Check wires to control module
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen R32, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, and 2003 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
- Connect test box to control module wiring harness. Refer to Test box, connecting for wiring test
Vehicles with engine code AFP
- Check wire between test box socket 44 + 2-pin connector terminal 2 for open circuit according to wiring diagram.
Wire resistance: max. 1.5 Ω
Vehicles with engine codes BDF and BJS
- Check wire between test box socket 44 + 2-pin connector terminal 2 for open circuit according to wiring diagram.
Wire resistance: max. 1.5 Ω
Continuation for all vehicles
- Also check the wire for short circuit to B+ and Ground (GND).
Specified value: ∞ Ω
- Check wire between 2-pin connector terminal 1 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wire resistance: max. 1.5 Ω
- Erase DTC memory of Engine Control Module (ECM). Refer to Diagnostic mode 4: Reset/erase diagnostic data
- Generate readiness code. Refer to Readiness code, generating
If no malfunctions are found in wires:
- Replace Motronic Engine Control Module (ECM) -J220-. Refer to Engine Control Module (ECM), replacing .