Test sequence

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2006 Volkswagen Golf, 2005 Volkswagen Jetta, 2005 Volkswagen Golf, 2004 Volkswagen Jetta, and 2004 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.

Switch off ignition.
Disconnect connector for engine speed sensor. Fitting location overview.

Fig 1: 3-Pin Connector & Terminals

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Measure resistance between connector contacts 1+2.

Specification: 1.1 to 1.6 kΩ

If the specification is not obtained:

Replace engine speed sensor G28. Fitting location overview.
Check DTC memory and, if necessary, repair any malfunctions and then erase → Diagnostic Trouble Code (DTC) memory, checking and erasing .
If the DTC memory has been erased, the readiness code must be generated again → Readiness code, setting .

If the specification is obtained:

Remove wiper arms and plenum cover: → 92 WINDSHIELD WIPER & WASHER SYSTEM

Fig 2: Identifying Test Box V.A.G 1598/31 Connected To Control Module Wiring Harness

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Connect test box VAG1598/31 to control unit wiring harness.

Fig 3: Identifying 3-Pin Connector Terminals 1 & 3

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Check wiring between test box and 3-pin connector for open circuit according to wiring diagram.

Terminal 1+ socket 102

Terminal 2+ socket 110

Terminal 3+ socket 86

Wire resistance: max. 1.5 Ω

Check wiring 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 Diesel Direct Fuel Injection Engine Control Module J248 → Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) J248 , replacing .