Work sequence
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2001 Volkswagen Jetta, 2001 Volkswagen Golf, 2000 Volkswagen Jetta, 2000 Volkswagen Golf, and 1999 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
- Connect V.A.G 1551/1552 → Scan Tool V.A.G 1551 , connecting .
- Run engine at idle speed and press buttons - 0 - and - 1 - to select "Engine electronics" address word 01.
Indicated on display
| Rapid data transfer HELP Select function XX |
- Press buttons - 0 - and - 8 - to select "Read measured value block" function 08 and confirm entry with - Q - button.
Indicated on display
| Read measured value block HELP Input display group number XXX |
- Press buttons - 0 - , - 0 - and - 1 - to select "Display group number 1" and confirm entry with - Q - button.
Indicated on display
| Read measured value block 1 -> 840 rpm 6.5 mg/H 1.480 V 87.3 ° C |
- Check coolant temperature in display field 4
- Specification: at least 85 ° C
Continue with check only when coolant temperature is attained.
- Check voltage supply from modulating piston displacement sensor in display field 3.
| Read measured value block 1 -> 840 rpm 6.5 mg/H 1.480 V 87.3 ° C |
- Specification: 1.450 to 2.000 Volts
- Press → button.
- Press buttons - 0 - and - 6 - to select "End output" function 06 and confirm entry with - Q - button.
- Switch ignition off.
If specification is not obtained, check Modulating piston displacement sensor G149 and quantity adjuster as described in following steps: