Work sequence
WARNING: This page is about a different variant/trim than selected.
- Connect Scan tool VAG 1551 or system tester VAG 1552 and select control module for engine electronics using "address word" "01". Ignition must be on. Refer to 01 ON BOARD DIAGNOSTIC (OBD)
Indicated on display:
| Rapid Data Transfer HELP Select function XX |
- Press keys "0" and "8" for function "Read Measuring Value Block" and acknowledge entry by pressing "Q."
Indicated on display:
| Read Measuring Value Block HELP Enter Display Group No. XXX |
- Press keys "0" , "6" and "2" for "display group number 62" and acknowledge entry by pressing "Q".
Indicated on display (1-4 = display fields)
| Read Measuring Value Block 62 -> 1 2 3 4 |
- Check specification of Throttle Position (TP) Sensor G79 from message in field 3, while engine is idling.
Specification: 12 - 97 %
- Check specification of Accelerator Pedal Position Sensor 2 G185 in field 4, while engine is idling.
Specification: 4 - 49 %
NOTE:
- The engine control module converts the voltage of the angle transmitter in percent, based on 5 volts, and displays it (5 volts represents 100 %).
- Slowly actuate accelerator to wide open throttle and simultaneously observe percentages displayed in fields 3 and 4:
- The percentage in field 3 should increase steadily. Here, the range of tolerances 12 - 97 % is not totally utilized.
- The percentage in field 4 should increase steadily. Here, the range of tolerances 4 - 49 % is not totally utilized.
NOTE:
- The value displayed in field 3 should always be about twice as large as the value in field 4.
If the displays do not behave as described:
- Check voltage supply and electrical connections of throttle position sensors.