Work sequence
WARNING: This page is about a different variant/trim than selected.
- Separate gray 3-pin connector - arrow - to engine speed sensor.
- Measure resistance between connector terminals 1 + 2.
- Specification: 1.0 to 1.5 kΩ
If specification is not obtained:
- Replace engine speed sensor G28.
- Check DTC memory and, if necessary, repair any malfunctions and then erase DTC memory → 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 specification is 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 3 pin connector for open circuit according to wiring diagram.
| Test box socket no. | ||
| Terminal | Through MY 1999 | From MY 2000 |
| 1 | 69 | 102 |
| 2 | 67 | 110 |
| 3 | 71 | 86 |
- Wire resistance: max. 1.5 Ω
- Check wires at 3 pin connector for short circuit to one another according to wiring diagram.
- Specification: ∞ Ω
If no wiring malfunction is detected:
- Remove sensor and check sensor wheel for secure fit, damage and run-out.
If no malfunction is detected:
- Replace engine control module → Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) J248 , replacing .