
Install the scan tool.
Turn ON the ignition leaving the engine OFF.
Does the scan tool display the throttle angle more than the specified value?
2%
Go to Step 6
Go to Step 3
3
Important
The engine must remain OFF for this step.
Depress the throttle slowly to wide open throttle (WOT) while watching the throttle angle increase through the specified range.
Does the TP sensor range reach the maximum specified value?
0-100%
Go to Step 4
Go to Step 10
4
Release the throttle.
Does the scan tool display the throttle angle more than the specified value?
2%
Go to Step 6
Go to Step 5
5
The DTC is intermittent.
Are any additional DTCs set?
--
Go to the applicable DTC table
Go to Diagnostic Aids
6
Disconnect the TP sensor harness connector.
Does the scan tool display the TP sensor at the specified value?
0 V
Go to Step 7
Go to Step 9
7
Turn OFF the ignition.
Probe the TP sensor ground circuit with a test lamp connected to B+.
Is the test lamp ON?
--
Go to Step 8
Go to Step 14
8
Turn ON the ignition leaving the engine OFF.
Probe the TP sensor 5 volt reference circuit at the TP sensor harness connector with a J 39200 DMM connected to a ground.
Is the voltage more than the specified value?
5.2 V
Go to Step 15
Go to Step 19
9
Turn OFF the ignition.
Disconnect the VCM C2 connector.
Turn ON the ignition leaving the engine OFF.
Probe the TP sensor signal circuit at the TP sensor harness connector with a J 39200 DMM connected to a ground.
Is the voltage more than the specified value?
0 V
Go to Step 13
Go to Step 22
10
Turn OFF the ignition.
Disconnect the TP sensor harness connector.
Jumper the TP sensor 5 volt reference circuit to the TP sensor signal circuit at the TP sensor harness connector.
Turn ON the ignition leaving the engine OFF.
Does the scan tool display the throttle angle at the specified value?
100%
Go to Step 17
Go to Step 11
11
Turn ON the ignition leaving the engine OFF
Probe the TP sensor 5 volt reference circuit with a J 39200 DMM connected to a ground.
Is the voltage near the specified value?
5.2 V
Go to Step 12
Go to Step 16
12
Turn OFF the ignition.
Disconnect the VCM C2 connector.
Check the resistance in the TP sensor signal circuit between the TP sensor harness connector and the VCM connector with a J 39200 DMM.
Is the resistance near the specified value?
0ohms
Go to Step 22
Go to Step 18
13
Repair the short to voltage on the TP sensor signal circuit. Refer to Wiring Repairs in Wiring Systems.
Is the action complete?
--
Go to Step 24
--
14
Repair the open in the TP sensor ground circuit. Refer to Wiring Repairs in Wiring Systems.
Is the action complete?
--
Go to Step 24
--
15
Repair the short to voltage in the 5 volt reference circuit. Refer to Wiring Repairs in Wiring Systems.
Is the action complete?
--
Go to Step 24
--
16
Repair the low voltage condition on the 5 volt reference circuit. Refer to Wiring Repairs in Wiring Systems.
Is the action complete?
--
Go to Step 24
--
17
Check for a poor connection at the TP sensor.
Did you find a problem?
--
Go to Step 18
Go to Step 19
18
Repair the circuit as necessary. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.
Is the action complete?
--
Go to Step 24
--
19
Check the throttle shaft, linkage, throttle and cruise cables for the following conditions:
Binding
Sticking
Did you find a problem?
--
Go to Step 20
Go to Step 21
20
Repair the throttle shaft, linkage, or cables as necessary.
Is the action complete?
--
Go to Step 24
--
21
Replace the TP sensor. Refer to Throttle Position (TP) Sensor Replacement .
Is the action complete?
--
Go to Step 24
--
22
Check for a poor connection at the VCM.
Repair as necessary. Refer to Connector Repairs in Wiring Systems.
Did you find a problem?
--
Go to Step 24
Go to Step 23
23
Replace the VCM.
Program the new VCM. Refer to VCM Replacement/Programming .
Perform the Passlock Reprogramming Procedure.
Perform the CKP System Variation Learn Procedure. Refer to CKP System Variation Learn Procedure .
Is the action complete?
--
Go to Step 24
--
24
Using the scan tool, clear the DTCs.
Start the engine.
Allow the engine to idle until the engine reaches normal operating temperature.
Select DTC and the Specific DTC function.
Enter the DTC number which was set.
Operate the vehicle, with the Conditions for Setting this DTC, until the scan tool indicates the diagnostic Ran.
Does the scan tool indicate the diagnostic Passed?
--
Go to Step 25
Go to Step 2
25
Does the scan tool display any additional undiagnosed DTCs?
--
Go to the applicable DTC table
System OK
