Check wires to control module

• Connect test box to control module wiring harness. Refer to Test box, connecting for wiring test  .
• Connect adapter cable (V.A.G 1598/39-1) to test box (V.A.G 1598/42).

Fig 1: 7-Pin Connector & Terminals

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Check for open circuits in wires between test box and connector according to wiring diagram.

Terminal 2 + socket 47

Terminal 3 + socket 1

Terminal 5 + socket 46

Terminal 6 + socket 48

Terminal 7 + socket 31

Wire resistance: max. 1.5 Ω

• Check wires for short circuit to each other, to vehicle Ground (GND) and to B+.

Specified value: ∞ Ω

If no malfunctions are found in wires:

• Replace Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-. Refer to Control module for Diesel-Direct Fuel Injection System, replacing  .
• Erase DTC memory of control module for Diesel-Direct fuel injection system. Refer to Diagnostic mode 4: Reset/erase diagnostic data  .
• Generate readiness code.