Test sequence
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, 2003 Volkswagen Jetta, and 2003 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
- Connect Scan Tool VAG 1551 or Vehicle system tester VAG1552/ and select engine electronics control module with the "Address word" 01. Ignition must be switched on when doing this: → 01 ON BOARD DIAGNOSTIC (OBD)
Indicated on display
| Rapid data transfer HELP Select function XX |
- Press keys "0" and "8" for function "Read measured value (data) block" and confirm entry with "Q" key.
Indicated on display
| Read measured value block Input display group number XXX |
- Press keys "0" , "6" and "2" for "Display group number 62" and confirm entry with "Q" key.
Indicated on display: (1...4 = display zones)
| Read measured value block 62 -> 1 2 3 4 |
- Check specifications of TP sensor G79 at idling speed limit stop in display zone 3. Specification: 12...17%
- Check specifications of Sender - 2 - for Accelerator Pedal Position Sensor 2 G185 at idling speed limit stop in display zone 4. Specification: 4...10%
NOTE:
- The engine control module calculates the angle sender voltage value as a percent of 5 Volts and displays this percentage. (5 volt supply voltage equals 100%).
- Depress accelerator pedal slowly until fully depressed and observe percentage figures in display zones 3 and 4: Percentage display in display zone 3 must increase evenly. Tolerance range 12...97% is not fully exploited. Percentage display in display zone 4 must increase evenly. Tolerance range 4...49% is not fully exploited.
NOTE:
- The figure displayed in display zone 3 must always be approximately double the value displayed in display zone 4.
- Press → key.
- Press keys "0" and "6" for function "End output" and confirm entry with "Q" key.
- Switch ignition off.
If the displays do not indicate as described:
- Check Throttle Position (TP) sensor G79 and Sender -2- for accelerator pedal position G185 voltage supply and wiring connections.