Test sequence

• Disconnect 2-pin connector from Exhaust Gas Recirculation (EGR) Cooler Switch-over Valve -N345-, Overview of component locations. Refer to item 4 in Component Locations, overview (vehicles with engine code BEW)  .
• Measure resistance between sensor terminals 1 + 2:

Specified value: 14 to 40 Ω

If specified value is not obtained:

• Replace Exhaust Gas Recirculation (EGR) Cooler Switch-over Valve -N345-. Refer to item 4 in Component Locations, overview (vehicles with engine code BEW)  , overview of component locations.
• Erase DTC memory of control module for Diesel-Direct fuel injection system. Refer to Diagnostic mode 4: Reset/erase diagnostic data  .
• Generate readiness code.

If specified value is obtained:

• Connect test box to control module wiring harness. Refer to Test box, connecting for wiring test  .
• Connect adapter cable (V.A.G 1598/39-2) to test box (V.A.G 1598/42).

Fig 1: 2-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 1 + chassis Ground (GND)

Terminal 2+socket 15

Wire resistance: max. 1.5 Ω

• Check wires for short circuit to B+ or Ground (GND).

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  .
• Generate readiness code.