Work sequence
WARNING: This page is about a different variant/trim than selected.
- Connect V.A.G 1551/1552 (Connecting scan tool and selecting engine electronics control module → 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 - 6 - to select "Display group number 6" and confirm entry with - Q - button.
- Observe display in display field 2.
| Read measured value block 6 -> 0 km/h 0 0 0 000000 255 |
- Specification: 0 x x
- Operate clutch pedal. The left-hand position must change to 1.
| Read measured value block 6 -> 0 km/h 1 0 0 000000 255 |
- Specification: 1 x x
- Press → button.
- Press buttons - 0 - and - 6 - to select "End output" function 06 and confirm entry with - Q - button.
- Switch ignition off.
If specifications are not obtained:
- Disconnect 2-pin connector from clutch pedal switch.
- Measure resistance at switch terminals.
- Specification: Clutch not depressed: max. 10 Ω; Clutch depressed: ∞ Ω
If specifications are not obtained:
- Replace clutch pedal switch.
- Check DTC memory and, if necessary, repair any malfunctions and then erase → Diagnostic Trouble Code (DTC) memory, checking and erasing .
- Read readiness code → Readiness code, displaying .
If DTC memory has been erased, the readiness code must be generated again → Readiness code, setting .
If specifications are obtained:
- Remove wiper arms and plenum cover. →92 WINDSHIELD WIPER & WASHER SYSTEM
- Connect test box V.A.G 1598/22 (through my 1999) or test box V.A.G 1598/31 (from my 2000) to control module wiring harness.
- Check wiring between test box and connector for open circuit according to wiring diagram.
| Test box socket no. | ||
| Terminal | Through MY 1999 | From MY 2000 |
| 1 | 2 | 1 |
| 1 | 28 | 2 |
| 2 | 46 | 66 |
- Wire resistance: max. 1.5 Ω
- Additionally check wires for short to one another, to vehicle Ground and to battery positive (B+).
- Specification: ∞ Ω
- If wiring and the resistance measurement values are OK, replace engine control module → Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) J248 , replacing .