411 Throttle Jacking Unit, Gain Adjustment - Signal Implausible

P1507

411 Throttle Jacking Unit, Gain Adjustment - Signal Implausible

Function
The actual values of the throttle position are read in via a 10-bit analog-to-digital converter. In order to achieve a higher resolution of the throttle angle in the idle speed range, an analog circuit amplifies the voltage of potentiometer 1. The throttle angle is then calculated as a function of the amplified signal.

Diagnosis conditions
- Ignition on (approx. 30 sec.)
- Stationary vehicle
- Engine not running
- Engine temperature between 5 and 100 °C
- Intake air temperature between 5 and 100 °C
- Battery voltage > 10 V
- Accelerator value < 0.8 %

P1507:

Wiring Diagram







Diagnosis Procedure







1 Perform adaptation.
1. Switch on the ignition.
2. Wait one minute. Do not press the accelerator.
3. Switch off the ignition for at least 10 seconds.
4. Read out the fault memory.